BQ 24725A 25A QFN-20


Brand new bq24725A 1-4 Cell Li+ Battery SMBus Charge Controller with N-Channel Power MOSFET Selector and Advanced Circuit Protection

The bq24725A is a high-efficiency, synchronous battery charger, offering low component count for space-constraint, multi-chemistry battery charging application.




  • SMBus Host-Controlled NMOS-NMOS Synchronous Buck Converter with Programmable 615kHz, 750kHz, and 885kHz Switching 615kHz, 750kHz, and 885kHz Switching
  • 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 LEARN 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 4.5V-24V
  • 5µA Off-State Battery Discharge Current
  • 0.65mA (0.8mA max) Adapter Standby Quiescent Current
  • 20-pin 3.5 x 3.5 mm2 VQFN Package



Category: QFN-20

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