AAT3688AAT3688 USB Port Lithium-Ion/Polymer Battery Charger General Description The AAT3688 BatteryManager is a member of AnalogicTech's Total Power Management IC (TPMIC) product family. This device is a highly integrated single cell lithium-ion/polymer battery charger IC designed to operate with USB port inputs. It requires the minimum number of external components. The AAT3688 precisely regulates battery charge voltage and current for 4.2V lithium-ion/polymer battery cells. Depending on the USB port type, the AAT3688 charge current can be programmed for two separate levels up to 500mA. An optional Charge Reduction Loop is built in to allow users to charge the battery with available current from a USB port, while keeping the port voltage regulated. Battery temperature and charge state are fully ……