LTC4217中文资料

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LTV817中文资料

IF=5mA, VCE=5V RBE=
IF=20mA, IC=1mA DC500V, 40~60% R.H. V=0, f=1MHz VCE=5V, IC=2mA RL=100 , -3dB VCE=2V, IC=2mA RL=100
CTR(%) 50~100 80~160 130~260 200~400 300~600 50~600
*2. For 10 seconds.
Unit mA V mW V V mA mW mW
KVrms
Electrical/Optical Characteristics
(Ta=25 )
Input
Output
Parameter
Forward Voltage
Reverse Current
Terminal Capacitance
8-pin DIP 8-pin (leads with 0.4" spacing) 8-pin (lead bends for surface mount) 8-pin (tape and reel packaging of type I) 8-pin (tape and reel packaging of type II)
元器件交易网
High Density Mounting Type Photocoupler
LTV-817 Series
Features
Current transfer ratio (CTR : MIN. 50% at IF=5mA, VCE=5V) High input-output isolation voltage: (VISO : 5,000Vrms) Compact dual-in-line package LTV-817 : 1-channel type LTV-827 : 2-channel type LTV-847 : 4-channel type UL approved (No. E113898) TUV approved (No. R9653630) CSA approved (No. CA91533-1) FIMKO approved (No. 202634) NEMKO approved (No. P98101945) DEMKO approved (No. 307857) SEMKO approved (No. 9832157/01-03) VDE approved (No. 094722) Options available : -Leads with 0.4"(10.16mm)spacing (M Type) -Leads bends for surface mounting(S Type) -Tape and Reel of Type I for SMD(Add"-TA"Suffix) -Tape and Reel of Type II for SMD(Add"-TA1"Suffix) -VDE 0884 approvals (Add"-V"Suffix)

tle 4207中文资料

VUV ON –
6.5 7.5 V
VUV OFF 5.0 6
–
V
VUV HY –
0.5 – V
VOV OFF –
20 24 V
VOV ON 18.0 19.5 –
V
VOV HY –
0.5 – V
VS increasing VS decreasing VUV ON – VUV OFF VS increasing VS decreasing VOV OFF – VOV ON
Functional Truth Table
INH
IN1
IN2
0
X
X
1
0
0
1
0
1
1
1
0
1
1
1
OUT1
Z
L L H H
OUT2
Z
L H L H
Mode
Stand-By
Brake LL CW CCW Brake HH
IN: 0 = Logic LOW 1 = Logic HIGH X = don’t care
Current Consumption
Quiescent current
IS
Quiescent current
IS
Supply current
IS
Supply current
IS
Supply current
IS
–
20 50 µA INH = LOW
–
20 30 µA INH = LOW;
VS = 13.2 V; Tj = 25 °C
Data Sheet
1
1999-10-07
TLE 4207

LTC4266A／4274A：供电控制器

LTC4266A／4274A：供电控制器
佚名
【期刊名称】《世界电子元器件》
【年(卷),期】2011(000)009
【摘要】凌力尔特公司推出面向供电设备（PSE）的4端1：3和单端VI以太网
供电（PoE）控制器LTC4266A和LTC4274A，可向受电设备（PD）提供90W
的功率，实现了高功率PoE应用，包括长距离无线接入点（WAP）、瘦客户机等。

【总页数】1页(P35-35)
【正文语种】中文
【中图分类】TN86
【相关文献】
1.AT供电系统同相供电PR控制器设计 [J], 马庆安;李群湛;解绍锋;徐英雷
2.基于双星型多电平潮流控制器与YNvd变压器的同相供电系统 [J], 周净轩;罗隆福;王海龙
3.中压配电网双电源供电智能控制器的研究 [J], 赵亮
4.供电网络对CRH5型动车组内外端门控制器的影响分析 [J], 黄常维
5.Silicon Laboratories推出高集成度以太网络供电控制器——Si3400代表公司
正式进入成长中的以太网络供电市场 [J],
因版权原因，仅展示原文概要，查看原文内容请购买。

