ETA9640 _V1.1

ETA96401PoweringMindsoftheSmart5V/1ASynchronousBoostwith1ALinearChargerforPowerBankDESCRIPTIONFEATURESTheETA9640isafullyintegratedpowermanagementunitspecificallydesignedforPowerBank,MobileCharger,BackupBatteryChargerapplications.Itconsistsofahighefficiencysynchronousstep-upboostconverterandalinearbatterycharger.Theboostcanprovideupto1Aoutputcurrentat5VoffromaLi-Ionbatteryinputvoltage,whilethechargercanchargeupto1AofcurrentfromanACadapterinput.Theboostincorporatescircuitsthatdisconnecttheinputfromoutput,duringshutdown,short-circuit,outputcurrentoverloading,orothereventswhenoutputishigherthantheinput.ThisnotonlyeliminatestheneedforanexternalMOSFETanditscontrolcircuitrytodisconnecttheinputfromoutput,alsoprovidesrobustoutputoverloadprotection.UsingapatentpendingtechniquetodrivethechargerLEDindicator,iteliminatestheneedforamicro-controllernormallyneededinmobilechargers.Whilesavingthecostofamicro-controller,sincethewholeunitsonlyconsumeslessthan100uAofquiescentcurrentduringnoload,whenconsideringstandbytimeforonecharge,itisamuchsuperiorsolutioncomparingtothetraditionalsolutionthatneedsamicro-controllerwhichnormallyconsumesupto1mAcurrent.ETA9640isavailableinESOP8package.2in1:ASynchronousboostplusAChargerShort-circuitProtection5WOutputPowerfortheBoostBoostOutputtoInputReversedCurrentProtectionUpto1AChargingUpto96%EfficiencyduringBoosting100μANoloadIQProgrammableChargingCurrentAPPLICATIONSPortablePowerBankPortable3G/4GWiFiHotspotTabletPCPortableDevicepowerwithLi-ionbatteryandUSBoutputORDERINGINFORMATIONPARTPACKAGEPINTOPMARKETA9640E8AESOP-8ETA9640YWWPL(DateCode)TYPICALAPPLICATIONTypicalApplicationCircuit87651234ETA964018650锂电池22uF10uF2.2-4.7uH1nF47K10K10uF1.2KMiniUSBUSBV+D+D-V-120K36K100K放电指示部分，可省略充电电流(A)1000/1.2K电量指示灯1uFETA96402PoweringMindsoftheSmartABSOLUTEMAXIMUMRATINGS(Note:Exceedingtheselimitsmaydamagethedevice.Exposuretoabsolutemaximumratingconditionsforlongperiodsmayaffectdevicereliability.)Pin1Voltage..................................................................................................................................................................................–0.3Vto6.0VPin5Voltage.................................................................................................................................................................................–0.3Vto5.0VAllOtherPinExceptPin5Voltage..............................................................................................................................VIN–0.3VtoVIN+0.3Pin4togroundcurrent………………………………………………………………………………………………………….…….……..…………...InternallylimitedOperatingTemperatureRange……………………………………………………………………………………………………….……………....…–40°Cto85°CStorageTemperatureRange……..………………………………………………………………………………………………………….………….–55°Cto150°CThermalResistanceJAJCESOP-8….………………………………………………………………………………………………………………………..….……………..50..............10......°C/WELECTRICALCHACRACTERISTICS(VIN=3.6V,VOUT=5V,unlessotherwisespecified.TypicalvaluesareatTA=25oC.)PARAMETERCONDITIONSMINTYPMAXUNITSOutputUSBVoltageRange4.85.05.2VQuiescentCurrentfrombatteryVbattery=3.6V,Noload100μAShutdownSupplyCurrentfrombatteryVpin3=GND0.55μASwitchingFrequency1.21.82.4MHzMaximumDutyCycle90%SwitchCurrentLimit1.82.1AInputminiUSBVoltage4.56.0VChargeTerminationVoltage4.154.24.24VRechargeThreshold4.05VTrickleChargeVoltagethreshold2.9VChargingCurrent=1000/R1,whenR1=1K,0.8511.15ATrickleChargeCurrent45mATerminationChargeCurrentThreshold=I_term/I_charge_set0.1LEDSinkCurrent5mATYPICALCHARACTERISTICS(TypicalvaluesareatTA=25oCunlessotherwisespecified.)ETA96403PoweringMindsoftheSmartSwitchingWaveform:VIN=3.6V,Vout=5V,IOUT=1ATransientResponseWaveform:VIN=3.6V,Vout=5V,IOUT=0.1-1AAPPLICATIONNOTESTheETA9640isdesigneddedicatedforaLi-ionpoweredsystemwith1AUSBoutputport,suchasportablepowerbank.Acompleteapplicationcircuitisshownabove,whereonecanfindveryfewperipheraldevicesneeded.The120K/36K/120KserialresistorisjustfortheiPhonechargingportsetup,whichisnotnecessaryforallsystems.OnecanalsosimplyshorttheD+andD-pinoftheUSBoutputporttoachievethesamefunction.TheblueLEDwith1nFcapacitorand47Kresistorfilterisforanoutputindicator,whichcanalsoberemovedifonedon’tneedthisindicator.TheredLEDistoindicatethebatteryvoltagelevel,whichservesasan4-levelbattery“gasgauge”..CustomerservicePleasecontactyourdealerordirectlye-mailcustomerserviceofETASolutionsfordetailinformationofETA9640.87651234ETA964018650锂电池22uF10uF2.2-4.7uH1nF47K10K10uF1.2KMiniUSBUSBV+D+D-V-120K36K100K放电指示部分，可省略充电电流(A)1000/1.2K电量指示灯1uFSWVoutVoutI_SWETA96404PoweringMindsoftheSmartPCBLAYOUTGUIDELINEArecommendedPCBlayoutisshownbelow.Thecapacitors,CbatandCoutmustbeplacedasclosetheETA9640aspossible.PACKAGEOUTLINEPackage:ESOP-8