bq24725
Overview
The bq24725 is a high-efficiency, synchronous battery charger, offering low component count for space-constraint, multi-chemistry battery charging applications. The bq24725 uses two charge pumps to separately drive n-channel MOSFETs (ACFET, RBFET and BATFET) for automatic system power source selection.
- 2 SMBus Host-Controlled NMOS-NMOS Synchronous Buck Converter with Programmable 615kHz, 750kHz, and 885kHz Switching Frequencies
- Automatic N-channel MOSFET Selection of System Power Source from Adapter or Battery Driven by Internal Charge Pumps
- Enhanced Safety Features for Over Voltage Protection, Over Current Protection, Battery, Inductor and MOSFET Short Circuit Protection
- Programmable Input Current, Charge Voltage, Charge Current Limits - ±0.5% Charge Voltage Accuracy up to 19.2V - ±3% Charge Current Accuracy up to 8.128A - ±3% Input Current Accuracy up to 8.064A - ±2% 20x Adapter Current or Charge Current Amplifier Output Accuracy
- Programmable Battery Depletion Threshold, and Battery LERAN Function
- Programmable Adapter Detection and Indicator
- Integrated Soft Start
- Integrated Loop Compensation
- Real Time System Control on ILIM pin to Limit Charge Current
- AC Adapter Operating Range 9V-24V