LTC4068XEDD-4.2#PBF资料

12406842fa(Note 1)Input Supply Voltage (V CC )....................... –0.3V to 10V PROG, ITERM................................ –0.3V to V CC + 0.3V BAT............................................................. –0.3V to 7V CHRG, ACPR, EN...................................... –0.3V to 10V BAT Short-Circuit Duration.......................... Continuous BAT Pin Current........................................................ 1A PROG Pin Current...................................................1mA Maximum Junction Temperature..........................125°C Operating Temperature Range (Note 2)..–40°C to 85°C Storage Temperature Range.................–65°C to 125°CT JMAX = 125°C, θJA = 40°C/W (NOTE 3)EXPOSED PAD IS GROUND (PIN 9)MUST BE SOLDERED TO PCBORDER PART NUMBER DD PART MARKINGLBHZ LBQBSYMBOL PARAMETER CONDITIONSMIN TYP MAX UNITSV CC Input Supply Voltage ● 4.256.5V I CCInput Supply CurrentCharge Mode (Note 4), R PROG = 10k ●0.41mA Standby Mode (Charge Terminated)●200500µA Shutdown Mode (EN = 5V, V CC < V BAT ●2550µA or V CC < V UV )V FLOAT Regulated Output (Float) Voltage 0°C ≤ T A ≤ 85°C, 4.3V < V CC < 6.5V 4.158 4.2 4.242V I BATBAT Pin CurrentR PROG = 10k, Current Mode ●92100105mA R PROG = 2k, Current Mode ●465500535mA Standby Mode, V BAT = 4.2V●–2.5–6µA Shutdown Mode (EN = 5V, V CC < V BAT or ±1±2µA V CC < V UV )Sleep Mode, V CC = 0V±1±2µA I TRIKL Trickle Charge Current V BAT < V TRIKL , R PROG = 2k (Note 5)●304560mA V TRIKL Trickle Charge Threshold Voltage R PROG = 10k, V BAT Rising (Note 5) 2.8 2.93V V TRHYS Trickle Charge Hysteresis Voltage R PROG = 10k (Note 5)80mV V UV V CC Undervoltage Lockout Voltage From V CC Low to High● 3.7 3.8 3.92V V UVHYS V CC Undervoltage Lockout Hysteresis ●150200300mV V EN(IL)EN Pin Input Low Voltage ●0.40.7V V EN(IH)EN Pin Input High Voltage ●0.71V R EN EN Pin Pull-Down Resistor ● 1.225M ΩV ASD V CC – V BAT Lockout Threshold V CC from Low to High 70100140mV V CC from High to Low 53050mV I TERM Charge Termination Current Threshold R TERM = 1k ●90100110mA R TERM = 5k●17.52022.5mA V PROG PROG Pin VoltageR PROG = 10k, Current Mode 0.931 1.07V V CHRG CHRG Pin Output Low Voltage I CHRG = 5mA 0.350.6V V ACPR ACPR Pin Output Low Voltage I ACPR = 5mA0.350.6V ∆V RECHRGRecharge Battery Threshold VoltageV FLOAT – V RECHRG , 0°C ≤ T A ≤ 85°C60100140mVThe ● denotes specifications which apply over the full operatingtemperature range, otherwise specifications are at T A = 25°C. V CC = 5V, unless otherwise noted.ABSOLUTE AXI U RATI GSW W WU PACKAGE/ORDER I FOR ATIOU U WELECTRICAL CHARACTERISTICSConsult LTC Marketing for parts specified with wider operating temperature ranges.LTC4068EDD-4.2LTC4068XEDD-4.2TOP VIEW9DD PACKAGE8-LEAD (3mm × 3mm) PLASTIC DFN56784321ITERM BAT CHRG GND EN ACPR V CC PROG34567406842faOPERATIOThe LTC4068 is a single cell lithium-ion battery charger using a constant-current/constant-voltage algorithm. It can deliver up to 950mA of charge current (using a good thermal PCB layout) with a final float voltage accuracy of ±1%. The LTC4068 includes an internal P-channel power MOSF ET and thermal regulation circuitry. No blocking diode or external current sense resistor is required; thus,the basic charger circuit requires only two external com-ponents. Furthermore, the LTC4068 is capable of operat-ing from a USB power source.Normal Charge CycleA charge cycle begins when the voltage at the V CC pin rises above the UVLO threshold level and a 1% program resistor is connected