L7824CD2T中文资料

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L7815CD2T中文资料

L7800SERIESPOSITIVE VOLTAGE REGULATORSJanuary 1997s OUTPUT CURRENT UP TO 1.5AsOUTPUT VOLTAGES OF 5;5.2;6;8;8.5;9;12;15;18;24Vs THERMAL OVERLOAD PROTECTION s SHORT CIRCUIT PROTECTIONsOUTPUT TRANSITION SOA PROTECTIONDESCRIPTIONThe L7800series of three-terminal positive regulators is available in TO-220ISOWATT220TO-3and D 2PAK packages and several fixed output voltages,making it useful in a wide range of applications.These regulators can provide local on-card regulation,eliminating the distribution problems associated with single point regulation.Each type employs internal current limiting,thermal shut-down and safe area protection,making it essentially indestructible.If adequate heat sinking is provided,they can deliver over 1A output current.Although designed primarily as fixed voltage regulators,these devices can be used with external components to obtain adjustable voltages and currents.12TO-3123TO-220ISOWATT22012313D 2PAKBLOCK DIAGRAM1/25CONNECTION DIAGRAM AND ORDERING NUMBERS (top view)TO-220&ISOWATT220TO-3D 2PAKTHERMAL DATASymbolParameterD 2PAK TO-220ISOWATT220TO-3UnitR t hj-case R th j-a mb Thermal Resistance Junction-case Max Thermal Resistance Junction-ambient Max 362.5350460435o C/W oC/WType TO-220D 2PAK (*)ISOWATT220TO-3Output VoltageL7805L7805C L7852C L7806L7806C L7808L7808C L7885C L7809C L7812L7812C L7815L7815C L7818L7818C L7820L7820C L7824L7824CL7805CV L7852CV L7806CV L7808CV L7885CV L7809CV L7812CV L7815CV L7818CV L7820CV L7824CVL7805CD2T L7852CD2T L7806CD2T L7808CD2T L7885CD2T L7809CD2T L7812CD2T L7815CD2T L7818CD2T L7820CD2T L7824CD2TL7805CP L7852CP L7806CP L7808CP L7885CP L7809CP L7812CP L7815CP L7818CP L7820CP L7824CPL7805T L7805CT L7852CT L7806T L7806CT L7808T L7808CT L7885CT L7809CT L7812T L7812CT L7815T L7815CT L7818T L7818CT L7820T L7820CT L7824T L7824CT5V 5V 5.2V 6V 6V 8V 8V 8.5V 9V 12V 12V 15V 15V 18V 18V 20V 20V 24V 24V(*)AVAILABLE IN TAPE AND REEL WITH ”-TR”SUFFIXABSOLUTE MAXIMUM RATINGSSymbol ParameterValue Unit V i DC Input Voltage (for V O =5to 18V)(for V O =20,24V)3540V VI o Output Current Internally limited P t ot Power DissipationInternally limited T o p Operating Junction Temperature Range (for L7800)(for L7800C )-55to 1250to 150o C o C T stgStorage Temperature Range-40to 150oCL78002/25L7800 APPLICATION CIRCUITSCHEMATIC DIAGRAM3/25TEST CIRCUITSFigure3:Ripple Rejection.Figure2:Load Regulation.Figure1:DC Parameter L78004/25ELECTRICAL CHARACTERISTICS FOR L7806(refer to the test circuits,T j =-55to 150o C,V i =15V,I o =500mA,C i =0.33µF,C o =0.1µF unless otherwise specified)Symbol ParameterTest Conditions Min.Typ.Max.Unit V o Output Voltage T j =25oC 5.756 6.25V V o Output Voltage I o =5mA to 1A P o ≤15WV i =9to 21V 5.6566.35V ∆V o *Line Regulation V i =8to 25V T j =25oCV i =9to 13VT j =25oC6030mV mV ∆V o *Load Regulation I o =5to 1500mA T j =25o CI o =250to 750mA T j =25oC10030mV mV I d Quiescent Current T j =25o C 6mA ∆I d Quiescent Current Change I o =5to 1000mA 0.5mA ∆I d Quiescent Current Change V i =9to 25V 0.8mA ∆V o ∆T Output Voltage Drift I o =5mA0.7mV/oCeN Output Noise Voltage B =10Hz to 100KHz T j =25oC 40µV/V O SVR Supply Voltage Rejection V i =9to 19V f =120Hz65dB V d Dropout Voltage I o =1A T j =25o C2 2.5V R o Output Resistance f =1KHz 19m ΩI sc Short Circuit Current V i =35V T j =25oC0.75 1.2A I s cpShort Circuit Peak CurrentT j =25o C1.32.23.3AELECTRICAL CHARACTERISTICS FOR L7805(refer to the test circuits,T j =-55to 150o C,V i =10V,I o =500mA,C i =0.33µF,C o =0.1µF unless otherwise specified)Symbol ParameterTest Conditions Min.Typ.Max.Unit V o Output Voltage T j =25oC 4.85 5.2V V o Output Voltage I o =5mA to 1A P o ≤15WV i =8to 20V 4.655 5.35V ∆V o *Line Regulation V i =7to 25V T j =25o CV i =8to 12VT j =25oC315025mV mV ∆V o *Load Regulation I o =5to 1500mA T j =25oCI o =250to 750mA T j =25oC10025mV mV I d Quiescent Current T j =25o C 6mA ∆I d Quiescent Current Change I o =5to 1000mA 0.5mA ∆I d Quiescent Current Change V i =8to 25V 0.8mA ∆V o ∆T Output Voltage Drift I o =5mA0.6mV/oCeN Output Noise Voltage B =10Hz to 100KHz T j =25o C 40µV/V O SVR Supply Voltage Rejection V i =8to 18V f =120Hz68dB V d Dropout Voltage I o =1A T j =25oC 2 2.5V R o Output Resistance f =1KHz 17m ΩI sc Short Circuit Current V i =35V T j =25oC0.75 1.2A I s cpShort Circuit Peak CurrentT j =25oC1.32.23.3A*Load and line regulation are specified at constant junction temperature.Changes in V o due to heating effects must be taken into account separately.Pulce testing with low duty cycle is used.L78005/25ELECTRICAL CHARACTERISTICS FOR L7812(refer to the test circuits,T j =-55to 150o C,V i =19V,I o =500mA,C i =0.33µF,C o =0.1µF unless otherwise specified)Symbol ParameterTest Conditions Min.Typ.Max.Unit V o Output Voltage T j =25oC11.51212.5V V o Output Voltage I o =5mA to 1A P o ≤15W V i =15.5to 27V11.41212.6V ∆V o *Line Regulation V i =14.5to 30V T j =25oCV i =16to 22V T j =25oC 12060mV mV ∆V o *Load Regulation I o =5to 1500mA T j =25o CI o =250to 750mA T j =25oC10060mV mV I d Quiescent Current T j =25o C 6mA ∆I d Quiescent Current Change I o =5to 1000mA 0.5mA ∆I d Quiescent Current Change V i =15to 30V 0.8mA ∆V o ∆T Output Voltage Drift I o =5mA1.5mV/oCeN Output Noise Voltage B =10Hz to 100KHz T j =25o C 40µV/V O SVR Supply Voltage Rejection V i =15to 25V f =120Hz61dB V d Dropout Voltage I o =1A T j =25o C2 2.5V R o Output Resistance f =1KHz 18m ΩI sc Short Circuit Current V i =35V T j =25oC0.75 1.2A I s cpShort Circuit Peak CurrentT j =25o C1.32.23.3AELECTRICAL CHARACTERISTICS FOR L7808(refer to the test circuits,T j =-55to 150o C,V i =14V,I o =500mA,C i =0.33µF,C o =0.1µF unless otherwise specified)Symbol ParameterTest Conditions Min.Typ.Max.Unit V o Output Voltage T j =25oC7.788.3V V o Output Voltage I o =5mA to 1A P o ≤15W V i =11.5to 23V7.688.4V ∆V o *Line Regulation V i =10.5to 25V T j =25o CV i =11to 17V T j =25oC 8040mV mV ∆V o *Load Regulation I o =5to 1500mA T j =25oCI o =250to 750mA T j =25oC10040mV mV I d Quiescent Current T j =25o C 6mA ∆I d Quiescent Current Change I o =5to 1000mA 0.5mA ∆I d Quiescent Current Change V i =11.5to 25V 0.8mA ∆V o ∆T Output Voltage Drift I o =5mA1mV/oCeN Output Noise Voltage B =10Hz to 100KHz T j =25o C 40µV/V O SVR Supply Voltage Rejection V i =11.5to 21.5V f =120Hz62dB V d Dropout Voltage I o =1A T j =25oC 2 2.5V R o Output Resistance f =1KHz 16m ΩI sc Short Circuit Current V i =35V T j =25oC0.75 1.2A I s cpShort Circuit Peak CurrentT j =25oC1.32.23.3A*Load and line regulation are specified at constant junction temperature.Changes in V o due to heating effects must be taken into account separately.Pulce testing with low duty cycle is used.L78006/25ELECTRICAL CHARACTERISTICS FOR L7818(refer to the test circuits,T j =-55to 150o C,V i =26V,I o =500mA,C i =0.33µF,C o =0.1µF unless otherwise specified)Symbol ParameterTest Conditions Min.Typ.Max.Unit V o Output Voltage T j =25oC 17.31818.7V V o Output Voltage I o =5mA to 1A P o ≤15W V i =22to 33V 17.11818.9V ∆V o *Line Regulation V i =21to 33V T j =25oCV i =24to 30VT j =25oC18090mV mV ∆V o *Load Regulation I o =5to 1500mA T j =25o CI o =250to 750mA T j =25oC18090mV mV I d Quiescent Current T j =25o C 6mA ∆I d Quiescent Current Change I o =5to 1000mA 0.5mA ∆I d Quiescent Current Change V i =22to 33V 0.8mA ∆V o ∆T Output Voltage Drift I o =5mA2.3mV/oCeN Output Noise Voltage B =10Hz to 100KHz T j =25oC 40µV/V O SVR Supply Voltage Rejection V i =22to 32V f =120Hz59dB V d Dropout Voltage I o =1A T j =25o C2 2.5V R o Output Resistance f =1KHz 22m ΩI sc Short Circuit Current V i =35V T j =25oC0.75 1.2A I s cpShort Circuit Peak CurrentT j =25o C1.32.23.3AELECTRICAL CHARACTERISTICS FOR L7815(refer to the test circuits,T j =-55to 150o C,V i =23V,I o =500mA,C i =0.33µF,C o =0.1µF unless otherwise specified)Symbol ParameterTest Conditions Min.Typ.Max.Unit V o Output Voltage T j =25oC14.41515.6V V o Output Voltage I o =5mA to 1A P o ≤15W V i =18.5to 30V14.251515.75V ∆V o *Line Regulation V i =17.5to 30V T j =25o CV i =20to 26V T j =25oC 15075mV mV ∆V o *Load Regulation I o =5to 1500mA T j =25oCI o =250to 750mA T j =25oC15075mV mV I d Quiescent Current T j =25o C 6mA ∆I d Quiescent Current Change I o =5to 1000mA 0.5mA ∆I d Quiescent Current Change V i =18.5to 30V 0.8mA ∆V o ∆T Output Voltage Drift I o =5mA1.8mV/oCeN Output Noise Voltage B =10Hz to 100KHz T j =25o C 