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BQ725 - 2-4 Cell Li+ Battery SMBus Charge Controller

General Description

The bq24725 is a high-efficiency, synchronous battery charger, offering low component count for space-constraint, multi-chemistry battery charging applications.

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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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.ti.com 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: bq24725 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% Charge Voltage Accuracy up to 19.2V – ±3% Charge Current Accuracy up to 8.128A – ±3% Input Current Accuracy up to 8.