BQ24800 Overview
The BQ24800 device is a high-efficiency, synchronous buck multi-chemistry battery charger supporting 1-, 2-, 3-, or 4-series Li+ cells, or other battery chemistries up to 19.2V. Through SMBus, a host microcontroller programs charge current, charge voltage, input current limit and discharge current limit with high regulation accuracies. Additionally, the BQ24800 supports a two level input current limit (Peak Power...
BQ24800 Key Features
- Hybrid Power Boost Mode to power up system from adapter and battery together
- Ultra-fast transient response of 150µs to enter Hybrid Power Boost Mode
- Battery Only Boost Mode to support larger system transients and extend battery run time
- Peak power two-level input current limit to maximize the power from adapter and minimize battery discharge
- Charge 1- to 4-cell battery pack from 4.5V to 24V adapter
- High accuracy power and current monitoring for CPU throttling
- prehensive PROCHOT profile
- ± 2% Current monitor accuracy
- ± 5% System Power Monitor Accuracy (PMON)
- Automatic NMOS power source selection from adapter or battery