40µV/V O SVR Supply Voltage Rejection V i =18.5to 28.5V f =120Hz60dB V d Dropout Voltage I o =1A T j =25oC 2 2.5V R o Output Resistance f =1KHz 19m ΩI sc Short Circuit Current V i =35V T j =25oC0.75 1.2A I s cpShort Circuit Peak CurrentT j =25oC1.32.23.3A*Load and line regulation are specified at constant junction temperature.Changes in V o due to heating effects must be taken into account separately.Pulce testing with low duty cycle is used.L78007/25ELECTRICAL CHARACTERISTICS FOR L7824(refer to the test circuits,T j =-55to 150o C,V i =33V,I o =500mA,C i =0.33µF,C o =0.1µF unless otherwise specified)Symbol ParameterTest Conditions Min.Typ.Max.Unit V o Output Voltage T j =25oC 232425V V o Output Voltage I o =5mA to 1A P o ≤15W V i =28to 38V 22.82425.2V ∆V o *Line Regulation V i =27to 38V T j =25oCV i =30to 36VT j =25oC240120mV mV ∆V o *Load Regulation I o =5to 1500mA T j =25o CI o =250to 750mA T j =25oC240120mV mV I d Quiescent Current T j =25o C 6mA ∆I d Quiescent Current Change I o =5to 1000mA 0.5mA ∆I d Quiescent Current Change V i =28to 38V 0.8mA ∆V o ∆T Output Voltage Drift I o =5mA3mV/oCeN Output Noise Voltage B =10Hz to 100KHz T j =25oC 40µV/V O SVR Supply Voltage Rejection V i =28to 38V f =120Hz56dB V d Dropout Voltage I o =1A T j =25o C2 2.5V R o Output Resistance f =1KHz 28m ΩI sc Short Circuit Current V i =35V T j =25oC0.75 1.2A I s cpShort Circuit Peak CurrentT j =25o C1.32.23.3AELECTRICAL CHARACTERISTICS FOR L7820(refer to the test circuits,T j =-55to 150o C,V i =28V,I o =500mA,C i =0.33µF,C o =0.1µF unless otherwise specified)Symbol ParameterTest Conditions Min.Typ.Max.Unit V o Output Voltage T j =25oC 19.22020.8V V o Output Voltage I o =5mA to 1A P o ≤15WV i =24to 35V192021V ∆V o *Line Regulation V i =22.5to 35V T j =25o CV i =26to 32V T j =25oC 200100mV mV ∆V o *Load Regulation I o =5to 1500mA T j =25oCI o =250to 750mA T j =25oC200100mV mV I d Quiescent Current T j =25o C 6mA ∆I d Quiescent Current Change I o =5to 1000mA 0.5mA ∆I d Quiescent Current Change V i =24to 35V 0.8mA ∆V o ∆T Output Voltage Drift I o =5mA2.5mV/oCeN Output Noise Voltage B =10Hz to 100KHz T j =25o C 40µV/V O SVR Supply Voltage Rejection V i =24to 35V f =120Hz58dB V d Dropout Voltage I o =1A T j =25oC 2 2.5V R o Output Resistance f =1KHz 24m ΩI sc Short Circuit Current V i =35V T j =25oC0.75 1.2A I s cpShort Circuit Peak CurrentT j =25oC1.32.23.3A*Load and line regulation are specified at constant junction temperature.Changes in V o due to heating effects must be taken into account separately.Pulce testing with low duty cycle is used.L78008/25ELECTRICAL CHARACTERISTICS FOR L7852C (refer to the test circuits,T j =0to 125o C,V i =10V,I o =500mA,C i =0.33µF,C o =0.1µF unless otherwise specified)Symbol ParameterTest Conditions Min.Typ.Max.Unit V o Output Voltage T j =25oC 5.0 5.2 5.4V V o Output Voltage I o =5mA to 1A P o ≤15WV i =8to 20V 4.955.2 5.45V ∆V o *Line Regulation V i =7to 25V T j =25oCV i =8to 12VT j =25oC3110552mV mV ∆V o *Load Regulation I o =5to 1500mA T j =25o CI o =250to 750mA T j =25oC10552mV mV I d Quiescent Current T j =25o C 8mA ∆I d Quiescent Current Change I o =5to 1000mA 0.5mA ∆I d Quiescent Current Change V i =7to 25V 1.3mA ∆V o ∆T Output Voltage Drift I o =5mA-1.0mV/oC eN Output Noise Voltage B =10Hz to 100KHz T j =25oC 42µV SVR Supply Voltage Rejection V i =8to 18V f =120Hz61dB V d Dropout Voltage I o =1A T j =25o C2V R o Output Resistance f =1KHz 17m ΩI sc Short Circuit Current V i =35V T j =25oC750mA I s cpShort Circuit Peak CurrentT j =25o C2.2AELECTRICAL CHARACTERISTICS FOR L7805C (refer to the test circuits,T j =0to 125o C,V i =10V,I o =500mA,C i =0.33µF,C o =0.1µF unless otherwise specified)Symbol ParameterTest Conditions Min.Typ.Max.Unit V o Output Voltage T j =25oC 4.85 5.2V V o Output Voltage I o =5mA to 1A P o ≤15WV i =7to 20V 4.755 5.25V ∆V o *Line Regulation V i =7to 25V T j =25o CV i =8to 12VT j =25oC3110050mV mV ∆V o *Load Regulation I o =5to 1500mA T j =25oCI o =250to 750mA T j =25oC10050mV mV I d Quiescent Current T j =25o C 8mA ∆I d Quiescent Current Change I o =5to 1000mA 0.5mA ∆I d Quiescent Current Change V i =7to 25V 0.8mA ∆V o ∆T Output Voltage Drift I o =5mA-1.1mV/oC eN Output Noise Voltage B =10Hz to 100KHz T j =25o C 40µV SVR Supply Voltage Rejection V i =8to 18V f =120Hz62dB V d Dropout Voltage I o =1A T j =25oC2V R o Output Resistance f =1KHz 17m ΩI sc Short Circuit Current V i =35V T j =25oC750mA I s cpShort Circuit Peak CurrentT j =25oC2.2A*Load and line regulation are specified at constant junction temperature.Changes in V o due to heating effects must be taken into account separately.Pulce testing with low duty cycle is used.L78009/25ELECTRICAL CHARACTERISTICS FOR L7808C (refer to the test circuits,T j =0to 125o C,V i =14V,I o =500mA,C i =0.33µF,C o =0.1µF unless otherwise specified)Symbol ParameterTest Conditions Min.Typ.Max.Unit V o Output Voltage T j =25oC7.788.3V V o Output Voltage I o =5mA to 1A P o ≤15W V i =10.5to 25V7.688.4V ∆V o *Line Regulation V i =10.5to 25V T j =25oCV i =11to 17V T j =25oC 16080mV mV ∆V o *Load Regulation I o =5to 1500mA T j =25o CI o =250to 750mA T j =25oC16080mV mV I d Quiescent Current T j =25o C 8mA ∆I d Quiescent Current Change I o =5to 1000mA 0.5mA ∆I d Quiescent Current Change V i =10.5to 25V 1mA ∆V o ∆T Output Voltage Drift I o =5mA-0.8mV/oC eN Output Noise Voltage B =10Hz to 100KHz T j =25o C 52µV SVR Supply Voltage Rejection V i =11.5to 21.5V f =120Hz56dB V d Dropout Voltage I o =1A T j =25o C2V R o Output Resistance f =1KHz 16m ΩI sc Short Circuit Current V i =35V T j =25oC450mA I s cpShort Circuit Peak CurrentT j =25o C2.2AELECTRICAL CHARACTERISTICS FOR L7806C (refer to the test circuits,T j =0to 125o C,V i =11V,I o =500mA,C i =0.33µF,C o =0.1µF unless otherwise specified)Symbol ParameterTest Conditions Min.Typ.Max.Unit V o Output Voltage T j =25oC 5.756 6.25V V o Output Voltage I o =5mA to 1A P o ≤15WV i =8to 21V 5.766.3V ∆V o *Line Regulation V i =8to 25V T j =25o CV i =9to 13VT j =25oC12060mV mV ∆V o *Load Regulation I o =5to 1500mA T j =25oCI o =250to 750mA T j =25oC12060mV mV I d Quiescent Current T j =25o C 8mA ∆I d Quiescent Current Change I o =5to 1000mA 0.5mA ∆I d Quiescent Current Change V i =8to 25V 1.3mA ∆V o ∆T Output Voltage Drift I o =5mA-0.8mV/oC eN Output Noise Voltage B =10Hz to 100KHz T j =25o C 45µV SVR Supply Voltage Rejection V i =9to 19V f =120Hz59dB V d Dropout Voltage I o =1A T j =25oC 2V R o Output Resistance f =1KHz 19m ΩI sc Short Circuit Current V i =35V T j =25oC550mA I s cpShort Circuit Peak CurrentT j =25oC2.2A*Load and line regulation are specified at constant junction temperature.Changes in V o due to heating effects must be taken into account separately.Pulce testing with low duty cycle is used.L780010/25ELECTRICAL CHARACTERISTICS FOR L7809C (refer to the test circuits,T j =0to 125o C,V i =15V,I o =500mA,C i =0.33µF,C o =0.1µF unless otherwise specified)Symbol ParameterTest Conditions Min.Typ.Max.Unit V o Output Voltage T j =25oC8.6599.35V V o Output Voltage I o =5mA to 1A P o ≤15W V i =11.5to 26V8.5599.45V ∆V o *Line Regulation V i =11.5to 26V T j =25oCV i =12to 18V T j =25oC 18090mV mV ∆V o *Load Regulation I o =5to 1500mA T j =25o CI o =250to 750mA T j =25oC18090mV mV I d Quiescent Current T j =25o C 8mA ∆I d Quiescent Current Change I o =5to 1000mA 0.5mA ∆I d Quiescent Current Change V i =11.5to 26V 1mA ∆V o ∆T Output Voltage Drift I o =5mA-1.0mV/oC eN Output Noise Voltage B =10Hz to 100KHz T j =25o C 70µV SVR Supply Voltage Rejection V i =12to 23V f =120Hz55dB V d Dropout Voltage I o =1A T j =25o C2V R o Output Resistance f =1KHz 17m ΩI sc Short Circuit Current V i =35V T j =25oC400mA I s cpShort Circuit Peak CurrentT j =25o C2.2AELECTRICAL CHARACTERISTICS FOR L7885C (refer to the test circuits,T j =0to 125o C,V i =14.5V,I o =500mA,C i =0.33µF,C o =0.1µF unless otherwise specified)Symbol ParameterTest Conditions Min.Typ.Max.Unit V o Output Voltage T j =25oC 8.28.58.8V V o Output Voltage I o =5mA to 1A P o ≤15WV i =11to 26V8.18.58.9V ∆V o *Line Regulation V i =11to 27V T j =25o CV i =11.5to 17.5V T j =25oC 16080mV mV ∆V o *Load Regulation I o =5to 1500mA T j =25oCI o =250to 750mA T j =25oC16080mV mV I d Quiescent Current T j =25o C 8mA ∆I d Quiescent Current Change I o =5to 1000mA 0.5mA ∆I d Quiescent Current Change V i =11to 27V 1mA ∆V o ∆T Output Voltage Drift I o =5mA-0.8mV/oC eN Output Noise Voltage B =10Hz to 100KHz