from the PROG pin to ground. If the BAT pin is less than 2.9V, the charger enters trickle charge mode.In this mode, the LTC4068 supplies approximately 1/10th the programmed charge current to bring the battery volt-age up to a safe level for full current charging. (Note: The LTC4068X does not include this trickle charge feature.)When the BAT pin voltage rises above 2.9V, the charger enters constant-current mode where the programmed charge current is supplied to the battery. When the BAT pin approaches the final float voltage (4.2V), the LTC4068enters constant-voltage mode and the charge current begins to decrease. When the charge current drops to the programmed termination threshold (set by the external resistor R TERM ), the charge cycle ends.Programming Charge CurrentThe charge current is programmed using a single resistor from the PROG pin to ground. The charge current out of the BAT pin is 1000 times the current out of the PROG pin.The program resistor and the charge current are calcu-lated using the following equations:R V I I VR PROG CHG CHG PROG==10001000,Charge current out of the BAT pin can be determined at anytime by monitoring the PROG pin voltage and using the following equation:I VR BATPROG PROG=•1000Programming Charge TerminationThe charge cycle terminates when the charge current falls below the programmed termination threshold. This threshold is set by connecting an external resistor, R TERM ,from the ITERM pin to ground. The charge termination current threshold (I TERM) is set by the following equation:I V R I R R R VI TERM TERM CHG PROG TERM TERM TERM===10010100•,The termination condition is detected by using an internalfiltered comparator to monitor the ITERM pin. When the ITERM pin voltage drops below 100mV * for longer than t TERM (typically 1ms), charging is terminated. The charge current is latched off and the LTC4068 enters standby mode where the input supply current drops to 200µA.(Note: Termination is disabled in trickle charging and thermal limiting modes.)I TERM can be set to be 1/10th of I CHG by shorting the ITERM pin to the PROG pin, thus eliminating the need for external resistor R TERM . When configured in this way, I TERM is always set to I CHG /10, and the programmed charge current is set by the equation:I V R R V I CHG PROG PROG CHG==500500,**When charging, transient loads on the BAT pin can cause the ITERM pin to fall below 100mV for short periods of time before the DC charge current has dropped to 10% of the programmed value. The 1ms filter time (t TERM ) on the termination comparator ensures that transient loads of this nature do not result in premature charge cycle termi-nation. Once the average charge current drops below the programmed termination threshold, the LTC4068 termi-nates the charge cycle and ceases to provide any current out of the BAT pin. In this state, any load on the BAT pin must be supplied by the battery.The LTC4068 constantly monitors the BAT pin voltage in standby mode. If this voltage drops below the 4.1V rechargeAny external sources that hold the ITERM pin above 100mV will prevent the LTC4068 from terminating a charge cycle.These equations apply only when the ITERM pin is shorted to the PROG pin.***8910Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.1112LTC4068-4.2/LTC4068X-4.2LT/TP 0904 1K REV A • PRINTED IN USA© LINEAR TECHNOLOGY CORPORA TION 2004Linear Technology Corporation1630 McCarthy Blvd., Milpitas, CA 95035-7417(408) 432-1900 ● FAX: (408) 434-0507 ● 。

