www.ti.com Actual Size(3,10 mm x 4,50 mm)TPS2112TPS2113SLVS446 – DECEMBER 2002AUTOSWITCHING POWER MUXFEATURESDTwo-Input, One-Output Power MultiplexerAPPLICATIONSDDDDDDDPCsPDAsDigital CamerasModemsCell phonesDigital RadiosMP3 PlayersPW PACKAGE(TOP VIEW)DDDDLow Operating Current . . . . 55-µA TypDAdjustable Current LimitDControlled Output Voltage Transition Times,Limits Inrush Current and Minimizes OutputVoltage Hold-Up CapacitanceCMOS and TTL Compatible Control InputsAuto-Switching Operating ModeThermal ShutdownAvailable in a TSSOP-8 PackageWith Low rDS(on) Switches:– 84 mΩ Typ (TPS2113)– 120 mΩ Typ (TPS2112)Reverse and Cross-Conduction BlockingWide Operating Voltage Range . . . .2.8 V to5.5 VLow Standby Current . . . . 0.5-µA TypDDDDSTATENVSNSILIM12348765IN1OUTIN2GNDDESCRIPTIONThe TPS211x family of power multiplexers enables seamless transition between two power supplies, such as a battery anda wall adapter, each operating at 2.8–5.5 V and delivering up to 1 A. The TPS211x family includes extensive protectioncircuitry, including user-programmable current limiting, thermal protection, inrush current control, seamless supplytransition, cross-conduction blocking, and reverse-conduction blocking. These features greatly simplify designing powermultiplexer applications.TYPICAL APPLICATIONSwitch StatusIN1: 2.8 – 5.5 VTPS2113PW1234STATENVSNSILIMIN1OUTIN2GND8765CLRL0.1 µFR1RILIMIN2: 2.8 – 5.5 V0.1 µFPlease be aware that an important notice concerning availability, standard warranty, and use in critical applications of TexasInstrumentssemiconductor products and disclaimers thereto appears at the end of this data sheet.PRODUCTION DATA information is current as of publication date. Productsconform to specifications per the terms of Texas Instruments standard warranty.Production processing does not necessarily include testing of all parameters.Copyright 2002, Texas Instruments Incorporatedhttp://oneic.com/TPS2112TPS2113SLVS446 – DECEMBER 2002www.ti.comThese devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam duringstorage or handling to prevent electrostatic damage to the MOS gates.AVAILABLE OPTIONSFEATURECurrent Limit Adjustment RangeSwitchingmodesSwitching modesSwitch Status OutputPackageManualAutomaticTPS21100.31–0.75AYesYesNoTSSOP-8TPS21110.63–1.25AYesYesNoTSSOP-8TPS21120.31–0.75ANoYesYesTSSOP-8TPS21130.63–1.25ANoYesYesTSSOP-8TPS21140.31–0.75AYesYesYesTSSOP-8TPS21150.63–1.25AYesYesYesTSSOP-8ORDERING INFORMATIONTA–40°CC to 85t85°CPACKAGETSSOP8(PW)TSSOP-8 (PW)ORDERING NUMBER(1)TPS2112PWTPS2113PWMARKINGS21122113(1)The PW package is available taped and reeled. Add an R suffix to the device type (e.g., TPS2112PWR) to indicate tape and reel.PACKAGE DISSIPATION RATINGSPACKAGETSSOP-8 (PW)DERATING FACTOR ABOVETA = 