标签: max1874

MAX1874_IcpdfCom19-2912;Rev0;7/03Dual-Input,USB/ACAdapter,1-CellLi+ChargerwithOVPandThermalRegulationGeneralDescriptionTheMAX1874chargesasingle-cellLi+batteryfrombothUSBandACadaptersources.Italsoincludesbattery-to-inputpowerswitchover,sothesystemcanbepowereddirectlyfromthepowersourceratherthanfromthebattery.Initssimplestapplication,theMAX1874needsnoexternalMOSFETordiodes,andacceptsinputvoltagesupto6.5V;however,DCinputovervoltageprotectionupto18VcanbeaddedwithasingleSOTPFET.On-chipthermallimitingsimplifiesPCboardlayoutandallowsoptimumchargingratewithoutthethermallimitsimposedbyworst-casebatteryandinputvoltage.WhentheMAX1874thermallimitisreached,thechargerdoesnotshutdownbutsimplyred……

MAX1874双路输入、USB_AC适配器、1节Li+充电器……