T j =25o C 55µV SVR Supply Voltage Rejection V i =12to 22V f =120Hz56dB V d Dropout Voltage I o =1A T j =25oC2V R o Output Resistance f =1KHz 16m ΩI sc Short Circuit Current V i =35V T j =25oC450mA I s cpShort Circuit Peak CurrentT j =25oC2.2A*Load and line regulation are specified at constant junction temperature.Changes in V o due to heating effects must be taken into account separately.Pulce testing with low duty cycle is used.11/25ELECTRICAL CHARACTERISTICS FOR L7815C (refer to the test circuits,T j =0to 125o C,V i =23V,I o =500mA,C i =0.33µF,C o =0.1µF unless otherwise specified)Symbol ParameterTest Conditions Min.Typ.Max.Unit V o Output Voltage T j =25oC14.41515.6V V o Output Voltage I o =5mA to 1A P o ≤15W V i =17.5to 30V14.251515.75V ∆V o *Line Regulation V i =17.5to 30V T j =25oCV i =20to 26V T j =25oC 300150mV mV ∆V o *Load Regulation I o =5to 1500mA T j =25o CI o =250to 750mA T j =25oC300150mV mV I d Quiescent Current T j =25o C 8mA ∆I d Quiescent Current Change I o =5to 1000mA 0.5mA ∆I d Quiescent Current Change V i =17.5to 30V 1mA ∆V o ∆T Output Voltage Drift I o =5mA-1mV/oC eN Output Noise Voltage B =10Hz to 100KHz T j =25o C 90µV SVR Supply Voltage Rejection V i =18.5to 28.5V f =120Hz54dB V d Dropout Voltage I o =1A T j =25o C2V R o Output Resistance f =1KHz 19m ΩI sc Short Circuit Current V i =35V T j =25oC230mA I s cpShort Circuit Peak CurrentT j =25o C2.1AELECTRICAL CHARACTERISTICS FOR L7812C (refer to the test circuits,T j =0to 125o C,V i =19V,I o =500mA,C i =0.33µF,C o =0.1µF unless otherwise specified)Symbol ParameterTest Conditions Min.Typ.Max.Unit V o Output Voltage T j =25oC11.51212.5V V o Output Voltage I o =5mA to 1A P o ≤15W V i =14.5to 27V11.41212.6V ∆V o *Line Regulation V i =14.5to 30V T j =25o CV i =16to 22V T j =25oC 240120mV mV ∆V o *Load Regulation I o =5to 1500mA T j =25oCI o =250to 750mA T j =25oC240120mV mV I d Quiescent Current T j =25o C 8mA ∆I d Quiescent Current Change I o =5to 1000mA 0.5mA ∆I d Quiescent Current Change V i =14.5to 30V 1mA ∆V o ∆T Output Voltage Drift I o =5mA-1mV/oC eN Output Noise Voltage B =10Hz to 100KHz T j =25o C 75µV SVR Supply Voltage Rejection V i =15to 25V f =120Hz55dB V d Dropout Voltage I o =1A T j =25oC2V R o Output Resistance f =1KHz 18m ΩI sc Short Circuit Current V i =35V T j =25oC350mA I s cpShort Circuit Peak CurrentT j =25o C2.2A*Load and line regulation are specified at constant junction temperature.Changes in V o due to heating effects must be taken into account separately.Pulce testing with low duty cycle is used.12/25ELECTRICAL CHARACTERISTICS FOR L7820C (refer to the test circuits,T j =0to 125o C,V i =28V,I o =500mA,C i =0.33µF,C o =0.1µF unless otherwise specified)Symbol ParameterTest Conditions Min.Typ.Max.Unit V o Output Voltage T j =25oC 19.22020.8V V o Output Voltage I o =5mA to 1A P o ≤15WV i =23to 35V192021V ∆V o *Line Regulation V i =22.5to 35V T j =25oCV i =26to 32V T j =25oC 400200mV mV ∆V o *Load Regulation I o =5to 1500mA T j =25o CI o =250to 750mA T j =25oC400200mV mV I d Quiescent Current T j =25o C 8mA ∆I d Quiescent Current Change I o =5to 1000mA 0.5mA ∆I d Quiescent Current Change V i =23to 35V 1mA ∆V o ∆T Output Voltage Drift I o =5mA-1mV/oC eN Output Noise Voltage B =10Hz to 100KHz T j =25oC 150µV SVR Supply Voltage Rejection V i =24to 35V f =120Hz52dB V d Dropout Voltage I o =1A T j =25o C2V R o Output Resistance f =1KHz 24m ΩI sc Short Circuit Current V i =35V T j =25oC180mA I s cpShort Circuit Peak CurrentT j =25o C2.1AELECTRICAL CHARACTERISTICS FOR L7818C (refer to the test circuits,T j =0to 125o C,V i =26V,I o =500mA,C i =0.33µF,C o =0.1µF unless otherwise specified)Symbol ParameterTest Conditions Min.Typ.Max.Unit V o Output Voltage T j =25oC 17.31818.7V V o Output Voltage I o =5mA to 1A P o ≤15W V i =21to 33V 17.11818.9V ∆V o *Line Regulation V i =21to 33V T j =25o CV i =24to 30VT j =25oC360180mV mV ∆V o *Load Regulation I o =5to 1500mA T j =25oCI o =250to 750mA T j =25oC360180mV mV I d Quiescent Current T j =25o C 8mA ∆I d Quiescent Current Change I o =5to 1000mA 0.5mA ∆I d Quiescent Current Change V i =21to 33V 1mA ∆V o ∆T Output Voltage Drift I o =5mA-1mV/oC eN Output Noise Voltage B =10Hz to 100KHz T j =25o C 110µV SVR Supply Voltage Rejection V i =22to 32V f =120Hz53dB V d Dropout Voltage I o =1A T j =25oC2V R o Output Resistance f =1KHz 22m ΩI sc Short Circuit Current V i =35V T j =25oC200mA I s cpShort Circuit Peak CurrentT j =25oC2.1A*Load and line regulation are specified at constant junction temperature.Changes in V o due to heating effects must be taken into account separately.Pulce testing with low duty cycle is used.13/25*Load and line regulation are specified at constant junction temperature.Changes in V o due to heating effects must be taken into account separately.Pulce testing with low duty cycle is used.ELECTRICAL CHARACTERISTICS FOR L7824C (refer to the test circuits,T j =0to 125o C,V i =33V,I o =500mA,C i =0.33µF,C o =0.1µF unless otherwise specified)Symbol ParameterTest Conditions Min.Typ.Max.Unit V o Output Voltage T j =25oC 232425V V o Output Voltage I o =5mA to 1A P o ≤15W V i =27to 38V 22.82425.2V ∆V o *Line Regulation V i =27to 38V T j =25o CV i =30to 36VT j =25oC480240mV mV ∆V o *Load Regulation I o =5to 1500mA T j =25oCI o =250to 750mA T j =25oC480240mV mV I d Quiescent Current T j =25o C 8mA ∆I d Quiescent Current Change I o =5to 1000mA 0.5mA ∆I d Quiescent Current Change V i =27to 38V 1mA ∆V o ∆T Output Voltage Drift I o =5mA-1.5mV/oC eN Output Noise Voltage B =10Hz to 100KHz T j =25o C 170µV SVR Supply Voltage Rejection V i =28to 38V f =120Hz50dB V d Dropout Voltage I o =1A T j =25oC2V R o Output Resistance f =1KHz 28m ΩI sc Short Circuit Current V i =35V T j =25oC150mA I s cpShort Circuit Peak CurrentT j =25oC2.1A14/25Figure 8:Output Impedance vs.Frequency.Figure 9:Quiescent Current vs.JunctionTemperature.Figure 4:Dropout Voltage vs.JunctionTemperature.Figure 5:Peak Output Current vs.Input/outputDifferential Voltage.Figure 6:Supply Voltage Rejection vs.Frequency.Figure 7:Output Voltage vs.JunctionTemperature.15/25Figure12:Quiescent Current vs.InputVoltage.Figure13:Fixed Output Regulator.Figure14:Current Regulator. Figure10:Load Transient Response.Figure11:Line Transient Response.NOTE:1.To specify an output voltage,substitute voltage value for”XX”.2.Although no output capacitor is need for stability,it does improve transient response.3.Required if cregulator is locate an appreciable distance from power supply filter.I O=V XXR1+I d16/25Figure 15:Circuit for Increasing OutputVoltage.Figure 16:Adjustable Output Regulator(7to 30V).Figure 17:0.5to 10V Regulator.Figure 18:High Current Voltage Regulator.I R1≥5I d V O =V XX (1+R 2R 1)+I d R 2VO =V XXR 4R 1R 1=V BEQ 1I REQ −I Q 1βQ 1I O =I REG +Q 1(I REG −V BEQ 1R 1)17/25Figure 19:High Output Current with ShortCircuit Protection.Figure 20:Tracking Voltage Regulator.Figure 21:Split Power Supply (±15V –1A).Figure 22:Negative Output Voltage Circuit.Figure 23:Switching Regulator.Figure 24:High Input Voltage Circuit.V IN =V i -(V Z +V BE )*Against potential latch-up problems.R SC =V BEQ 2I SC18/25Figure 27:High Input and Output Voltage.Figure 28:Reducing Power Dissipation withDr opping Resistor.Figure 29:Remote Shutdown.Figure 25:High Input Voltage Circuit.Figure 26:High Output Voltage Regulator.V O =V XX +V Z1R =V i (min )−V XX −V DROP (max )I O (max )+I d (max )19/25Figure 30:Power AM Modulator (unity voltagegain,I o <1A).Figure 31:Adjustable Output Voltage withTemperatureCompensation.NOTE:The circuit performs well up to 100KHzNOTE:Q 2is connected as a diode in order to compensate the variation of the Q 1V BE with the temperature.C allows a slow rise-time of the V oFigure 32:Light Controllers (V o min =V xx +V BE ).Figure 33:Protection against Input Short-circuitwith High Capacitance Loads.Application with high capacitance loads and an output voltage greater than 6volts need an external diode (see fig.33)to protect the deviceagainst input short circuit.In this case the input voltage falls rapidly while the output voltage decrease slowly.The capacitance dischrges by means of the Base-Emitter junction of the series pass transistor in the regulator.If the energy is sufficently high,the transistor may be destroyed.The external diode by-passes the current from the IC to ground.V O falls when the light goes upV O rises when the light goes upV O =VXX(1+R 2R 1)+V BE 20/25。

