APL3208B

APL3208A/B/C Li+ Charger Protection IC with Integrated P-MOSFET Features Input Over-Voltage Protection Current-Limit Protection Battery Over-Voltage Protection High Immunity of False Triggering High Accuracy Protection Threshold A Built-In P-MOSFET Available with 3 Versions of Charging Current: 450mA, 550mA, 650mA Thermal Shutdown Protection Available in TDFN2x2-8 and TSOT-23-6A Packages “Lithium-Safe” Criteria Lead Free and Green Devices Available (RoHS Compliant) General Description The APL3208A/B/C provides complete Li+ charger protection against Input over-voltage, battery over-voltage, and the charge current limit. When the input OVP or the battery OVP is over the threshold, the IC removes the power from the charging system by turning off an internal switch. When the current via the internal switch surpasses the current limit threshold, the current will be clamped in a constant level to provide a constant current for battery charging usage. All protections also have deglitch time against false triggering due to voltage spikes or current transients. The APL3208A/B/C integrates a P-MOSFET with the body diode reverse protection to replace the external power bipolar transistor and Schottky diode for charger function of the Infineon ULC2 mobile phones. When the CHG_DET voltage drops below VBAT+20mV, the internal power select circuit will reverse the body diode’ s terminal to prevent a reverse current flowing from the battery back to the CHG_DET pin. Th...