APM8601

NOT RECOMMENDED FOR NEW DESIGN Green APM8601 DUAL CHANNEL SINGLE CELL LINEAR LITHIUM BATTERY CHARGER WITH 28V OVP and PROGRAMMABLE CHARGE TIMER Description The APM8601 is a dual input channel linear Li-Ion charger for portable equipment that is optimized for small formfactor applications. The charge algorithm in the APM8601 covers all the charge requirements for a single Li-Ion battery cell. Included is pre-charging for deeply discharged cells, constant current / constant voltage fast charging and a top-off feature to bring the cell safely to a full-charge level. The battery is constantly monitored for overvoltage, charge time and cell temperature to ensure safe charging. A fault is triggered once the charge time exceeds a value that is programmable using a single capacitor and the temperature measurement is achieved through a thermistor positioned close to the battery cell. The APM8601 automatically selects the USB or DC input, depending on which is valid (DC has priority if both are valid). The charging current from the USB input is set to 100mA or 500mA based on the logic level of the USEL input. The APM8601 is packaged in U-DFN3030-14 package with a thermal pad. Pin Assignments BAT 1 SETI 2 THM 3 GND 4 CT 5 USEL 6 BAT 7 APM8601 14 FLT 13 DC 12 DC 11 CHG 10 POK 9 USB 8 EN Figure 1 Pin Out Applications Handheld Consumer Devices Cell Phones, PDAs, MP3 Players Handheld Test Equipment Digital Still Cameras Multimedia Players Features Linear Lithium Ion ...