lm7824电源的电容和电阻选择

lm7824电源的电容和电阻选择开关电源又称开关电源和开关变换器，是一种高频电能转换器件，也是电源的一种。

开关电源的输入电路也是开关电源的重要电路元件，那么如何计算电阻和电容呢？其实高品质的开关电源电容和电阻，大部分都是很好的匹配和合适的，下面会详细讲解。

一、放电电阻放电电阻R1的选择原则是：电阻值越小越好，以便为X电容容量的选择留出足够的空间。

R1的选择还应考虑耐压（通常选用金属氧化膜电阻，电压降低0.75）和功耗（按额定功率的0.6降额）。

假设所选电阻的额定功率为PR，输入电压的最大有效值为vinmax，则：R1>（vinmax）2/（0.6×PR）（1）例如PR=2W，vinmax=300V，则R1>75K，R1=100k。

R1的另一个限制是瞬时功耗不能超过额定功率的四倍。

R1的最大瞬时功耗与浪涌或雷击通过保护电路后的剩余电压有关。

当剩余电压为1200V时，R1还应满足以下要求：R1>12002/（4×Pr）（2）将Pr=2W代入上式，得到R1>180K。

因此，R1=100k不满足此条件。

因此，取R1=200K是合理的，这里需要注意的是：考虑到放电电阻R1的瞬时功耗，R1的位置也非常重要。

把R1放在前面显然不合适，但最好放在中间或后面。

如果要进一步减小R1，可以使用两个或两个以上并联电阻，具体情况可根据具体情况确定。

当50A单体的两个电阻并联时，放电电阻为R1=100k。

开关电源输入电路中的电阻和电容如何选择？这种方法简单实用二、X、Y电容1、X电容（1）X电容的选定X电容的选择受放电时间的限制。

根据安全规程要求，从输入端电压放电到安全电压峰值42.4v的时间小于1s，可根据以下经验公式估算：CX为所有x个电容的总和。

Cx<1/（2.2×R1）（2）将R1=100k代入上式可得：Cx<4.5uf，取Cx=4.4uf，共有2个电容器，每个X电容器的容量为2.2uf。

L7815CD2T-TR中文资料

L7805CP L7852CP L7806CP L7808CP L7885CP L7809CP L7810CP L7812CP L7815CP L7818CP L7820CP L7824CP
L7805CF L7852CF L7806CF L7ห้องสมุดไป่ตู้08CF L7885CF L7809CF
L7812C-V L7815C-V
L7800 SERIES
POSITIVE VOLTAGE REGULATORS
s s
s s s
OUTPUT CURRENT TO 1.5A OUTPUT VOLTAGES OF 5; 5.2; 6; 8; 8.5; 9; 10; 12; 15; 18; 24V THERMAL OVERLOAD PROTECTION SHORT CIRCUIT PROTECTION OUTPUT TRANSITION SOA PROTECTION
5/34
L7800 SERIES
Table 5: Electrical Characteristics Of L7806 (refer to the test circuits, TJ = -55 to 150°C, VI = 11V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified).
Symbol Parameter D2PAK 3 62.5 TO-220 5 50 TO-220FP TO-220FM 5 60 5 60 TO-3 4 35 Unit °C/W °C/W
Rthj-case Thermal Resistance Junction-case Max Thermal Resistance Junction-ambient Rthj-amb Max

