BQ25980 Overview
The BQ25980 is a 98.6% peak efficiency, 8-A battery charging solution using dual-phase switched cap architecture for 2-cell Li-ion battery. The switched cap architecture allows the cable current to be half the charging current, reducing the cable power loss and limiting temperature rise. The dual-phase architecture increases charging efficiency and reduces the input and output cap requirements.
BQ25980 Key Features
- 98.6% peak efficiency switched cap parallel charger supporting 2-cell battery and 8-A fast charge
- Patent pending dual phase switched cap architecture optimized for highest efficiency
- Input voltage is 2x battery voltage (7.0V to 9.54V)
- Output current is 2x of input current (up to 4.75A)
- Reduces power loss across input cable
- Integrated 7-A bypass mode fast charge
- 13mΩ charging path resistance for high current operation
- Dual-input power mux controller for source selection
- Support wide range of input voltage
- Up to 22-V operational input voltage