LT4254资料

UNITS V mA V V µA µA V V µA mV V V µA mV mV µA µA mA V V V V V V V
4254f
VCC Low-to-High Transition UV = 4.5V UV = 0V VCC Low-to-High Transition 0V ≤ OV < 6.5V
The LT®4254 is a high voltage Hot Swap controller that allows a board to be safely inserted and removed from a live backplane. An internal driver controls the high side N-channel MOSFET gate for supply voltages ranging from 10.8V to 36V. The part features an open-circuit detect (OPEN) output that indicates abnormally low load current conditions. The LT4254 features an adjustable analog foldback current limit. If the supply remains in current limit for more than a programmable time, the N-channel MOSFET shuts off, the PWRGD output goes low and the LT4254 either automatically restarts after a time-out delay or latches off until the UV pin is cycled low. The RETRY pin sets whether the part will automatically restart after an overcurrent fault or if it will latch off until the UV pin is cycled low. The PWRGD output indicates when the output voltage rises above a programmed level. An external resistor string from VCC provides programmable undervoltage and overvoltage protection. The LT4254 is available in a 16-lead SSOP package.

LM317中文资料大全

LM317中文资料大全LM117/LM317简介LM117/LM317是美国国家半导体公司的三端可调正稳压器集成电路。

我国和世界各大集成电路生产商均有同类产品可供选用，是使用极为广泛的一类串联集成稳压器。

LM117/LM317 的输出电压范围是1.2V 至37V，负载电流最大为1.5A。

它的使用非常简单，仅需两个外接电阻来设置输出电压。

此外它的线性调整率和负载调整率也比标准的固定稳压器好。

LM117/LM317 内置有过载保护、安全区保护等多种保护电路。

通常LM117/LM317 不需要外接电容，除非输入滤波电容到 LM117/LM317 输入端的连线超过6 英寸（约 15 厘米）。

使用输出电容能改变瞬态响应。

调整端使用滤波电容能得到比标准三端稳压器高的多的纹波抑制比。

LM117/LM317 能够有许多特殊的用法。

比如把调整端悬浮到一个较高的电压上，可以用来调节高达数百伏的电压，只要输入输出压差不超过 LM117/LM317 的极限就行。

当然还要避免输出端短路。

还可以把调整端接到一个可编程电压上，实现可编程的电源输出。

LM117负电压输出LM317正电压输出LM317特性简介可调整输出电压低到1.2V保证1.5A 输出电流典型线性调整率0.01%典型负载调整率0.1%80dB纹波抑制比输出短路保护过流、过热保护调整管安全工作区保护标准三端晶体管封装电压范围LM117/LM317 1.25V 至 37V 连续可调图1 LM317典型应用电路图2 LM317外形引脚图片典型的TO-3封装TO-220封装ISOWATT220封装D2PAK封装LM117LM117KLM217LM217K LM217TLM217D2TLM317LM317K LM317T LM317PLM317D2TLM317电气参数：5℃S VR电源电压抑制Tj=25℃ f=120HzCADJ =6665 -80 -dBCADJ=10uF80 -6680-dBLM317如何应用计算图3决定LM317输出电压的是电阻R1,R2的比值,假设R2是一个固定电阻.因为输出端的电位高,电流经R1, R2流入接地点. LM317的控制端消耗非常少的电流,可忽略不计.所以, 控制端的电位是I x R2,又因为LM 317 控制端, 输出端接脚间的电位差为1.25 V,所以Out(输出）的电压是:接下来,计算I: out与adj接脚间的电位差为1.25 V,电阻R1.电流I是: 1.25/R1。

