SOT-26__TPD4S009DBVRG4.pdf
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1、LOW CAPACITANCE TVS DIODE ARRAY Features Ultra low leakage:nA levelOperating voltage:5VLow clamping voltageComplies with following standards:IEC 61000-4-2(ESD)immunity testAir discharge:20kV Contact discharge:20kV IEC61000-4-4(EFT)40A(5/50ns)IEC61000-4-5(Lightning)5A(8/20 s)RoHS CompliantApplication
2、s USB 2.0 power and data lineSet-top box and digital TVDigital video interface(DVI)Notebook ComputersSIM Ports10/100/1000 Ethernet Dimensions SOT-26 Pin Configuration Mechanical Characteristics Package:SOT-26Lead Finish:Lead FreeUL Flammability Classification Rating 94V-0Quantity Per Reel:3,000pcsRe
3、el Size:7inchAbsolute Maximum Ratings(Tamb=25C unless otherwise specified)Parameter Symbol Value Unit Peak Pulse Power(8/20s)Ppp350WESD per IEC 6100042(Air)VESD 20KvESD per IEC 6100042(Contact)20 Operating Temperature Range TJ-55 to+125 Storage Temperature Range TSTJ-55 to+150 Rev:01.06.2014 1/7AEC-
4、Q101 qualified.Device Marking:V05 TPD4S009DBVRG4 Electrical Characteristics(TA=25C unless otherwise specified)Characteristic Curves Fig1.8/20s Pulse Waveform051015202530120tr100806040200Peak Value IPPtd=t IPP/2TESTWAVEFORMPARAMETERStr=8 std=20 st-Time(s)IPP-Peak Pulse Current-%of IPPFig3.Power Derat
5、ing Curve0255075100125150110100403020100%of Rated Power9080706050Ambient Temperature TA(C)Fig2.ESD Pulse Waveform(according to IEC 61000-4-2)60ns10%Percent of Peak Pulse Current%30nstr=0.71nsTime(ns)90%100%Rev:01.06.2014 2/7Parameter Symbol Min Typ Max Unit Test Condition Reverse Working Voltage VRW
6、M 5 V Breakdown Voltage VBR 6 V IT=1mA Reverse Leakage Current IR 1 A VRWM=5V Clamping Voltage VC 15 V IPP=1A(8 x 20 s pulse)Clamping Voltage VC 28 V IPP=5A(8 x 20 s pulse)Junction Capacitance CJ 0.5 pF V =0V,f=1MHz RTPD4S009DBVRG4 Figure 1.Data Line and Power Supply Protection Using VCC as referenc
7、e Figure 2.Data Line Protection with Bias and Power Supply Isolation Resistor Figure 3.Data Line Protection Using Internal TVS Diode as Reference Device Connection Options for Protection of Four High-Speed Data Lines The TPD4S009DBVRG4 is designed to protect four data lines from transient over-volta
8、ges by clamping them to a fixed reference.When the voltage on the protected line exceeds the reference voltage(plus diode VF)the steering diodes are forward biased,conducting the transient current away from the sensitive circuitry.Data lines are connected at pins 1,3,4 and 6.The negative reference(R
9、EF1)is connected at pin 2.This pin should be connected directly to a ground plane on the board for best results.The path length is kept as short as possible to minimize parasitic inductance.The positive reference(REF2)is connected at pin 5.The options for connecting the positive reference are as fol
10、lows:1.To protect data lines and the power line,connect pin 5 directly to the positive supply rail(VCC).In this configuration the data lines are referenced to the supply voltage.The internal TVS diode prevents over-voltage on the supply rail(See Figure1).2.The TPD4S009DBVRG4 can be isolated from the
11、 power supply by adding a series resistor between pin 5 and VCC.A value of 100k is recommended.The internal TVS and steering diodes remain biased,providing the advantage of lower capacitance(See Figure2).3.In applications where no positive supply reference is available,or complete supply isolation i
12、s desired,the internal TVS may be used as the reference.In this case,pin 5 is not connected.The steering diodes will begin to conduct when the voltage on the protected line exceeds the working voltage of the TVS(plus one diode drop)(See Figure3).Applications Information Rev:01.06.2014 3/7TPD4S009DBV
13、RG4 Figure 4Video Interface Protection Figure 5-Dual USB Port Protection Figure 6-SIM Port Video Interface Protection Video interfaces are susceptible to transient voltages resulting from electrostatic discharge(ESD)and“hot plugging”cables.If left unprotected,the video interface IC may be damaged or
14、 even destroyed.Protecting a high-speed video port presents some unique challenges.First,any added protection device must have extremely low capacitance and low leakage current so that the integrity of the video signal is not compromised.Second,the protection component must be able to absorb high vo
15、ltage transients without damage or degradation.As a minimum,the device should be rated to handle ESD voltages per IEC61000-4-2,level 4(15kV air,8kV contact).The clamping voltage of the device(when conducting high current ESD pulses)must be sufficiently low enough to protect the sensitive CMOS IC.If
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