USB/AC Adapter, Li+ Linear Battery Charger With Integrated 50mΩ Battery Switch In TDFN

The MAX8856 complete 1-cell Li+ battery charge-man- agement IC operates from either a USB port or AC adapter. It integrates a battery disconnect Switch cur- rent-sense circuit, PMOS pass element, and thermal- regulation circuitry, while eliminating the external reverse-blocking Schottky Diode to create a simple and small charging solution. The charging sequence initiates from power-OK indication, through prequalifi- cation, fast-charge, top-off charge, and finally charg- ing-complete indication for single-cell Li+ batteries. Charging is controlled using constant current, constant voltage, or constant die-temperature (CCCVCTJ) regu- lation for safe operation in handhelds. By Maxim Integrated Products