L7820C中文资料

1/34November 2004s OUTPUT CURRENT TO 1.5AsOUTPUT VOLTAGES OF 5; 5.2; 6; 8; 8.5; 9; 10; 12; 15; 18; 24Vs THERMAL OVERLOAD PROTECTION s SHORT CIRCUIT PROTECTIONsOUTPUT TRANSITION SOA PROTECTIONDESCRIPTIONThe L7800 series of three-terminal positive regulators is available in TO-220, TO-220FP,TO-220FM, TO-3 and D 2PAK packages and several fixed output voltages, making it useful in a wide range of applications. These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each type employs internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltage and currents.L7800SERIESPOSITIVE VOLTAGE REGULATORSL7800 SERIESTable 1: Absolute Maximum RatingsAbsolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.Table 2: Thermal DataFigure 2: Schematic DiagramSymbol ParameterValue Unit V I DC Input Voltage for V O = 5 to 18V 35Vfor V O = 20, 24V40I O Output Current Internally Limited P tot Power DissipationInternally LimitedT stg Storage Temperature Range-65 to 150°C T opOperating Junction Temperature Range for L7800-55 to 150°C for L7800C0 to 150SymbolParameterD 2PAK TO-220TO-220FP TO-220FMTO-3Unit R thj-case Thermal Resistance Junction-case Max 35554°C/W R thj-ambThermal Resistance Junction-ambient Max62.550606035°C/WL7800 SERIES3/34Figure 3: Connection Diagram (top view)Table 3: Order Codes(*) Available in Tape & Reel with the suffix "-TR".TYPE TO-220(A Type)TO-220(C Type)TO-220(E Type)D 2PAK (A Type) (*)D 2PAK (C Type)(T & R)TO-220FPTO-220FMTO-3L7805L7805T L7805C L7805CV L7805C-V L7805CV1L7805CD2T L7805C-D2TRL7805CP L7805CF L7805CT L7852C L7852CV L7852CD2T L7852CP L7852CF L7852CT L7806L7806T L7806C L7806CV L7806C-V L7806CD2T L7806CP L7806CF L7806CT L7808L7808T L7808C L7808CV L7808C-V L7808CD2T L7808CP L7808CF L7808CT L7885C L7885CV L7885CD2T L7885CP L7885CF L7885CT L7809C L7809CV L7809C-VL7809CD2T L7809CP L7809CFL7809CT L7810C L7810CV L7810CD2T L7810CP L7812L7812T L7812C L7812CV L7812C-V L7812CD2T L7812CP L7812CF L7812CT L7815L7815T L7815C L7815CV L7815C-VL7815CD2T L7815CP L7815CF L7815CT L7818L7818T L7818C L7818CV L7818CD2T L7818CP L7818CF L7818CT L7820L7820T L7820C L7820CV L7820CD2T L7820CP L7820CF L7820CT L7824L7824T L7824CL7824CVL7824CD2TL7824CPL7824CFL7824CTL7800 SERIESFigure 4: Application CircuitsTEST CIRCUITSFigure 5: DC ParameterFigure 6: Load Regulation4/34L7800 SERIES5/34Figure 7: Ripple RejectionTable 4: Electrical Characteristics Of L7805 (refer to the test circuits, T J = -55 to 150°C, V I = 10V,I O = 500 mA, C I = 0.33 µF, C O = 0.1 µF unless otherwise specified).(*) Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.Symbol ParameterTest ConditionsMin.Typ.Max.Unit V O Output Voltage T J = 25°C 4.85 5.2V V O Output Voltage I O = 5 mA to 1 A P O ≤ 15WV I = 8 to 20 V 4.655 5.35V ∆V O (*)Line Regulation V I = 7 to 25 V T J = 25°C 350mVV I = 8 to 12 V T J = 25°C 125∆V O (*)Load Regulation I O = 5 mA to 1.5 A T J = 25°C 100mV I O = 250 to 750 mA T J = 25°C25I d Quiescent Current T J = 25°C 6mA ∆I dQuiescent Current ChangeI O = 5 mA to 1 A 0.5mA V I = 8 to 25 V0.8∆V O /∆T Output Voltage Drift I O = 5 mA0.6mV/°C eN Output Noise Voltage B =10Hz to 100KHz T J = 25°C40µV/V O SVR Supply Voltage Rejection V I = 8 to 18 V f = 120Hz68dB V d Dropout Voltage I O = 1 A T J = 25°C2 2.5V R O Output Resistance f = 1 KHz 17m ΩI sc Short Circuit Current V I = 35 V T J = 25°C0.75 1.2A I scpShort Circuit Peak CurrentT J = 25°C1.32.23.3AL7800 SERIES6/34Table 5: Electrical Characteristics Of L7806 (refer to the test circuits, T J = -55 to 150°C, V I = 11V,I O = 500 mA, C I = 0.33 µF, C O = 0.1 µF unless otherwise specified).(*) Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.Table 6: Electrical Characteristics Of L7808 (refer to the test circuits, T J = -55 to 150°C, V I = 14V,I O = 500 mA, C I = 0.33 µF, C O = 0.1 µF unless otherwise specified).(*) Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.Symbol ParameterTest ConditionsMin.Typ.Max.Unit V O Output Voltage T J = 25°C 5.756 6.25V V O Output Voltage I O = 5 mA to 1 A P O ≤ 15WV I = 9 to 21 V 5.6566.35V ∆V O (*)Line Regulation V I = 8 to 25 V T J = 25°C 60mVV I = 9 to 13 V T J = 25°C 30∆V O (*)Load Regulation I O = 5 mA to 1.5 A T J = 25°C 100mV I O = 250 to 750 mA T J = 25°C30I d Quiescent Current T J = 25°C 6mA ∆I dQuiescent Current ChangeI O = 5 mA to 1 A 0.5mA V I = 9 to 25 V0.8∆V O /∆T Output Voltage Drift I O = 5 mA0.7mV/°C eN Output Noise Voltage B =10Hz to 100KHz T J = 25°C40µV/V O SVR Supply Voltage Rejection V I = 9 to 19 V f = 120Hz65dB V d Dropout Voltage I O = 1 A T J = 25°C2 2.5V R O Output Resistance f = 1 KHz 19m ΩI sc Short Circuit Current V I = 35 V T J = 25°C0.75 1.2A I scpShort Circuit Peak CurrentT J = 25°C1.32.23.3A Symbol ParameterTest ConditionsMin.Typ.Max.Unit V O Output Voltage T J = 25°C 7.788.3V V O Output Voltage I O = 5 mA to 1 A P O ≤ 15WV I = 11.5 to 23 V 7.688.4V ∆V O (*)Line Regulation V I = 10.5 to 25 V T J = 25°C 80mVV I = 11 to 17 V T J = 25°C 40∆V O (*)Load Regulation I O = 5 mA to 1.5 A T J = 25°C 100mV I O = 250 to 750 mA T J = 25°C40I d Quiescent Current T J = 25°C 6mA ∆I dQuiescent Current ChangeI O = 5 mA to 1 A 0.5mA V I = 11.5 to 25 V0.8∆V O /∆T Output Voltage Drift I O = 5 mA1mV/°C eN Output Noise Voltage B =10Hz to 100KHz T J = 25°C 40µV/V O SVR Supply Voltage Rejection V I = 11.5 to 21.5 V f = 120Hz62dB V d Dropout Voltage I O = 1 A T J = 25°C2 2.5V R O Output Resistance f = 1 KHz 16m ΩI sc Short Circuit Current V I = 35 V T J = 25°C0.75 1.2A I scpShort Circuit Peak CurrentT J = 25°C1.32.23.3AL7800 SERIES7/34Table 7: Electrical Characteristics Of L7812 (refer to the test circuits, T J = -55 to 150°C, V I = 19V,I O = 500 mA, C I = 0.33 µF, C O = 0.1 µF unless otherwise specified).(*) Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.Table 8: Electrical Characteristics Of L7815 (refer to the test circuits, T J = -55 to 150°C, V I = 23V,I O = 500 mA, C I = 0.33 µF, C O = 0.1 µF unless otherwise specified).(*) Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.Symbol ParameterTest ConditionsMin.Typ.Max.Unit V O Output Voltage T J = 25°C 11.51212.5V V O Output Voltage I O = 5 mA to 1 A P O ≤ 15WV I = 15.5 to 27 V 11.41212.6V ∆V O (*)Line Regulation V I = 14.5 to 30 V T J = 25°C 120mVV I = 16 to 22 V T J = 25°C 60∆V O (*)Load Regulation I O = 5 mA to 1.5 A T J = 25°C 100mV I O = 250 to 750 mA T J = 25°C60I d Quiescent Current T J = 25°C 6mA ∆I dQuiescent Current ChangeI O = 5 mA to 1 A 0.5mA V I = 15 to 30 V0.8∆V O /∆T Output Voltage Drift I O = 5 mA1.5mV/°C eN Output Noise Voltage B =10Hz to 100KHz T J = 25°C 40µV/V O SVR Supply Voltage Rejection V I = 15 to 25 V f = 120Hz61dB V d Dropout Voltage I O = 1 A T J = 25°C2 2.5V R O Output Resistance f = 1 KHz 18m ΩI sc Short Circuit Current V I = 35 V T J = 25°C0.75 1.2A I scpShort Circuit Peak CurrentT J = 25°C1.32.23.3A Symbol ParameterTest ConditionsMin.Typ.Max.Unit V O Output Voltage T J = 25°C 14.41515.6V V O Output Voltage I O = 5 mA to 1 A P O ≤ 15WV I = 18.5 to 30 V 14.251515.75V ∆V O (*)Line Regulation V I = 17.5 to 30 V T J = 25°C 150mVV I = 20 to 26 V T J = 25°C 75∆V O (*)Load Regulation I O = 5 mA to 1.5 A T J = 25°C 150mV I O = 250 to 750 mA T J = 25°C75I d Quiescent Current T J = 25°C 6mA ∆I dQuiescent Current ChangeI O = 5 mA to 1 A 0.5mA V I = 18.5 to 30 V0.8∆V O /∆T Output Voltage Drift I O = 5 mA1.8mV/°C eN Output Noise Voltage B =10Hz to 100KHz T J = 25°C 40µV/V O SVR Supply Voltage Rejection V I = 18.5 to 28.5 V f = 120Hz60dB V d Dropout Voltage I O = 1 A T J = 25°C2 2.5V R O Output Resistance f = 1 KHz 19m ΩI sc Short Circuit Current V I = 35 V T J = 25°C0.75 1.2A I scpShort Circuit Peak CurrentT J = 25°C1.32.23.3AL7800 SERIES8/34Table 9: Electrical Characteristics Of L7818 (refer to the test circuits, T J = -55 to 150°C, V I = 26V,I O = 500 mA, C I = 0.33 µF, C O = 0.1 µF unless otherwise specified).