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bq24745 - SMBus-Controlled Multi-Chemistry Battery Charger

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.

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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Full PDF Text Transcription for bq24745 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for bq24745. For precise diagrams, and layout, please refer to the original PDF.

Not Recommended for New Designs (NRND) www.ti.com bq24745 SLUS761D – DECEMBER 2007 – REVISED OCTOBER 2011 SMBus-Controlled Multi-Chemistry Battery Charger With Input Curr...

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2011 SMBus-Controlled Multi-Chemistry Battery Charger With Input Current Detect Comparator and Charge Enable Pin Check for Samples: bq24745 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 – Internal Soft-Start • Safety – Dynamic Power Management (DPM

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