TheLTC3677-3isahighlyintegratedpowermanagement IC for single-cell Li-Ion/Polymer battery applications. It includes a PowerPath manager with automatic load prioritization,abatterycharger,anidealdiode,inputovervoltageprotectionandnumerousotherinternalprotection features.TheLTC3677-3isdesignedtoaccuratelycharge fromcurrentlimitedsuppliessuchasUSBbyautomatically reducingchargecurrentsuchthatthesumoftheload currentandthechargecurrentdoesnotexceedtheprogrammedinputcurrentlimit(100mAor500mAmodes). TheLTC3677-3reducesthebatteryvoltageatelevated temperaturestoimprovesafetyandreliability.Thethree step-downswitchingregulatorsandtwoLDOsprovide awiderangeofavailablesupplies.TheLTC3677-3also includesapushbuttoninputtocontrolpowersequencing andsystemreset.TheLTC3677-3haspushbuttontimingandsequencingdesignedtosupporttheSiRFAtlas IVprocessor.TheLTC3677-3isavailableinalowprofile 4mmx7mmx0.75mm44-pinQFNpackage. L,LT,LTC,LTM,LinearTechnology,PowerPath,BurstModeandtheLinearlogoareregistered trademarksandBat-TrackandHotSwaparetrademarksofLinearTechnologyCorporation. Allothertrademarksarethepropertyoftheirrespectiveowners.ProtectedbyU.S.Patents, including6522118,6700364,7511390,5481178,6580258.Otherpatentspending.