IRS2117PBF中文资料

Features•Floating channel designed for bootstrap operation •Fully operational to +600 V•Tolerant to negative transient voltage, dV/dt immune•Gate drive supply range from 10 V to 20V •Undervoltage lockout•CMOS Schmitt-triggered inputs with pull-down •Output in phase with input (IRS2117) or out of phase with input (IRS2118)•RoHS compliantSINGLE CHANNEL DRIVERProduct SummaryV OFFSET 600 V max.I O +/-200 mA / 420 mA V OUT 10 V - 20 V t on/off (typ.)125 ns & 105 nsPackages8-Lead PDIP IRS2117/IRS21188-L ead SOIC IRS2117S/IRS2118SIRS2117/IRS2118(S)PbF 1DescriptionThe IRS2117/IRS2118 are a high voltage, high speed power MOSFET and IGBT driver. Proprietary HVIC and latch immune CMOS technologies enable ruggedized monolithic construction. The logic input is compatible with standard CMOS outputs. The output driver fea-tures a high pulse current buffer stage designed for minimum cross-conduction. The floating channel can be used to drive an N-channel power MOSFET or IGBT in the high-side or low-side configuration which oper-ates up to 600 V.Data Sheet No. PD60227 2IRS2117/IRS2118(S)PbFAbsolute Maximum RatingsAbsolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage param-eters are absolute voltages referenced to COM. The thermal resistance and power dissipation ratings are measured Note 1: L ogic operational for V S of -5 V to +600 V. L ogic state held for V S of -5 V to -V BS . (Please refer to the Design Tip DT97-3 for more details).Recommended Operating ConditionsThe input/output logic timing diagram is shown in Fig. 1. For proper operation the device should be used within the recommended conditions. The V S offset rating is tested with all supplies biased at 15 V differential.IRS2117/IRS2118(S)PbF 3Dynamic Electrical CharacteristicsV BIAS (V CC , V BS ) = 15 V, C L = 1000 pF and T A = 25 °C unless otherwise specified. The dynamic electrical characteristics are measured using the test circuit shown in Fig. 3.Static Electrical CharacteristicsV BIAS (V CC , V BS ) = 15 V and T A = 25 °C unless otherwise specified. The V IN , V TH, and I IN parameters are referenced to COM. The V O and I O parameters are referenced to COM and are applicable to the respective output leads: HO or LO.IRS2117/IRS2118(S)PbF Functional Block Diagram (IRS2117)Functional Block Diagram (IRS2118)4IRS2117(S)/IRS2118(S)5Lead DefinitionsSymbolDescriptionV CC Logic and gate drive supplyINLogic input for gate driver output (HO), in phase with HO (IRS2117)IN Logic input for gate driver output (HO), out of phase with HO (IRS2118)COM Logic groundV B High -side floating supply HO High -side gate drive output V SHigh -side floating supply returnLead Assignments8 Lead PDIP 8 Lead SOICIRS2118IRS2118S12348765V CC IN COMV B HO VS12348765V CC IN COMV B HO V S8 Lead PDIP 8 Lead SOICIRS2117IRS2117S12348765V CC IN COMV B HO V S12348765V CC IN COMV B HO V S 6IRS2117/IRS2118(S)PbFFigure 1. Input/Output Timing Diagram Figure 3. Switching Time Test Circuit Figure 4. Switching Time Waveform DefinitionFigure 2. Floating Supply Voltage Transient Test CircuitIN(IRS2117)HOIN(IRS2118)IRS2117IRS2118<50 V/nsIRS2117IRS2118IRS2117/IRS2118(S)PbF7IRS2117/IRS2118(S)PbF8IRS2117/IRS2118(S)PbF9 10IRS2117/IRS2118(S)PbFIRS2117/IRS2118(S)PbF112004006008001000101214161820V BS Supply Voltage (V)V B S S u p p l y C u r r e n t (µA )Figure 14B. V BS Supply Currentvs. Supply VoltageIRS2117/IRS2118(S)PbF20406080100120-50 -25 0 25 50 75 100 125Logic"1"InputCurrent(µA)Figure 16A. Logic "1" (IRS2118 Logic"0")Input Current vs. TemperatureTemperature (o C)12IRS2117/IRS2118(S)PbF 13IRS2117/IRS2118(S)PbF14IRS2117/IRS2118(S)PbF15()t () 16IRS2117/IRS2118(S)PbFFigure 26. IRS2117/IRS2118 T J vs.Frequency (IRFBC40)R GATE = 15 Ω, V CC = 15 V Figure 27. IRS2117/IRS2118 T J vs.Frequency (IRFPE50)R GATE = 10 Ω, V CC = 15 VFigure 24. IRS2117/IRS2118 T J vs.Frequency (IRFBC20)R GATE = 33 Ω, V CC = 15 V Figure 25. IRS2117/IRS2118 T J vs.Frequency (IRFBC30)R GATE = 22 Ω, V CC = 15 V02550751001251501E+21E+31E+41E+51E+6Frequency (Hz)J u n c t i o n T e m p e r a t u r e (oC )320 V140 V10 V2550751001251501E+21E+31E+41E+51E+6Frequency (Hz)J u n c t i o n T e m p e r a t u r e (oC )320 V 140 V10 V02550751001251501E+21E+31E+41E+51E+6Frequency (Hz)J u n c t i o n T e m p e r a t u r e (oC )320 V 140 V 10 V2550751001251501E+21E+31E+41E+51E+6Frequency (Hz)J u n c t i o n T e m p e r a t u r e (oC )320 V 140 V10 VCase outlines 18IRS2117/IRS2118(S)PbFCTape & Reel8-Lead SOICIRS2117/IRS2118(S)PbF19ORDER INFORMATION8-LeadPDIPIRS2117PbF 8-Lead PDIP IRS2118PbF 8-Lead SOIC IRS2117SPbF 8-Lead SOIC IRS2118SPbFLEADFREE PART MARKING INFORMATIONPer SCOP 200-002IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 Tel: (310) 252-7105The SOIC-8 is MSL 2 qualified.This product has been designed and qualified for the industrial level.Qualification standards can be found at Data and specifications subject to change without notice. 11/20/20068-Lead SOIC Tape & Reel IRS2117STRPbF 8-Lead SOIC Tape & Reel IRS2118STRPbF。