(*) Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.Table 10: Electrical Characteristics Of L7820 (refer to the test circuits, T J = -55 to 150°C, V I = 28V,I O = 500 mA, C I = 0.33 µF, C O = 0.1 µF unless otherwise specified).(*) Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.Symbol ParameterTest ConditionsMin.Typ.Max.Unit V O Output Voltage T J = 25°C 17.31818.7V V O Output Voltage I O = 5 mA to 1 A P O ≤ 15WV I = 22 to 33 V 17.11818.9V ∆V O (*)Line Regulation V I = 21 to 33 V T J = 25°C 180mVV I = 24 to 30 V T J = 25°C 90∆V O (*)Load Regulation I O = 5 mA to 1.5 A T J = 25°C 180mV I O = 250 to 750 mA T J = 25°C90I d Quiescent Current T J = 25°C 6mA ∆I dQuiescent Current ChangeI O = 5 mA to 1 A 0.5mA V I = 22 to 33 V0.8∆V O /∆T Output Voltage Drift I O = 5 mA2.3mV/°C eN Output Noise Voltage B =10Hz to 100KHz T J = 25°C 40µV/V O SVR Supply Voltage Rejection V I = 22 to 32 V f = 120Hz59dB V d Dropout Voltage I O = 1 A T J = 25°C2 2.5V R O Output Resistance f = 1 KHz 22m ΩI sc Short Circuit Current V I = 35 V T J = 25°C0.75 1.2A I scpShort Circuit Peak CurrentT J = 25°C1.32.23.3A Symbol ParameterTest ConditionsMin.Typ.Max.Unit V O Output Voltage T J = 25°C 19.22020.8V V O Output Voltage I O = 5 mA to 1 A P O ≤ 15WV I = 24 to 35 V 192021V ∆V O (*)Line Regulation V I = 22.5 to 35 V T J = 25°C 200mVV I = 26 to 32 V T J = 25°C 100∆V O (*)Load Regulation I O = 5 mA to 1.5 A T J = 25°C 200mV I O = 250 to 750 mA T J = 25°C100I d Quiescent Current T J = 25°C 6mA ∆I dQuiescent Current ChangeI O = 5 mA to 1 A 0.5mA V I = 24 to 35 V0.8∆V O /∆T Output Voltage Drift I O = 5 mA2.5mV/°C eN Output Noise Voltage B =10Hz to 100KHz T J = 25°C 40µV/V O SVR Supply Voltage Rejection V I = 24 to 35 V f = 120Hz58dB V d Dropout Voltage I O = 1 A T J = 25°C2 2.5V R O Output Resistance f = 1 KHz 24m ΩI sc Short Circuit Current V I = 35 V T J = 25°C0.75 1.2A I scpShort Circuit Peak CurrentT J = 25°C1.32.23.3AL7800 SERIES9/34Table 11: Electrical Characteristics Of L7824 (refer to the test circuits, T J = -55 to 150°C, V I = 33V,I O = 500 mA, C I = 0.33 µF, C O = 0.1 µF unless otherwise specified).(*) Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.Table 12: Electrical Characteristics Of L7805C (refer to the test circuits, T J = 0 to 125°C, V I = 10V,I O = 500 mA, C I = 0.33 µF, C O = 0.1 µF unless otherwise specified).(*) Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.Symbol ParameterTest ConditionsMin.Typ.Max.Unit V O Output Voltage T J =25°C 232425V V O Output Voltage I O = 5 mA to 1 A P O ≤ 15WV I = 28 to 38 V 22.82425.2V ∆V O (*)Line Regulation V I = 27 to 38 V T J = 25°C 240mVV I = 30 to 36 V T J = 25°C 120∆V O (*)Load Regulation I O = 5 mA to 1.5 A T J = 25°C 240mV I O = 250 to 750 mA T J = 25°C120I d Quiescent Current T J = 25°C 6mA ∆I dQuiescent Current ChangeI O = 5 mA to 1 A 0.5mA V I = 28 to 38 V0.8∆V O /∆T Output Voltage Drift I O = 5 mA3mV/°C eN Output Noise Voltage B =10Hz to 100KHz T J = 25°C 40µV/V O SVR Supply Voltage Rejection V I = 28 to 38 V f = 120Hz56dB V d Dropout Voltage I O = 1 A T J = 25°C2 2.5V R O Output Resistance f = 1 KHz 28m ΩI sc Short Circuit Current V I = 35 V T J = 25°C0.75 1.2A I scpShort Circuit Peak CurrentT J = 25°C1.32.23.3A Symbol ParameterTest ConditionsMin.Typ.Max.Unit V O Output Voltage T J = 25°C 4.85 5.2V V O Output Voltage I O = 5 mA to 1 A P O ≤ 15WV I = 7 to 20 V 4.755 5.25V ∆V O (*)Line Regulation V I = 7 to 25 V T J = 25°C 3100mVV I = 8 to 12 VT J = 25°C 150∆V O (*)Load Regulation I O = 5 mA to 1.5 A T J = 25°C 100mV I O = 250 to 750 mA T J = 25°C50I d Quiescent Current T J = 25°C 8mA ∆I dQuiescent Current ChangeI O = 5 mA to 1 A 0.5mA V I = 7 to 25 V0.8∆V O /∆T Output Voltage Drift I O = 5 mA-1.1mV/°C eN Output Noise Voltage B =10Hz to 100KHz T J = 25°C40µV/V O SVR Supply Voltage Rejection V I = 8 to 18 V f = 120Hz62dB V d Dropout Voltage I O = 1 A T J = 25°C2V R O Output Resistance f = 1 KHz 17m ΩI sc Short Circuit Current V I = 35 V T J = 25°C 0.75A I scpShort Circuit Peak CurrentT J = 25°C2.2AL7800 SERIES10/34Table 13: Electrical Characteristics Of L7852C (refer to the test circuits, T J = 0 to 125°C, V I = 10V,I O = 500 mA, C I = 0.33 µF, C O = 0.1 µF unless otherwise specified).(*) Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.Table 14: Electrical Characteristics Of L7806C (refer to the test circuits, T J = 0 to 125°C, V I = 11V,I O = 500 mA, C I = 0.33 µF, C O = 0.1 µF unless otherwise specified).(*) Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.Symbol ParameterTest ConditionsMin.Typ.Max.Unit V O Output Voltage T J = 25°C 5.0 5.2 5.4V V O Output Voltage I O = 5 mA to 1 A P O ≤ 15WV I = 8 to 20 V 4.955.2 5.45V ∆V O (*)Line Regulation V I = 7 to 25 V T J = 25°C 3105mVV I = 8 to 12 V T J = 25°C 152∆V O (*)Load Regulation I O = 5 mA to 1.5 A T J = 25°C 105mV I O = 250 to 750 mA T J = 25°C52I d Quiescent Current T J = 25°C 8mA ∆I dQuiescent Current ChangeI O = 5 mA to 1 A 0.5mA V I = 7 to 25 V1.3∆V O /∆T Output Voltage Drift I O = 5 mA-1mV/°C eN Output Noise Voltage B =10Hz to 100KHz T J = 25°C42µV/V O SVR Supply Voltage Rejection V I = 8 to 18 V f = 120Hz61dB V d Dropout Voltage I O = 1 A T J = 25°C2V R O Output Resistance f = 1 KHz 17m ΩI sc Short Circuit Current V I = 35 V T J = 25°C 0.75A I scpShort Circuit Peak CurrentT J = 25°C2.2A Symbol ParameterTest ConditionsMin.Typ.Max.Unit V O Output Voltage T J = 25°C 5.756 6.25V V O Output Voltage I O = 5 mA to 1 A P O ≤ 15WV I = 8 to 21 V 5.766.3V ∆V O (*)Line Regulation V I = 8 to 25 V T J = 25°C 120mVV I = 9 to 13 V T J = 25°C 60∆V O (*)Load Regulation I O = 5 mA to 1.5 A T J = 25°C 120mV I O = 250 to 750 mA T J = 25°C60I d Quiescent Current T J = 25°C 8mA ∆I dQuiescent Current ChangeI O = 5 mA to 1 A 0.5mA V I = 8 to 25 V1.3∆V O /∆T Output Voltage Drift I O = 5 mA-0.8mV/°C eN Output Noise Voltage B =10Hz to 100KHz T J = 25°C45µV/V O SVR Supply Voltage Rejection V I = 9 to 19 V f = 120Hz59dB V d Dropout Voltage I O = 1 A T J = 25°C2V R O Output Resistance f = 1 KHz 19m ΩI sc Short Circuit Current V I = 35 V T J = 25°C 0.55A I scpShort Circuit Peak CurrentT J = 25°C2.2A(*) Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.Table 16: Electrical Characteristics Of L7885C (refer to the test circuits, T J = 0 to 125°C, V I = 14.5V,I O = 500 mA, C I = 0.33 µF, C O = 0.1 µF unless otherwise specified).