Description

Original spare part for regulating voltages in secondary power paths and supporting charging interfaces.
– Model number: PMI8953 (Often printed as 878B).
– Type: Secondary Power Management Unit.
– Function: Voltage regulation for secondary power (such as audio or display power units) and management of charging interfaces.

– Common Faults:
– Complete disconnect due to a short circuit.
– Non-charging due to charging sequence failure.
– Power leakage when in sleep mode.

– Compatibility:
– Used in Snapdragon devices from 2016-2018 like Xiaomi Redmi Note 4X and 5, and Samsung Galaxy S7 / S8 / Note 8 (Snapdragon versions).