The AAT3680 BatteryManager is a member of AnalogicTech's Total Power Management ICTM (TPMICTM) product family. This device is a lithiumion/polymer battery charge and management IC, specifically designed for compact portable applications. The AAT3680 precisely regulates battery charge voltage and charge current, and is capable of two trickle charge current levels controlled by one external pin. Battery charge temperature and charge state are carefully monitored for fault conditions. In the event of an over-current, short-circuit, or over-temperature failure, the device will automatically shut down, protecting the charging device and the battery under charge. A battery charge state monitor output pin is provided to indicate the battery charge status through a display LED. The battery charge status output is a serial interface which may also be read by a system microcontroller.