CLL4717中文资料

DESCRIPTION:The CENTRALSEMICONDUCTOR CLL4678Series Silicon Low Level Zener Diode is a highquality voltage regulator designed for applicationsrequiring an extremely low operating current andlow leakage.

ABSOLUTE MAXIMUM RATINGS:SYMBOLUNITPower Dissipation (@TA=25°C)PD500mW

Operating and Storage TemperatureTJ,Tstg-65 to +200°C

ELECTRICALCHARACTERISTICS: (TA=25°C), VF=1.5V MAX @ IF=100mAFOR ALLTYPES.

CLL4678THRU CLL4717

LOW LEVELZENER DIODE1.8 VOLTS THRU 43 VOLTS500mW, 5% TOLERANCE

SOD-80CASE

CentralSemiconductor Corp.TM

ZENERTESTMAXIMUM MAXIMUMMAXIMUMTYPEVOLTAGECURRENTREVERSE LEAKAGE VOLTAGEZENERVZ@ IZTCURRENTCHANGE**CURRENT

MIN NOM MAXIZTIR@ VR∆VZIZM

VOLTS VOLTS VOLTS µAµAVOLTSVOLTSmACLL46781.7101.81.890507.51.00.70120.0CLL46791.9002.02.100505.01.00.70110.0 CLL46802.0902.22.310504.01.00.75100.0CLL46812.2802.42.520502.01.00.8095.0 CLL46822.5652.72.835501.01.00.8590.0 CLL46832.8503.03.150500.81.00.9085.0 CLL46843.1353.33.465507.51.50.9580.0 CLL46853.4203.63.780507.52.00.9575.0 CLL46863.7053.94.095505.02.00.9770.0 CLL46874.0854.34.515504.02.00.9965.0 CLL46884.4654.74.93550103.00.9960.0 CLL46894.8455.15.35550103.00.9755.0CLL46905.3205.65.88050104.00.9650.0CLL46915.8906.26.51050105.00.9545.0CLL46926.4606.87.14050105.10.9035.0CLL46937.1257.57.87550105.70.7531.8CLL46947.7908.28.610501.06.20.5029.0CLL46958.2658.79.135501.06.60.1027.4CLL46968.6459.19.555501.06.90.0826.2** ∆VZ=VZ@ 100µAMINUS VZ@ 10µAR4 ( 4-October 2001)

