TEL:18617042732***:3073924495Thebq2409xseriesofdevicesarehighlyintegratedLi-ionandLi-Pollinearchargersdevicestargetedatspace-limitedportableapplicati***.ThedevicesoperatefromeitheraUSBportorACadapter.Thehighinputvoltagerangewithinputovervoltageprotectionsupportslow-costunregulatedadapters.Thebq2409xhasasinglepoweroutputthatchargesthebattery.Asystemloadcanbeplacedinparallelwiththebatteryaslongasthe***eragesystemloaddoesnotkeepthebatteryfromchargingfullyduringthe10-hoursafetytimer.Thebatteryischargedinthreephases:conditioning,c***tantcurrentandc***tantvoltage.Inallchargephases,aninternalcontrolloopmonitorstheICjunctiontemperatureandreducesthechargecurrentifaninternaltemperaturethresholdisexceeded.Thechargerpowerstageandchargecurrentsensefuncti***arefullyintegrated.Thechargerfunctionhashighaccuracycurrentandvoltageregulationloops,chargestatusdisplay,andchargetermination.Thepre-chargecurrentandterminationcurrentthresholdareprogrammedviaanexternalresistor.Thefastchargecurrentvalueisalsoprogrammableviaanexternalresistor.特性·Chargingo1%ChargeVoltageAccuracyo10%ChargeCurrentAccuracyoPinSelectableUSB100-mAand500-mAMaximumInputCurrentLimitoProgrammableTerminationandPrechargeThreshold·Protectiono6.6VOver-VoltageProtectionoInputVoltageDynamicPowerManagemento125°CThermalRegulation;150°CThermalShutdownProtectionoOUTShort-CircuitProtectionandISETShortDetectionoOperationOverJEITARangeviaBatteryNTC–½Fast-Charge-CurrentatCold,4.06VatHot,bq24092/3oFixed10-HourSafetyTimer·SystemoAutomaticTerminationandTimerDisableMode(TTDM)forAbsentBatteryPackWithThermistoroStatusIndication–Charging/Doneo***ailablein***all10-PinMSOPPackage·APPLICATI***o***artPhonesoPDAsoMP3PlayersoLow-PowerHandheldDevices封装:MSOP-PowerPAD(DGQ))