bq2954 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.
bq2954 Key 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