25°C3.87 mW/°CTA ≤ 25°CPOWER RATING386.84 mWTA = 70°CPOWER RATING212.76 mWTA = 85°CPOWER RATING1.73 mWABSOLUTE MAXIMUM RATINGSover operating free-air temperature range unless otherwise noted(1)TPS2112, TPS2113Input voltage range at pins IN1, IN2, EN, VSNS, ILIM(2)Output voltage range, VO(OUT), VO(STAT)(2)Output sink current, IO(STAT)Continuous output current, IContinuousoutputcurrentIOContinuous total power dissipationOperating virtual junction temperature range, TJStorage temperature range, TstgTPS2112TPS2113–0.3 V to 6 V–0.3 V to 6 V5 mA0.9 A1.5 ASee Dissipation Rating Table–40°C to 125°C–65°C to 150°CLead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds260°C(1)Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, andfunctional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is notimplied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.(2)All voltages are with respect to GND.RECOMMENDED OPERATING CONDITIONSMINInput voltage at IN1, VInputvoltageatIN1VI(IN1)Input voltage at IN2, VInputvoltageatIN2VI(IN2)Input voltage, VI(EN), VI(VSNS)Current limit adjustment range, ICurrentlimitadjustmentrangeIO(OUT)Operating virtual junction temperature, TJTPS2112TPS2113VI(IN2) ≥ 2.8 VVI(IN2) < 2.8 VVI(IN1) ≥ 2.8 VVI(IN1) < 2.8 V1.52.81.52.800.310.63–40MAXUNIT5.55.55.55.55.50.751.25125VVVA°CELECTROSTATIC DISCHARGE (ESD) PROTECTIONMINHuman body modelCDM2MAXUNIT2500kVVhttp://oneic.com/www.ti.comTPS2112TPS2113SLVS446 – DECEMBER 2002ELECTRICAL CHARACTERISTICS over recommended operating junction temperature range, VI(IN1) = VI(IN2) = 5.5 V, RILIM = 400 Ω (unless otherwise noted)TPS2112TPS2113PARAMETERTESTCONDITIONSTEST CONDITIONSMINTYPMAXMINTYPMAXPOWER SWITCHTJ = 2525°C,CIL = 500 mA=500mATJ = 125125°C,CIL = 500 mA=500mAVI(IN1) = VI(IN2) = 5.0 VVI(IN1) = VI(IN2) = 3.3 VVI(IN1) = VI(IN2) = 2.8 VVI(IN1) = VI(IN2) = 5.0 VVI(IN1) = VI(IN2) = 3.3 VVI(IN1) = VI(IN2) = 2.8 V120120120140140140220220220848484110110110150150150mΩmΩUNITrDS(on)DS()(1)Drain-sourceDionstateresistanceon-state resistance(INx–OUT)(1)The TPS211x can switch a voltage as low as 1.5 V as long as there is a minimum of 2.8 V at one of the input power pins. In this specific case,the lower supply voltage has no effect on the IN1 and IN2 switch on-resistances.PARAMETERLOGIC INPUTS (EN)VIH High-level input voltageVIL Low-level input voltageInputcurrentInput currentEN = High, sink currentEN = Low, source currentVI(VSNS) = 1.5 V, EN = Low (IN1 active), VI(IN1) = 5.5 V,VI(IN2) = 3.3 V, IO(OUT) = 0 AVI(VSNS) = 1.5 V, EN = Low (IN1 active), VI(IN1) = 3.3 V,VI(IN2) = 5.5 V, IO(OUT) = 0 AVI(VSNS) = 0 V, EN = Low (IN2 active), VI(IN1) = 5.5 V,VI(IN2) = 3.3 V, IO(OUT) = 0 AVI(VSNS) = 0 V, EN = Low (IN2 active), VI(IN1) = 3.3 V,VI(IN2) = 5.5 V, IO(OUT) = 0 AVI(VSNS) = 1.5 