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PT6112StandaloneLinearLi-IonBatteryChargerwithThermalRegulationGENERALDESCRIPTIONFEATURESThePT6112isahighlyintegratedLi-ionbatterylinearzChargesSingleCellLi-IonBatteriesDirectlyfromchargingmanagementdevicetargetedatspacelimitedUSBPortportableapplications.ThePT6112offersanintegratedMOSFETandcurrentsensor,reverseblockingzProgrammableChargeCurrentUpto800mAprotection,highaccuracycurrentandvoltageregulation,zNoMOSFET,SenseResistororBlockingDiodechargestatusindication,andchargeterminationinaRequiredSOT23orESOP8package.ThePT6112haslowexternalcomponentcount.ThePT6112chargesazCompleteLinearChargerinSOT23-5orESOP8batteryinthreephases:tricklecharging,constantPackageforSingleCellLithium-IonBatteriescurrent,andconstantvoltage.NoexternalsenseresistorzConstant-Current/Constant-VoltageOperationwithisneeded,andnoblockingdiodeisrequiredduetotheThermalRegulationtoMaximizeChargeRateWithoutinternalMOSFETarchitecture.ThethermalfeedbackregulatesthechargingcurrenttolimitthechipRiskofOverheatingtemperatureduringhighpoweroperationorhighzPreset4.2VChargeVoltagewith±1%Accuracyambienttemperaturetomaximizethechargeratewithoutriskofoverheating.ThechargevoltageisfixedAPPLICATIONSat4.2V,andthechargecurrentcanbeprogrammedexternallywithasingleresistor.ThePT6112zCellularTelephones,PDAs,MP3PlayersautomaticallyterminatesthechargecyclewhenthezBluetoothApplicationschargecurrentdropsto1/10theprogrammedvalueafterthefinalfloatvoltageisreached.ThePT6112zDigitalCamerasautomaticallyre-startsthechargeifthebatteryvoltagezChargingDocksandCradlesfallsbelowaninternalthreshold.ORDERINGINFORMATIONTEMPERATUREORDERINGPARTTRANSFERPACKAGEMARKINGRANGENUMBERMEDIASOT23-5-40℃to85℃PT6112E23ETape&Reel6112PT6112ESOP8-40℃to85℃PT6112EESOTape&ReelxxxxxXTYPICALAPPLICATIONCIRCUITKEYPERFORMANCECHARTCompleteChargingCycle(900mAhBattery)7004.25ConstantcurrentConstantvoltage6004.204.155004.10400Chargeterminated4.053004.002003.95ChargeCurrent(mA)ChargeCCV=5V,BatteryVoltage(V)1003.
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