Power

I2C controlled two cell battery charger for USB input

1st March 2019
Alex Lynn
0

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.

To learn more, click here.

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