V, EN = Low (IN1 active), VI(IN1) = 5.5 V,VI(IN2) = 3.3 V, IO(OUT) = 0 AVI(VSNS) = 1.5 V, EN =Low (IN1 active), VI(IN1) = 3.3 V,VI(IN2) = 5.5 V, IO(OUT) = 0 AVI(VSNS) = 0 V, EN = Low (IN2 active), VI(IN1) = 5.5 V,VI(IN2)= 3.3 V, IO(OUT) = 0 AVI(VSNS) = 0 V, EN = Low (IN2 active), VI(IN1) = 3.3 V,VI(IN2) =5.5 V, IO(OUT) = 0 AEN = High (inactive), VI(IN1) = 5.5 V, VI(IN2) = 3.3 V, IO(OUT) = 0 AEN = High (inactive), VI(IN1) = 3.3 V, VI(IN2) = 5.5 V, IO(OUT) = 0 AEN = High (inactive), VI(IN1) = 5.5 V, VI(IN2) = 3.3 V, IO(OUT) = 0 AEN = High (inactive), VI(IN1) = 3.3 V, VI(IN2) = 5.5 V, IO(OUT) = 0 AEN = High (inactive), VI(IN1) = 5.5 V, IN2 open,VO(OUT) = 0 V (shorted), TJ = 25°CEN = High (inactive), VI(IN2) = 5.5 V, IN1 open,VO(OUT) = 0 V (shorted), TJ = 25°CEN = High (inactive), VI(INx) = 0 V, VO(OUT) = 5.5 V, TJ = 25°C0.50.10.10.30.51.420.715VVµATEST CONDITIONSMINTYPMAXUNITSUPPLY AND LEAKAGE CURRENTS5519012µA751175µA1550.512902112555µAµAµAµAµASuly current from IN1Supply current from IN1(operating)Suly current from IN2Supply current from IN2(operating)Quiescent current from IN1(STANDBY)Quiescent current from IN2(STANDBY)Forward leakage current from IN1(measured from OUT to GND)Forward leakage current from IN2(measured from OUT to GND)Reverse leakage current to INx(measured from INx to GND)STAT OUTPUTLeakage currentSaturation voltageDeglitch time (falling edge only)VO(STAT) = 5.5 VII(STAT) = 2 mA, IN1 switch is on0.010.1315010.4µAVµs3http://oneic.com/TPS2112TPS2113SLVS446 – DECEMBER 2002www.ti.comELECTRICAL CHARACTERISTICS (Continued)over recommended operating junction temperature range, VI(IN1) = VI(IN2) = 5.5 V, RILIM = 400 Ω (unless otherwise noted)PARAMETERCURRENT LIMIT CIRCUITTPS2112CurrentlimitaccuracyCurrent limit accuracyTPS2113tdCurrent limit settling time(1)Input current at ILIM(1)Not tested in production.PARAMETERVSNS COMPARATORVSNSthresholdvoltageVSNS threshold voltageVSNS comparator hysteresis(1)Deglitch of VSNS comparator (both ↑↓)(1)Input currentUVLOIN1andIN2UVLOIN1 and IN2 UVLOIN1 and IN2 UVLO hysteresis(1)Internal VInternalVDD UVLO (the higher of IN1 and IN2)UVLO(thehigherofIN1andIN2)Internal VDD UVLO hysteresis(1)UVLO deglitch for IN1, IN2(1)(1)Not tested in production.PARAMETERREVERSE CONDUCTION BLOCKINGMinimum output-to-input voltagedifference to block switchingEN = high, VI(IN1) = 3.3 V and VI(IN2) = VI(VSNS) =0 V. Connect OUT to a 5 V supply through a series1-kΩ resistor. Let EN = low. Slowly decrease thesupply voltage until OUT connects to IN1.TEST CONDITIONSTPS211x is in current limit.TPS211x is in current limit.TEST CONDITIONSMINTYPMAXUNITFalling edgeRising edge30Falling edgeFalling edgeRising edge302.41.151.251.30572.532.58501102.8751.3565VmVVmVµs0 V≤ VI(VSNS)≤ 5.5 