Huawei P20 - Camera Tips

EML-L29V100R001 Advanced Maintenance Manual V2.1
INTERNAL
2019-6-25
Huawei Confidential
Page 11 of 67
Subsystem
Module
Unit
Function
power
management
function
management
RTC current.
Power management
of board circuits
(power-on and
power-off analysis)
Mainly refers to the LDO, which manages the
power supply flexibly. The board software
manages power supplies to circuits on the
board based on service status, protocols, or
power-saving analysis to reduce power
consumption. Three channels of 32 kHz clocks
are provided.
Charging IC
Supports dynamic path management, charges
the battery while providing power, and
prioritizes power supply.
RF PMIC
Provides the RF core voltage.
2.3 PCBA Components and BOM Information
The following is the PCBA component document.
PC B A
C o m p o nents inEM L-L29V 100R 001A d vanced M aintenance M anual_V 2.0-20180227.xlsx