Key Technical Specifications
- Input Voltage Range: Supports a wide 3.9-V to 14-V input, accommodating standard USB ports as well as high-voltage fast-charging wall adapters.
- Current Limits: Programmable input current limit ranging from 100 mA to 3.25 A.
- Charging Current: Delivers up to 5-A fast charging capability with high-efficiency buck regulation to minimize heat dissipation.
- USB OTG Support: Includes an integrated USB On-the-Go boost mode capable of supplying power back to connected external devices.
- Control Interface: Uses an I²C serial interface for system control, status tracking, and programming register configurations.
Common Applications & Compatible Brands
This IC is a vital power component frequently replaced during hardware-level board repairs when a device stops charging, over-heats, or fails to turn on. It is commonly found in motherboards from:
- Xiaomi / Redmi (e.g., Redmi Note 3, Mi 5C)
- Oppo & Vivo (e.g., Vivo V9)
- Infinix & Tecno
- Meizu & Letv
If you are replacing a faulty component on a mobile PCB board, ensure you verify whether your specific circuit schematic demands the standard BQ25890 or the BQ25890H variant, as their specific high-voltage handshake parameters differ slightly.
Reviews
There are no reviews yet.