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3. TROUBLE SHOOTING
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Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
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
Troubleshooting Check Point
- Connection of the TA or u-USB cable
- Main battery
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C4118(TP1)
4.7u
C4117
1u
L4110
C4116
22u
112
104
103
115
99
96
95
87
80
111
116
107
117
44
37
43
106
VCHG
VREG_S1
VSW_S1_1
VSW_S1_2
VDRV_P
GND_CHG_HP_1
GND_CHG_HP_2
BATFET_CP_DRV
VBAT_SNS
VBAT_1
VBAT_2
VBAT_3
VSW_CHG_1
VSW_CHG_2
VPH_PWR_1
VPH_PWR_2
VPH_PWR_3
VBAT_SENSE
VBAT
100n
C4110
+VPWR
TP4110
C4118
10u
1.15V/2.5A/HF-SMPS
Rev 0.4
Note
directly to the positive terminal of battery connector.
Ensure that the BAT_SNS pin of the PMIC is connected
4.7K
R9105
R9107
0
KQ03L2-4R
CN9100
EAG63370901
4
3
2
1
G1
G2
C9104
33n
VA9100
VA9101
ZD910
0
R9106
120
C9100
47
u
R9104
150K
R9102 36K
VBAT
VREF_BAT_THERM
C9103
1u
C9102
100p
C9101
100n
VREF_BAT_THERM
VBAT_SENSE
VBAT_THERM
BAT_ID
Routing Width 2mm
C4118(TP1)