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通过ISL9109来延长手机电池寿命ExtendingCellPhoneBatteryLifewiththeISL9109ApplicationNoteSeptember17,2008AN1424.0InthisdayandagepracticallyeveryoneisarmedwithacellPOUTinFigure1,istheRFpowergeneratedbythepowerphone.Someofthesesmartphonesnotonlyworkasacellamplifier(PA)fordatacommunicationsandisusuallydirectlyphonebuthaveenoughprocessingpowerthattheyareproportionaltothePAinputvoltage.Thisveryrequiremen……