The AAT3680 BatteryManagerTM is a member of AnalogicTech's Total Power Management ICTM family. This device is an advanced Lithium-Ion (LiIon) battery charge and management IC, specifically designed for low cost compact portable applications. In a single 8-pin package, the AAT3680 precisely regulates battery charge voltage and charge current. This device 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, thus protecting the charging device and the battery under charge. A battery charge state monitor output pin is provided to indicate the battery charge status though a display LED. The battery charge status output is a serial interface which may also be read by a system microcontroller.