(*) Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.Symbol ParameterTest ConditionsMin.Typ.Max.Unit V O Output Voltage T J = 25°C 7.788.3V V O Output Voltage I O = 5 mA to 1 A P O ≤ 15WV I = 10.5 to 25 V 7.688.4V ∆V O (*)Line Regulation V I = 10.5 to 25 V T J = 25°C 160mVV I = 11 to 17 V T J = 25°C 80∆V O (*)Load Regulation I O = 5 mA to 1.5 A T J = 25°C 160mV I O = 250 to 750 mA T J = 25°C80I d Quiescent Current T J = 25°C 8mA ∆I dQuiescent Current ChangeI O = 5 mA to 1 A 0.5mA V I = 10.5 to 25 V1∆V O /∆T Output Voltage Drift I O = 5 mA-0.8mV/°C eN Output Noise Voltage B =10Hz to 100KHz T J = 25°C 52µV/V O SVR Supply Voltage Rejection V I = 11.5 to 21.5 V f = 120Hz56dB V d Dropout Voltage I O = 1 A T J = 25°C2V R O Output Resistance f = 1 KHz 16m ΩI sc Short Circuit Current V I = 35 V T J = 25°C 0.45A I scpShort Circuit Peak CurrentT J = 25°C2.2A Symbol ParameterTest ConditionsMin.Typ.Max.Unit V O Output Voltage T J = 25°C 8.28.58.8V V O Output Voltage I O = 5 mA to 1 A P O ≤ 15WV I = 11 to 26 V 8.18.58.9V ∆V O (*)Line Regulation V I = 11 to 27 V T J = 25°C 160mVV I = 11.5 to 17.5 V T J = 25°C 80∆V O (*)Load Regulation I O = 5 mA to 1.5 A T J = 25°C 160mV I O = 250 to 750 mA T J = 25°C80I d Quiescent Current T J = 25°C 8mA ∆I dQuiescent Current ChangeI O = 5 mA to 1 A 0.5mA V I = 11 to 27 V1∆V O /∆T Output Voltage Drift I O = 5 mA-0.8mV/°C eN Output Noise Voltage B =10Hz to 100KHz T J = 25°C 55µV/V O SVR Supply Voltage Rejection V I = 12 to 22 V f = 120Hz56dB V d Dropout Voltage I O = 1 A T J = 25°C2V R O Output Resistance f = 1 KHz 16m ΩI sc Short Circuit Current V I = 35 V T J = 25°C 0.45A I scpShort Circuit Peak CurrentT J = 25°C2.2A(*) Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.Table 18: Electrical Characteristics Of L7810C (refer to the test circuits, T J = 0 to 125°C, V I = 16V,I O = 500 mA, C I = 0.33 µF, C O = 0.1 µF unless otherwise specified).(*) Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.Symbol ParameterTest ConditionsMin.Typ.Max.Unit V O Output Voltage T J = 25°C 8.6499.36V V O Output Voltage I O = 5 mA to 1 A P O ≤ 15WV I = 11.5 to 26 V 8.5599.45V ∆V O (*)Line Regulation V I = 11.5 to 26 V T J = 25°C 180mVV I = 12 to 18 V T J = 25°C 90∆V O (*)Load Regulation I O = 5 mA to 1.5 A T J = 25°C 180mV I O = 250 to 750 mA T J = 25°C90I d Quiescent Current T J = 25°C 8mA ∆I dQuiescent Current ChangeI O = 5 mA to 1 A 0.5mA V I = 11.5 to 26 V1∆V O /∆T Output Voltage Drift I O = 5 mA-1mV/°C eN Output Noise Voltage B =10Hz to 100KHz T J = 25°C 70µV/V O SVR Supply Voltage Rejection V I = 12 to 23 V f = 120Hz55dB V d Dropout Voltage I O = 1 A T J = 25°C2V R O Output Resistance f = 1 KHz 17m ΩI sc Short Circuit Current V I = 35 V T J = 25°C 0.40A I scpShort Circuit Peak CurrentT J = 25°C2.2A Symbol ParameterTest ConditionsMin.Typ.Max.Unit V O Output Voltage T J = 25°C 9.61010.4V V O Output Voltage I O = 5 mA to 1 A P O ≤ 15WV I = 12.5 to 26 V 9.51010.5V ∆V O (*)Line Regulation V I = 12.5 to 26 V T J = 25°C 200mVV I = 13.5 to 19 V T J = 25°C 100∆V O (*)Load Regulation I O = 5 mA to 1.5 A T J = 25°C 200mV I O = 250 to 750 mA T J = 25°C100I d Quiescent Current T J = 25°C 8mA ∆I dQuiescent Current ChangeI O = 5 mA to 1 A 0.5mA V I = 12.5 to 26 V1∆V O /∆T Output Voltage Drift I O = 5 mA-1mV/°C eN Output Noise Voltage B =10Hz to 100KHz T J = 25°C 70µV/V O SVR Supply Voltage Rejection V I = 13 to 23 V f = 120Hz55dB V d Dropout Voltage I O = 1 A T J = 25°C2V R O Output Resistance f = 1 KHz 17m ΩI sc Short Circuit Current V I = 35 V T J = 25°C 0.40A I scpShort Circuit Peak CurrentT J = 25°C2.2A(*) Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.Table 20: Electrical Characteristics Of L7815C (refer to the test circuits, T J = 0 to 125°C, V I = 23V,I O = 500 mA, C I = 0.33 µF, C O = 0.1 µF unless otherwise specified).(*) Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.Symbol ParameterTest ConditionsMin.Typ.Max.Unit V O Output Voltage T J = 25°C 11.51212.5V V O Output Voltage I O = 5 mA to 1 A P O ≤ 15WV I = 14.5 to 27 V 11.41212.6V ∆V O (*)Line Regulation V I = 14.5 to 30 V T J = 25°C 240mVV I = 16 to 22 V T J = 25°C 120∆V O (*)Load Regulation I O = 5 mA to 1.5 A T J = 25°C 240mV I O = 250 to 750 mA T J = 25°C120I d Quiescent Current T J = 25°C 8mA ∆I dQuiescent Current ChangeI O = 5 mA to 1 A 0.5mA V I = 14.5 to 30 V1∆V O /∆T Output Voltage Drift I O = 5 mA-1mV/°C eN Output Noise Voltage B =10Hz to 100KHz T J = 25°C 75µV/V O SVR Supply Voltage Rejection V I = 15 to 25 V f = 120Hz55dB V d Dropout Voltage I O = 1 A T J = 25°C2V R O Output Resistance f = 1 KHz 18m ΩI sc Short Circuit Current V I = 35 V T J = 25°C 0.35A I scpShort Circuit Peak CurrentT J = 25°C2.2A Symbol ParameterTest ConditionsMin.Typ.Max.Unit V O Output Voltage T J = 25°C 14.51515.6V V O Output Voltage I O = 5 mA to 1 A P O ≤ 15WV I = 17.5 to 30 V 14.251515.75V ∆V O (*)Line Regulation V I = 17.5 to 30 V T J = 25°C 300mVV I = 20 to 26 V T J = 25°C 150∆V O (*)Load Regulation I O = 5 mA to 1.5 A T J = 25°C 300mV I O = 250 to 750 mA T J = 25°C150I d Quiescent Current T J = 25°C 8mA ∆I dQuiescent Current ChangeI O = 5 mA to 1 A 0.5mA V I = 17.5 to 30 V1∆V O /∆T Output Voltage Drift I O = 5 mA-1mV/°C eN Output Noise Voltage B =10Hz to 100KHz T J = 25°C 90µV/V O SVR Supply Voltage Rejection V I = 18.5 to 28.5 V f = 120Hz54dB V d Dropout Voltage I O = 1 A T J = 25°C2V R O Output Resistance f = 1 KHz 19m ΩI sc Short Circuit Current V I = 35 V T J = 25°C 0.23A I scpShort Circuit Peak CurrentT J = 25°C2.2A(*) Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.Table 22: Electrical Characteristics Of L7820C (refer to the test circuits, T J = 0 to 125°C, V I = 28V,I O = 500 mA, C I = 0.33 µF, C O = 0.1 µF unless otherwise specified).(*) Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.Symbol ParameterTest ConditionsMin.Typ.Max.Unit V O Output Voltage T J = 25°C 17.31818.7V V O Output Voltage I O = 5 mA to 1 A P O ≤ 15WV I = 21 to 33 V 17.11818.9V ∆V O (*)Line Regulation V I = 21 to 33 V T J = 25°C 360mVV I = 24 to 30 V T J = 25°C 180∆V O (*)Load Regulation I O = 5 mA to 1.5 A T J = 25°C 360mV I O = 250 to 750 mA T J = 25°C180I d Quiescent Current T J = 25°C 8mA ∆I dQuiescent Current ChangeI O = 5 mA to 1 A 0.5mA V I = 21 to 33 V1∆V O /∆T Output Voltage Drift I O = 5 mA-1mV/°C eN Output Noise Voltage B =10Hz to 100KHz T J = 25°C 110µV/V O SVR Supply Voltage Rejection V I = 22 to 32 V f = 120Hz53dB V d Dropout Voltage I O = 1 A T J = 25°C2V R O Output Resistance f = 1 KHz 22m ΩI sc Short Circuit Current V I = 35 V T J = 25°C 0.20A I scpShort Circuit Peak CurrentT J = 25°C2.1A Symbol ParameterTest ConditionsMin.Typ.Max.Unit V O Output Voltage T J = 25°C 19.22020.8V V O Output Voltage I O = 5 mA to 1 A P O ≤ 15WV I = 23 to 35 V 192021V ∆V O (*)Line Regulation V I = 22.5 to 35 V T J = 25°C 400mVV I = 26 to 32 V T J = 25°C 200∆V O (*)Load Regulation I O = 5 mA to 1.5 A T J = 25°C 400mV I O = 250 to 750 mA T J = 25°C200I d Quiescent Current T J = 25°C 8mA ∆I dQuiescent Current ChangeI O = 5 mA to 1 A 0.5mA V I = 23 to 35 V1∆V O /∆T Output Voltage Drift I O = 5 mA-1mV/°C eN Output Noise Voltage B =10Hz to 100KHz T J = 25°C 150µV/V O SVR Supply Voltage Rejection V I = 24 to 35 V f = 120Hz52dB V d Dropout Voltage I O = 1 A T J = 25°C2V R O Output Resistance f = 1 KHz 24m ΩI sc Short Circuit Current V I = 35 V T J = 25°C 0.18A I scpShort Circuit Peak CurrentT J = 25°C2.1A。

