Key Technical Specifications
- Architecture: Dual-phase switched capacitor, optimized for a 50% duty cycle.
- Efficiency: Up to 97% efficiency to limit temperature rise during high-amp charging.
- Current Capacity: Supports up to 8-A battery charging.
- Cable Protection: Cuts the required cable current in half relative to what is delivered to the battery, protecting the physical cable from high-current damage.
- Integrated 12-bit ADC: Continuously monitors bus voltage, bus current, battery voltage, battery current, and temperature (die, bus, and battery).
- Built-in Protections: Features comprehensive input/output over-voltage (OVP) and over-current (OCP) safety mechanisms.
Common Applications & Compatible Devices
This BGA (Ball Grid Array) chip is widely used across major smartphone brands to manage fast-charging protocols. It is frequently found on the motherboards of devices from:
- Vivo: X23, X23A, X27, and NEX models
- Xiaomi: Mi Note 10
- Other Brands: Commonly used in specific fast-charging circuits for Oppo, Realme, Redmi, Infinix, and Tecno devices.
Common Repair Symptom
Technicians usually replace the BQ25970 IC when a smartphone displays:
- Complete failure to charge
- Failure to trigger “Fast Charging” or “Flash Charging” modes
- Power management integrated circuit (PMIC) related boot loops or USB power detection faults
Reviews
There are no reviews yet.