资 源 简 介
The LM3658 is a single chip charger IC designed for handheldapplicaTIons. It can safely charge and maintain a single cellLi-Ion/Polymer battery operaTIng from an AC wall adapter orUSB power source. Input power source selecTIon of USB/ACis automaTIc. With both power sources present, the AC powersource has priority. Charge current is programmed throughan external resistor when operating from an AC wall adapterallowing charge currents from 50 mA to 1000 mA. When thebattery is charged using USB power, charge currents of 100mA or 500 mA are pin-selectable. The termination voltage iscontrolled to within ±0.35% of 4.2V.