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CHARGER, LOAD SW's
V_AC
V_USB
CHG_EN_N
USB_SUSPEND
USB Charging Current : 500mA
USB_HOST_EN
LGE Internal Use Only
Charger (1.5A)
V_LDO4_1V8
V_POWERRAIL
V_LDO4_1V8
U400
V_AC
1
AC_DET
PG1
2
18
D
PG2
_FLT
CHG_FAULT_N
19
Q407
3.0mm
_UOK
USB_DET_N
3
8
G
DC1
_DOK
4
V_POWERRAIL
22
DC2
_CHG
CHG_STAT_N
S
C401
0.1u
6
13
R407
DNI
V_POWERRAIL
BST
ISET
R408
820
27
11
R409
8.2K
LX1
IDC
AC_OK_N
L400
1u
28
LX2
3.0mm
24
V_BAT
SYS2
3.0mm
25
23
C402
10u
D
CS1
SYS1
26
Q405
V_CHG_FET
CS2
3.0mm
21
BAT2
VDD_5V0_HDMI
17
20
USB
BAT1
VL
S
5
9
DCM
VL
VL
U402
R421
0
14
_CEN
6
1
B1
S
5
2
R429
470K
7
16
GND
VCC
R423
0
IUSB
THM
4
3
15
B0
A
USUS
12
D401
GND
R411
R412
10
29
CT
BGND
10K
62K
3
from 0 to 45 celsius
C
BAT_THM
U403
6
1
B1
S
5
2
GND
VCC
4
3
B0
A
5V (USB HOST)
VDD_5V0
V_USB
Q402
Q404
4
1
1
4
EN
VOUT
VOUT
EN
USB_HOST_EN
3
2
2
3
VIN
GND
GND
VIN
5V (HDMI, WLED)
VDD_5V0_HDMI
VDD_5V0
Q409
4
1
VDD_5V0_HDMI_EN
EN
VOUT
3
2
VIN
GND
C431
1u
Battery Connector
V_CHG_FET
V_POWERRAIL
3.0mm
Q412
Q410
C404
1u
7
8
8
G
THM_VTG_SEL
UAC_IN
R422
AC_OK_N
AC_OK_N
10K
VDD_5V0
VL
1
A1
2
A2
Touch Panel Main Voltage
V_TCH_POWER
V_POWERRAIL
Q401
4
1
EN
VOUT
TOUCH_PWR_EN
3
2
VIN
GND
C412
1u
Touch Panel IO Voltage
VDD_3V3_ALWAYS
V_TCH_3V3
Q408
4
1
TOUCH_IO_EN
EN
VOUT
3
2
VIN
GND
- 154 -
Fuel Gauge
V_BAT
CN401
G2
V_BAT
3.0mm
5
4
3
R404
BAT_THM
2
1
150
3
ZD400
C423
VDD
7
G1
0.1u
C424
10n
8
PWR_I2C_SDA
SDA
7
PWR_I2C_SCL
SCL
ZD400 must be placed closely to CN401
USB
USB1_VBUS
V_USB
FB400
C429
C409
0.1u
R419
1u
1M
V_LDO3_3V3
D
Q406
G
S
D
C428
0.1u
S
Copyright © 2011 LG Electronics. Inc. All right reserved.
7. CIRCUIT DIAGRAM
V_BAT
R406
R405
U401
100K
150
2
CELL
C425
1u
5
SEO
6
EO
1
CTG
4
C405
GND
1u
Q403
G
USB_HOST_EN
Only for training and service purposes
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Troubleshooting