L7812CD2T中文资料

Io = 5 mA
0.6
∆T
eN Output Noise Voltage
B = 10Hz to 100KHz Tj = 25 oC
40
SVR Supply Voltage Rejection Vd Dropout Voltage
Vi = 8 to 18 V f = 120 Hz
Io = 1 A
Tj = 25 oC
D2PAK
3 62.5
TO-220
3 50
ISOWATT220
4 60
TO-3
4 35
Unit
oC/W oC/W
CONNECTION DIAGRAM AND ORDERING NUMBERS (top view)
TO-220 & ISOWATT220
Type
TO-220
D2PAK (*)
L7805 L7805C L7852C L7806 L7806C L7808 L7808C L7885C L7809C L7812 L7812C L7815 L7815C L7818 L7818C L7820 L7820C L7824 L7824C
元器件交易网
L7800 SERIES
POSITIVE VOLTAGE REGULATORS
s OUTPUT CURRENT UP TO 1.5 A s OUTPUT VOLTAGES OF 5; 5.2; 6; 8; 8.5; 9;
12; 15; 18; 24V s THERMAL OVERLOAD PROTECTION s SHORT CIRCUIT PROTECTION s OUTPUT TRANSITION SOA PROTECTION
Tj = 25 oC

78稳压块-ST

Symbol Parameter D2PAK 3 62.5 TO-220 5 50 TO-220FP TO-220FM 5 60 5 60 TO-3 4 35 Unit °C/W °C/W
Rthj-case Thermal Resistance Junction-case Max Thermal Resistance Junction-ambient Rthj-amb Max
Symbol VO VO ∆VO(*) ∆VO(*) Id ∆Id Parameter Output Voltage Output Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change TJ = 25°C IO = 5 mA to 1 A VI = 9 to 21 V VI = 8 to 25 V VI = 9 to 13 V IO = 5 mA to 1.5 A IO = 250 to 750 mA TJ = 25°C IO = 5 mA to 1 A VI = 9 to 25 V ∆VO/∆T Output Voltage Drift eN SVR Vd RO Isc Iscp Output Noise Voltage Supply Voltage Rejection Dropout Voltage Output Resistance Short Circuit Current Short Circuit Peak Current IO = 5 mA B =10Hz to 100KHz VI = 9 to 19 V IO = 1 A f = 1 KHz VI = 35 V TJ = 25°C TJ = 25°C 1.3 TJ = 25°C TJ = 25°C f = 120Hz 65 2 19 0.75 2.2 1.2 3.3 2.5 0.7 40 PO ≤ 15W TJ = 25°C TJ = 25°C TJ = 25°C TJ = 25°C Test Conditions Min. 5.75 5.65 Typ. 6 6 Max. 6.25 6.35 60 30 100 30 6 0.5 0.8 mV/°C µV/VO dB V mΩ A A mA mA mV Unit V V mV

L7824CF中文资料

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
Table 2: Thermal Data
(*) Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
DESCRIPTION The L7800 series of three-terminal positive regulators is available in TO-220, TO-220FP, TO-220FM, TO-3 and D2PAK packages and several fixed output voltages, making it useful in a wide range of applications. These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each type employs internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltage and currents.

7824和7805的原理

7824和7805的原理
7824和7805都是线性稳压器，但它们的原理略有不同。

7824是一种常用的三端稳压器，其工作原理基于Zener二极管的反向击穿特性。

在正常工作情况下，7824的输入端（VIN）连接至输入电源，输出端（VOUT）则连接至负载电路。

当输入电源的电压高于7824所设定的输出电压（通常为24V）时，7824会将多余的电压以热能的形式消耗掉，从而将输出电压稳定在设定值。

当输入电源的电压低于设定输出电压时，Zener二极管不会反向击穿，此时VOUT的电压会随着输入电压的降低而降低。

7805的工作原理则是利用一个调节电流的晶体管（通常是NPN晶体管）来控制一个稳压电路的输出电压。

其输入电压可能随着时间或负载的变化而变化，而调节电流晶体管会根据输入电压和输出电压之间的差值来调整输出电压，以保持一个稳定的输出电压。

如需了解更多关于7824和7805的工作原理，建议咨询专业人士或查阅相关文献资料。

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TO-3
L7805T L7805CT L7852CT L7806T L7806CT L7808T L7808CT L7885CT L7809CT L7812T L7812CT L7815T L7815CT L7818T L7818CT L7820T L7820CT L7824T L7824CT
TO-3
65
2
2.5
Ro Output Resistance Isc Short Circuit Current Is cp Short Circuit Peak Current
f = 1 KHz
Vi = 35 V Tj = 25 oC
Tj = 25 oC
19
0.75 1.2
1.3
2.2
3.3
Unit V V
Io Output Current
Ptot Power Dissipation
To p Operating Junction Temperature Range (for L7800) (for L7800C)
Tstg Storage Temperature Range
Value
Unit
35
V
40
V
Io = 5 mA to 1 A Po ≤ 15 W Vi = 8 to 20 V Vi = 7 to 25 V Tj = 25 oC Vi = 8 to 12 V Tj = 25 oC
Io = 5 to 1500 mA Tj = 25 oC Io = 250 to 750 mA Tj = 25 oC
Tj = 25 oC
4.65
5
5.35
3
50
1
25
100 25
6
∆Id Quiescent Current Change Io = 5 to 1000 mA
0.5
∆Id Quiescent Current Change Vi = 8 to 25 V
0.8
∆Vo Output Voltage Drift
Tj = 25 oC
5.65
6
6.35
60 30
100 30
6
∆Id Quiescent Current Change Io = 5 to 1000 mA
0.5
∆Id Quiescent Current Change Vi = 9 to 25 V
0.8
∆Vo Output Voltage Drift ∆T
5/25
元器件交易网
L7800
ELECTRICAL CHARACTERISTICS FOR L7808 (refer to the test circuits, Tj = -55 to 150 oC, Vi = 14V, Io = 500 mA, Ci = 0.33 µF, Co = 0.1 µF unless otherwise specified)
68
2
2.5
Ro Output Resistance Isc Short Circuit Current Is cp Short Circuit Peak Current
f = 1 KHz
Vi = 35 V Tj = 25 oC
Tj = 25 oC
17
0.75 1.2
1.32Βιβλιοθήκη 23.3Unit V V
ELECTRICAL CHARACTERISTICS FOR L7805 (refer to the test circuits, Tj = -55 to 150 oC, Vi = 10V, Io = 500 mA, Ci = 0.33 µF, Co = 0.1 µF unless otherwise specified)
eN Output Noise Voltage
Io = 5 mA B = 10Hz to 100KHz Tj = 25 oC
0.7 40
SVR Supply Voltage Rejection Vd Dropout Voltage
Vi = 9 to 19 V f = 120 Hz
Io = 1 A
Tj = 25 oC
Io = 5 mA to 1 A Po ≤ 15 W Vi = 9 to 21 V Vi = 8 to 25 V Tj = 25 oC Vi = 9 to 13 V Tj = 25 oC
Io = 5 to 1500 mA Tj = 25 oC Io = 250 to 750 mA Tj = 25 oC
L7818CD2T
L7820CD2T
L7824CD2T
(*) AVAILABLE IN TAPE AND REEL WITH ”-TR” SUFFIX
D2PAK
ISOWATT 220
L7805CP L7852CP L7806CP L7808CP L7885CP L7809CP L7812CP L7815CP L7818CP L7820CP L7824CP
Symbol
Parameter
Vo Output Voltage
Test Conditions Tj = 25 oC
Min. 4.8
Typ. 5
Max. 5.2
Vo Output Voltage ∆Vo* Line Regulation ∆Vo* Load Regulation
Id Quiescent Current
mV mV mV mV mA mA mA mV/oC
µV/VO dB V mΩ A A
ELECTRICAL CHARACTERISTICS FOR L7806 (refer to the test circuits, Tj = -55 to 150 oC, Vi = 15V, Io = 500 mA, Ci = 0.33 µF, Co = 0.1 µF unless otherwise specified)
L7805CV L7852CV
L7806CV
L7808CV L7885CV L7809CV
L7812CV
L7815CV
L7818CV
L7820CV
L7824CV
L7805CD2T L7852CD2T
L7806CD2T
L7808CD2T L7885CD2T L7809CD2T
L7812CD2T
L7815CD2T
3/25
元器件交易网
L7800
TEST CIRCUITS Figure 1 : DC Parameter
Figure 2 : Load Regulation.
Figure 3 : Ripple Rejection.
4/25
元器件交易网
L7800
DESCRIPTION The L7800 series of three-terminal positive regulators is available in TO-220 ISOWATT220 TO-3 and D2PAK packages and several fixed output voltages, making it useful in a wide range of applications.These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each type employs internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents.
Output Voltage
5V 5V 5.2V 6V 6V 8V 8V 8.5V 9V 12V 12V 15V 15V 18V 18V 20V 20V 24V 24V
2/25
元器件交易网
APPLICATION CIRCUIT
SCHEMATIC DIAGRAM
L7800
Io = 5 mA
0.6
∆T
eN Output Noise Voltage
B = 10Hz to 100KHz Tj = 25 oC
40
SVR Supply Voltage Rejection Vd Dropout Voltage
Vi = 8 to 18 V f = 120 Hz
Io = 1 A
Tj = 25 oC
Symbol
Parameter
Vo Output Voltage
Test Conditions Tj = 25 oC
Min. 7.7
Typ. 8
Max. 8.3
Vo Output Voltage ∆Vo* Line Regulation ∆Vo* Load Regulation
D2PAK
3 62.5
TO-220
3 50
ISOWATT220
4 60
TO-3
4 35
Unit
oC/W oC/W
CONNECTION DIAGRAM AND ORDERING NUMBERS (top view)