VVI(VSNS) ↑VI(VSNS) ↓0.780.7353090–11500.80.7550.820.775602201VmVµsµATEST CONDITIONSMINTYPMAXUNITRILIM = 400 ΩRILIM = 700 ΩRILIM = 400 ΩRILIM = 700 ΩTime for short–circuit output current tosettle within 10% of its steady state value.VI(ILIM) = 0 V, IO(OUT) = 0 A–150.510.300.950.470.630.361.250.71100.800.501.560.99msµAATEST CONDITIONSMINTYPMAXUNIT∆VO(I_block)80100120mVPARAMETERTHERMAL SHUTDOWNThermal shutdown threshold(1)Recovery from thermal shutdown(1)Hysteresis(1)IN2–IN1 COMPARATORSHysteresis of IN2–IN1 comparatorDeglitch of IN2–IN1 comparator, (both ↑↓)(1)(1)Not tested in production.MIN135125TYPMAXUNIT°C100.1901500.2220Vµs4http://oneic.com/www.ti.comTPS2112TPS2113SLVS446 – DECEMBER 2002SWITCHING CHARACTERISTICS over recommended operating junction temperature range, VI(IN1) = VI(IN2) = 5.5 V, RILIM = 400 Ω (unless otherwise noted)TPS2112TPS2113PARAMETERTESTCONDITIONSTEST CONDITIONSMINTYPMAXMINTYPMAXPOWER SWITCHtrOutput rise time froman enable(1)Output fall time froma disable(1)VI(IN1) = VI(IN2) = 5 V,VI(VSNS) = 1.5 VVI(IN1) = VI(IN2) = 5 V,VI(VSNS) = 1.5 VTJ = 25°C, CL = 1 µF,IL = 500 mA,See Figure 1(a)TJ = 25°C, CL = 1 µF,IL = 500 mA,See Figure 1(a)TJ = 125°C, CL = 10 µF,IL = 500 mA[Measure transition timeas 10–90% rise time orfrom 3.4 V to 4.8 V onVO(OUT)],See Figure 1(b)TJ = 25°C, CL = 10 µF,IL = 500 mA,See Figure 1(a)TJ = 25°C, CL = 10 µF,IL = 500 mA,See Figure 1(a)0.51.01.511.83msUNITtf0.350.50.70.512msttTransition time(1)IN1 to IN2 transition,VI(IN1) = 3.3 V,VI(IN2) = 5 V,VI(EN) = 0 VVI(IN1) = VI(IN2) = 5 VMeasured from enable to10% of VO(OUT),VI(VSNS) = 1.5 VVI(IN1) = VI(IN2) = 5 V,Measured from disableto 90% of VO(OUT),VI(VSNS) = 1.5 VLogic 1 to Logic 0transition on VSNS ,VI(IN1) = 1.5 V,VI(IN2) = 5 V,VI(EN) = 0 V,Measured from VSNS to10% of VO(OUT)Logic 0 to Logic 1transition on VSNSVI(IN1) = 1.5V,VI(IN2) = 5V,VI(EN) = 0 V,Measured from VSNS to90% of VO(OUT)40604060µstPLH1Turn-on propagationdelay from enable(1)Turn-off propagationdelay from adisable(1)0.51mstPHL135mstPLH2Switch-over risingpropagation delay(1)TJ = 25°C, CL = 10 µF,IL = 500 mA,See Figure 1(c)0.1710.171mstPHL2Switch-over fallingpropagation delay(1)TJ = 25°C, CL = 10 µF,IL = 500 mA,See Figure 1(c)23102510ms(1)Not tested in production.5http://oneic.com/TPS2112TPS2113SLVS446 – DECEMBER 2002www.ti.comTRUTH TABLEEN01VI(VSNS) > 0.8VYesNoNoXVI(IN2) > VI(IN1)XNoYesXSTAT00Hi-Z0OUT(1)IN1IN1IN2Hi-Z(1)The under-voltage lockout circuit causes the output OUT to go Hi-Z if theselected power supply does not exceed the IN1/IN2 UVLO, or if neither ofthe supplies exceeds the internal VDD UVLO.Terminal FunctionsTERMINALNAMEENGNDIN1IN2ILIMOUTSTATVSNSNO.258713I/OIIIIIOOIDESCRIPTIONEN is a TTL and CMOS compatible input with a 1-µA pull-up. The truth table shown above illustrates