LM3658 Datasheet (National Semiconductor) - Dual Source USB/AC Li Chemistry Charger

LM3658, Dual Source USB/AC Li Chemistry Charger

The LM3658 is a single chip charger IC designed for handheld applications.

It can safely charge and maintain a single cell Li-Ion/Polymer battery operating from an AC wall adapter or USB power source.

Input power source selection of USB/AC is automatic.

With both power sources present, the AC power

LM3658 Features

* n Integrated power FETs with thermal regulation n Charges from either an AC wall adapter or USB power source with automatic source selection n 50 mA to 1000 mA charge currents using AC wall adapter n Pin-selectable USB charge currents of 100 mA or 500 mA n Continuous battery temperature monitoring n