Compatible Mobile Device Models
This specific IC variant is heavily utilized in budget and mid-range smartphones, most notably within the following popular models: [
- Xiaomi Redmi Series: Redmi 8, Redmi 8A, Redmi Note 8, and Redmi Note 8T.
- Xiaomi Poco Series: Poco M3.
- Samsung Galaxy Series: Galaxy A20S and Galaxy A32.
- Oppo devices.
Key Specifications & Features
- Functionality: Optimizes battery power distribution, steps down system voltages, and acts as a charging controller.
- Package Type: Surface-mount SMD (Surface Mount Device) BGA chip.
- Pins/Ball Count: Typically structured as a 72-pin configuration mapping out lines for VPH_PWR, USB_IN, VBATT, and SPMI data paths.
- Operating Profile: Operates with high thermal stability and delivers reliable system voltage regulation under normal phone operations.
Typical Symptoms of a Failing PMI632 902 IC
If you are troubleshooting a phone motherboard and suspect this chip is dead, it usually presents the following board-level errors:
- Fake Charging: The device shows the charging icon but the battery percentage never increases, or it draws very low amperage (e.g., 0.1A to 0.4A) on a USB detector toolkit.
- Dead Phone (No Power): A complete short on the main VPH_PWR line or secondary power rails tied directly to this PMIC will prevent the phone from booting.
- No Display / No Backlight: Because it handles display power distribution lines on certain architectures, a faulty chip can leave the screen completely blank despite the phone vibrating or turning on.
Reviews
There are no reviews yet.