Battery Voltage Monitor - LG KM555 Service Manual

3. BB Circuit Technical brief

3.11 Battery voltage monitor

S-Gold3H(PMB8878) is monitor battery capacity with ADC port.
VBAT
R105
DNI
2008 LG Electronics. Inc. All right reserved.
LGE Internal Use Only
BAT_ID
RF_TEMP
R116
390K
(1%)
R123
100K
(1%)
PA_LEVEL
[Figure3.12-1] Battery voltage monitor circuit diagram
- 48 - Copyright © 2009 LG Electronics. Inc. All right reserved.
F3
M0
G4
M1
E2
M2
D1
M3
F4
M4
E3
M5
D3
M6
E4
M7
D2
M8
D4
M9
F5
M10
P4
PAOUT1_1
M8
PAOUT1_2
Only for training and service purposes