Charging - LG -D385 Service Manual

3.6 Charging

D385 uses PMIC 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 800mA.
Charging Procedure
- Supply the VCHG use a TA or u-USB cable
- The Chager IC control the charging current
- Charging current flows into the main battery
117
VDRV_P
106
Troubleshooting Check Point
VCHG
107
GND_CHG_HP_1
116
GND_CHG_HP_2
- Connection of the TA or u-USB cable
111
TP4110
BATFET_CP_DRV
99
VSW_CHG_1
- Main battery 115
VSW_CHG_2
103
VPH_PWR_1
104
VPH_PWR_2
112
VPH_PWR_3
80
VBAT_SNS
87
VBAT_1
95
VBAT_2
96
VBAT_3
1.15V/2.5A/HF-SMPS
43
VREG_S1
37
VSW_S1_1
44
VSW_S1_2
Routing Width 2mm
VBAT
VBAT_SENSE
VREF_BAT_THERM
VBAT_THERM
BAT_ID
VREF_BAT_THERM
LGE Internal Use Only
C4118(TP1)
R9107
0
R9104 150K
R9102 36K
R9105 4.7K
C9104
33n
VA9100
<Main Top>
Note
Ensure that the BAT_SNS pin of the PMIC is connected
directly to the positive terminal of battery connector.
VBAT
C4118 10u
C4118(TP1)
- 129 - Copyright © 2014 LG Electronics. Inc. All right reserved.
3. TROUBLE SHOOTING
C4110
L4110
1u
C4116
VBAT_SENSE
22u
Rev 0.4
C4117
4.7u
CN9100
G1
1
2
3
R9106 4
120
G2
EAG63370901
VA9101 KQ03L2-4R
Only for training and service purposes
100n
+VPWR