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bq2954 - Lithium-Ion Charge

Description

The bq2954 Li-Ion Charge-Management IC uses a flexible pulse-width modulation regulator to control voltage and current during charging.

The regulator frequency is set by an external capacitor for design flexibility.

The switch-mode design minimizes power dissipation.

Features

  • Safe charge of Li-Ion battery packs.
  • Pulse-width modulation control for current and voltage regulation.
  • Programmable high-side/low-side current-sense.
  • Fast charge terminated by selectable minimum current; safety backup termination at maximum time.
  • Pre-charge qualification detects shorted or damaged cells and conditions battery.
  • Charging continuously qualified by temperature and voltage limits.
  • Direct LED control outputs to display c.

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Full PDF Text Transcription

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bq2954 Lithium Ion Charge Management IC with Integrated Switching Controller Features ➤ Safe charge of Li-Ion battery packs ➤ Pulse-width modulation control for current and voltage regulation ➤ Programmable high-side/low-side current-sense ➤ Fast charge terminated by selectable minimum current; safety backup termination at maximum time ➤ Pre-charge qualification detects shorted or damaged cells and conditions battery ➤ Charging continuously qualified by temperature and voltage limits ➤ Direct LED control outputs to display charge status and fault conditions General Description The bq2954 Li-Ion Charge-Management IC uses a flexible pulse-width modulation regulator to control voltage and current during charging.
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