Key Technical Specifications
- Fast Charging Support: Delivers up to 5-A charging current for single-cell Li-Ion or Li-polymer batteries.
- High Efficiency: Offers 93% efficiency at 2 A and 91% efficiency at 3 A charging current.
- Wide Input Range: Supports input voltages from 3.9 V up to 14 V, making it highly optimized for 9 V and 12 V high-voltage fast-charging adapters.
- Smart Detection: Automatically detects USB SDP, CDP, DCP, and non-standard power adapters.
- Programmability: Configurable internal parameters managed entirely via an I2C system interface.
Common Symptoms of a Faulty BQ25890H
If you are troubleshooting a motherboard and consider replacing this IC, look for these common device issues:
- Device not taking any charge or showing zero current draw.
- Fake charging (the charging icon is visible, but the battery percentage drops or stays stuck).
- Phone overheating significantly near the power management area of the logic board.
- Complete “dead phone” or power-on failure due to a short circuit on the main power lines.
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