the functionality ofEN.GroundPrimary power switch input. The IN1 switch can be enabled only if the IN1 supply is above the UVLO threshold and atleast one supply exceeds the internal VDD UVLO.Secondary power switch input. The IN2 switch can be enabled only if the IN2 supply is above the UVLO threshold andat least one supply exceeds the internal VDD UVLO.A resistor RILIM from ILIM to GND sets the current limit IL to 250/RILIM and 500/RILIM for the TPS2112 and TPS2113,respectively.Power switch outputSTAT is an open-drain output that is Hi-Z if the IN2 switch is ON. STAT pulls low if the IN1 switch is ON or if OUT is Hi-Z(i.e., EN is equal to logic 0)An internal power FET connects OUT to IN1 if the VSNS voltage is greater than 0.8 V. Otherwise, the FET connects OUTto the higher of IN1 and IN2. The truth table shown above illustrates the functionality of VSNS.6http://oneic.com/www.ti.comTPS2112TPS2113SLVS446 – DECEMBER 2002FUNCTIONAL BLOCK DIAGRAM1 µAInternal VDDVf = 0 VVf = 0 VQ1IO(OUT)7OUTIN18Q2IN26VDDULVOIN2ULVOIN1ULVOCross-ConductionDetectorChargePumpk* IO(OUT)TPS2112: k = 0.2%TPS2113: k = 0.1%0.5 V4_+ILIM+_0.6 V++_EN1Q1 is ONVO(OUT) > VI(INx)100 mV+EN2Q2 is ONUVLO (VDD)UVLO (IN2)UVLO (IN1)ENVSNS230.8 V+_ControlLogic+_VI(VSNS) >0.8 VThermalSenseVI(IN2) > VI(IN1)EN1+_1IN2IN1STATGND5Q2 is ON7http://oneic.com/TPS2112TPS2113SLVS446 – DECEMBER 2002www.ti.comPARAMETER MEASUREMENT INFORMATIONVO(OUT)0 V90%10%trtPLH1EN90%10%tftPHL1Switch OffSwitch OffSwitch Enabled(a)4.8 V3.4 VttVO(OUT)3.3 VVSNSSwitch #1 Enabled5 VSwitch #2 Enabled(b)VO(OUT)1.5 V5 V1.85 V4.65 VtPLH2VSNSSwitch #1 EnabledSwitch #2 Enabled(c)tPHL2Switch #1 EnabledFigure 1. Propagation Delays and Transition Timing Waveforms8http://oneic.com/www.ti.comTPS2112TPS2113SLVS446 – DECEMBER 2002TYPICAL CHARACTERISTICSOUTPUT SWITCHOVER RESPONSE3.3 VVI(VSNS)2V/DIVf = 28 Hz22% Duty CycleNCTPS2113PW1234400 ΩVO(OUT)2V/DIVt – Time – 1 ms/div5 V0.1 µFSTATENVSNSILIMIN1OUTIN2GND87651 µF50 Ω0.1 µFOutput Switchover Response Test CircuitFigure 2OUTPUT TURN-ON RESPONSEVI(EN)2V/Div5 VTPS2113PWf = 28 Hz78% Duty CycleNC1234400 ΩVO(OUT)2V/DivSTATENVSNSILIMIN1OUTIN2GND87651 µF50 Ω0.1 µFOutput Turn-On Response Test Circuitt – Time – 2 ms/divFigure 39http://oneic.com/TPS2112TPS2113SLVS446 – DECEMBER 2002www.ti.comTYPICAL CHARACTERISTICSOUTPUT SWITCHOVER VOLTAGE DROOPVI(VSNS)2V/DivCL = 1 µFVO(OUT)2V/DivCL = 0 µFt – Time – 40 µs/div5 VSW1TPS2113PWf = 580 Hz90% Duty CycleNC1234400 ΩSTATENVSNSILIMIN1OUTIN2GND8765CL50 Ω0.1 µF1 kΩ0.1 µFOutput Switchover Voltage Droop Test CircuitFigure 4NOTE:To initialize the TPS2113 for this test, set input VSNS equal to 0 V, turn on the 5 V supply, and then turn on switch SW1.10http://oneic.com/
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