LG -A100 Service Manual page 19

Linear voltage Regulators (low dropout) LDOs
The LDOs are used to generate the supply for the different supply domains not directly supplied out of the
DC/DC converter.
LCORE
The LCORE LDO provides the VCORE supply used for most of the digital parts of the chip
LPMU
The LPMU provides VPMU sued for the PMU supply, e.g. for the startup state machine and analog parts like ADC,
sense amplifier etc.
LAUX
The LAUX generates VAUX. It is a general purpose LDO and can be used for different functions depending on the
phone application, e.g. for the display or Camera.
LSIM
The LSIM LDO generates the VSIM supply for the SIM card and interface. It is designed to supply Standard SIM
cards.
Other LDOs
The RF module has implemented several LDO's for different RF Power domain.
The mixed signal module has some LDO's for the audio driver and microphone supply.
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