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bq24725 Datasheet 2-4 Cell Li+ Battery Smbus Charge Controller

Manufacturer: Texas Instruments

Overview: .ti. bq24725 SLUS702A – JULY 2010 – REVISED NOVEMBER 2010 2-4 Cell Li+ Battery SMBus Charge Controller with N-Channel Power MOSFET Selector and Advanced Circuit Protection Check for Samples:.

General Description

The bq24725 is a high-efficiency, synchronous battery charger, offering low ponent 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.

SMBus controlled input current, charge current, and charge voltage DACs allow for high regulation accuracies that can be programmed by the system power management micro-controller.

Key Features

  • 1.
  • 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%.

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