Power
I2C controlled two cell battery charger for USB input
The BQ25882 from Texas Instruments is a highly-integrated two amp switch-mode battery charge management and system power path management device for dual-cell Li-Ion and Li-polymer batteries. The I2C Serial interface with charging and system settings makes the device a truly flexible solution.
Some features of the BQ25882 include:
- High-efficiency 2-A, 1.5-MHz switch mode boost charger.
- USB On-the-Go (OTG) with adjustable output from 4.5 to 5.5V.
- Single input to support USB input adapters.
- Input Current Optimizer (ICO) to maximise input power without overloading adapters.
- Highest battery discharge efficiency with 15-mΩ battery discharge MOSFET.
- Integrated ADC for system monitoring (BUS voltage and current, BAT voltage, charge current, SYS voltage, and NTC and die temperature).
- Narrow VDC (NVDC) power path management.
- Flexible autonomous and I2C mode for optimal system performance.
- High integration includes all MOSFETs, current sensing and loop compensation.
- High accuracy.
- Safety.
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