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bq24745 Datasheet SMBus-Controlled Multi-Chemistry Battery Charger

Manufacturer: Texas Instruments

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General Description

The bq24745 is a high-efficiency, synchronous battery charger with an integrated input-current comparator, offering low component count for space-constrained, multi-chemistry battery-charging applications.

The input-current, charge-current, and charge-voltage DACs allow very high regulation accuracies that can be easily programmed by the system power-management microcontroll

Overview

Not Recommended for New Designs (NRND) www.ti.com bq24745 SLUS761D – DECEMBER 2007 – REVISED OCTOBER 2011 SMBus-Controlled Multi-Chemistry Battery Charger With Input Current Detect Comparator and Charge Enable Pin Check.

Key Features

  • 1.
  • NMOS-NMOS Synchronous Buck Converter with 300-kHz Frequency and >95% Efficiency.
  • 30-ns Minimum Driver Dead-Time and 99.5% Maximum Effective Duty Cycle.
  • High-Accuracy Voltage and Current Regulation.
  • ±0.5% Charge Voltage Accuracy.
  • ±3% Charge Current Accuracy.
  • ±3% Adapter Current Accuracy.
  • ±2% Input Current Sense Amp Accuracy.
  • Integration.
  • Input Current Comparator, With Adjustable Threshold and Hysteresis.

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