Charging - LG -D175F Service Manual

3.6 Charging

D175F uses PMIC(liner Charger) for charging control. The PMIC circuit includes the charging pass transistor detects the VDD and
VBAT voltages, and its control driver. The PMIC maximum charging current is set around 700mA.
Charging Procedure
- Supply the VCHG use a TA or u-USB cable
- The PMIC control the charging current
- Charging current flows into the main battery
Troubleshooting Check Point
- Connection of the TA or u-USB cable
- Main battery
VBUS_USB_IN
C4113 470n
0709_change
0.1u
C4114
1u
C4115
LGE Internal Use Only
98
USB_IN_1
114
USB_IN_2
83
VREG_IADC
49
AVDD_BYP
U4100
113
VPRE_BYP PM8110
U4100
PM8110
- 118 -
3. TROUBLE SHOOTING
117
VDRV_P
106
VCHG
107
GND_CHG_HP_1
116
GND_CHG_HP_2
111
TP4110
BATFET_CP_DRV
99
VSW_CHG_1
115
VSW_CHG_2
103
VPH_PWR_1
104
VPH_PWR_2
112
VPH_PWR_3
80
VBAT_SNS
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