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LTC4217FE
20-Lead Plastic TSSOP
0°C to 70°C
LTC4217IFE#PBF
LTC4217IFE#TRPBF
LTC4217FE
20-Lead Plastic TSSOP
–40°C to 85°C
LEAD BASED FINISH
TAPE AND REEL
PART MARKING*
TYPICAL APPLICATION
12V, 1.5A Card Resident Application
12V
VDD
OUT
+
VOUT 12V
UV
12V
330μF 1.5A
AUTO RETRY
LTC4217DHC-12
10k
FLT
PG
0.1μF
TIMER
INTVCC
IMON
GND
20k
ADC
4217 TA01a
PACKAGE/ORDER INFORMATION
TOP VIEW
VDD 1 UV 2 OV 3 TIMER 4 INTVCC 5 GND 6 OUT 7 OUT 8
16 VDD 15 ISET 14 IMON 13 FB 17 12 FLT 11 PG 10 GATE 9 OUT
DHC PACKAGE 16-LEAD (5mm s 3mm) PLASTIC DFN
元器件交易网
FEATURES
n Small Footprint n 25mΩ MOSFET and 7.5mΩ RSENSE n Wide Operating Voltage Range: 2.9V to 26.5V n Adjustable, 5% Accurate Current Limit n Current and Temperature Monitor Outputs n Overtemperature Protection n Adjustable Current Limit Timer Before Fault n Powergood and Fault Outputs n Adjustable Inrush Current Control n 2% Accurate Undervoltage and Overvoltage
GATE (Note 3)............ –0.3V to 33V Operating Temperature Range
LTC4217C ................................................ 0°C to 70°C LTC4217I.............................................. –40°C to 85°C Junction Temperature (Notes 4, 5)........................ 125°C Storage Temperature Range DHC Package ..................................... –65°C to 125°C FE Package ........................................ –65°C to 150°C Lead Temperature (Soldering, 10 sec) FE Package Only ............................................... 300°C
TJMAX = 125°C, θJA = 43°C/W EXPOSED PAD (PIN 17) IS SENSE, θJA = 43°C/W SOLDERED, OTHERWISE θJA = 140°C/W
TOP VIEW
SENSE 1
20 SENSE
VDD 2 UV 3 OV 4 TIMER 5 INTVCC 6 GND 7
–40°C to 85°C
LTC4217CFE
LTC4217CFE#TR
LTC4217FE
20-Lead Plastic TSSOP
0°C to 70°C
LTC4217IFE
LTC4217IFE#TR
LTC4217FE
20-Lead Plastic TSSOP
–40°C to 85°C
Consult LTC Marketing for parts speciﬁed with wider operating temperature ranges. *The temperature grade is identiﬁed by a label on the shipping container.
For more information on lead free part marking, go to: /leadfree/ For more information on tape and reel speciﬁcations, go to: /tapeandreel/
16-Lead (5mm × 3mm) Plastic DFN
0°C to 70°C
LTC4217IDHC-12#PBF LTC4217IDHC-12#TRPBF 421712
16-Lead (5mm × 3mm) Plastic DFN
–40°C to 85°C
LTC4217CDHC#PBF
LTC4217CDHC#TRPBF 4217
DESCRIPTION
The LTC®4217 is an integrated solution for Hot Swap™ applications that allows a board to be safely inserted and removed from a live backplane. The part integrates a Hot Swap controller, power MOSFET and current sense resistor in a single package for small form factor applications. A dedicated 12V version (LTC4217-12) contains preset 12V speciﬁc thresholds, while the standard LTC4217 allows adjustable thresholds.
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC4217CDHC-12
LTC4217CDHC-12#TR 421712
16-Lead (5mm × 3mm) Plastic DFN
0°C to 70°C
LTC4217IDHC-12
LTC4217IDHC-12#TR 421712
4217fb
2
元器件交易网
LTC4217
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC4217CDHC-12#PBF LTC4217CDHC-12#TRPBF 421712
The LTC4217 provides separate inrush current control and an accurate (5%) 2A current limit with current foldback limiting. The current limit threshold can be adjusted dynamically using an external pin. Additional features include a current monitor output that ampliﬁes the sense resistor voltage for ground referenced current sensing and a MOSFET temperature monitor output. Thermal limit, overvoltage, undervoltage and powergood monitoring are also provided.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Hot Swap is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.
19 VDD 18 ISET 17 IMON 16 FB 21 15 FLT
14 PG
OUT 8
13 GATE
OUT 9
12 OUT
SENSE 10
11 SENSE
FE PACKAGE 20-LEAD PLASTIC TSSOP
TJMAX = 125°C, θJA = 38°C/W EXPOSED PAD (PIN 21) IS SENSE, θJA = 38°C/W SOLDERED, OTHERWISE θJA = 130°C/W
Protection n Available in 20-Lead TSSOP and 16-Lead
5mm × 3mm DFN Packages
APPLICATIONS
n RAID Systems n Server I/O Cards n Industrial
LTC4217
2A Integrated Hot Swap Controller