ME4064Aisacompletec***tant-current/c***tantvoltagelinearchargerforsinglecelllithium-ionbatteries.FurthermoretheME4064AisspecificallydesignedtoworkwithinUSBpowerspecificati***.NoexternalsenseresistorisneededandnoblockingdiodeisrequiredduetotheinternalPMOSFETarchitecture.Thermalfeedbackregulatesthechargecurrenttolimitthedietemperatureduringhighpoweroperationorhighambienttemperature.Thechargevoltageisfixedat4.2V,andthechargecurrentcanbeprogrammedexternallywithasingleresistor.TheME4064Aautomaticallyterminatesthechargecyclewhenthechargecurrentdropsto1/10ththeprogrammedvalueafterthefinalfloatvoltageisreached.Features●Preset4.2Vchargevoltagewith&plu***n;1%accuracy●AutomaticRecharge●ChargesSingleCellLi-IonBatteriesDirectlyfromUSBPort●C/10chargetermination●55μAsupplycurrentinshutdown●2.9Vtricklecurrentchargethreshold●Soft-Startlimitsinrushcurrent●ChargeStatusOutputPin●***ailableinSOT23-5Package)