BDR6611-5通道直流 步进马达驱动芯片

BDR66115CH Motor Driver +1CH LED DriverDESCRIPTIONThe BDR6611 is a driver IC for 5CH motor driver and1CH LED Driver.1~2CH and 3~4CH canseparately drive a 5 lines stepping motor, 5CH can drive a IR-Cut or DC motor, and 6CH can drive a LED for constant current or constant voltage mode.FEATURES∙ It is low consumption by BCD process adoption.∙ Package ：SSOP24∙ power-supply voltage range:2.7V~5.5V∙ Driving 2 stepping motors, a DC motor, and a LED at the same time.∙ Operating temperature range: -40 to +85°C. ∙ Max. input frequency: 200KHz. ∙ Built-in protection circuits:- Shoot-through current protection - Under voltage lock out(UVLO)APPLICATION∙ Internal PT cameraBLOCK DIAGRAMIN0CH OUT5A VDDENIN1APPLICATION CIRCUITSNote: Customers can choose the solutions of photosensitive voltage detection according to requirement: 1）The ADC of MCU detects point A accurately, then connects to Pin IN1;2）Point A connects to Pin IN1 directly.ORDER INFORMATIONPIN CONFIGURATIONSSOP 24DRBCLKA CLKB EN CH IN 0IN1IN2IN3OUT5B VDD OUT5ADRA OUT1A OUT1B OUT2A OUT2B OUT3A OUT3B OUT4A OUT4B OUT6RNF GNDPIN DESCRIPTIONEXTERNAL LOGIC CONTROL5 LINES STEPPING MOTOR LOGIC CONTROL MODE(1~4CH)Stepping motor connected to OUT1A~OUT2B runs clockwise or counter clockwise is controlled by DRA level, and the speed depends on the frequency of CLKA; Similarly, stepping motor connected to OUT3A~OUT4B runs clockwise or counter clockwise is controlled by DRB level, and the speed depends on the frequency of CLKB.INPUT-OUTPUT LOGIC TABLE:Note1: Z: Hi impedance, outputs off;Note2: CW: OUT1A~OUT2B or OUT3A~OUT4B work follows the logic of figure 1, and stepping motor works clockwise; CCW: OUT1A~OUT2B or OUT3A~OUT4B work follows the logic of figure 2, and stepping motor works counterclockwise. Note3: 1~2CH and 3~4CH can be independently controlled by their respective control signalsCW: stepping motor works clockwiseFigure 1 CWCCW: stepping motor works counterclockwiseFigure 2 CCWNote1: Z: Hi impedance, outputs off;Note2: *=A, BLEDCONTROL MODE (OUT6)1) LED constant current output modeThe current of LED is determined by the resistance RNF, and calculate the current as:Iload=0.5(A)Example: When Rnf=10Ω, the current will be 0.5V/10Ω = 50mA.Note: The maximum current to drive LED cannot exceed 0.3A.2) LED constant voltage output modeWhen the resistance RNF=0Ω, LED works on constant voltage output mode.INPUT-OUTPUT LOGIC TABLE:3) IR-Cut or DC motor driverOUT5A and OUT5B are controlled by IN2 and IN3.INPUT-OUTPUT LOGIC TABLE:PROTECTION FUNCTIONUNDER VOLTAGE LOCKOUT (UVLO) CIRCUITThe BDR6611 includes an under voltage lockout circuit, which puts the output transistors in the high-impedance state when VDD decreases to1.8V (typ.) or lower.The output transistors are automatically turned on when VDD increases past the lockout threshold ,which is raised to 2.0V by a hysteresis of 0.2V.SHOOT-THROUGH CURRENT PROTECTIONDuring Dead Time (Shoot through current circuit is operated.), Power MOS both of HI side and Low side are turned off. But in this time, internal parasitic diode is turned on according to current direction.ABSOLUTE MAXIMUM RATINGSThe package thermal impedance for SSOP24 is calculated in accordance with JEDEC, 2S2P test PCB, Rja=76.6℃/W. RECOMMENDED OPERATION CONDITIONSELECTRICAL CHARACTERISTICSELECTRICAL CHARACTERISTICSSWITCHING CHARACTERISTICS WAVEFORMOUT*90%10%Tff90%10%Trr100%100%OUT* = OUT1A ~ OUT4BFig.3 switching characteristics waveform 1IN2IN3100%50%50%100%TfONHTfOFFHIload90%50%10%-90%-50%-10%TffTfr100%50%50%100%TrONHTrOFFH90%50%10%-90%-50%-10%TrrTrf100%-100%-100%100%Electric current in the OUT5A —OUT5B direction is being made (+)=forward rotationFig.4 switching characteristics waveform 2IN2IN3100%50%TfONHTfOFFHIload90%50%10%Tff100%50%TrONH90%50%10%Trr 100%100%Electric current in the OUT5A —OUT5B direction is being made (+)=forward rotationFig.5 switching characteristics waveform 3PACKAGE INFORMATION SSOP24-150mil。