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3. TECHNICAL BRIEF
PRE CHARGING
R220
CHG_DET
0
R222
CHG_EN
0
NORMAL CHARGING
BATT_TEMP
R116
120K
LGE Internal Use Only
2V8_VEXT
VCHARGE
R218
R219
NA
100K
C228
R224
NA
1u
ECZH0001215
(10V,K,X5R)
Figure 3.4.1.F1 CIRCUIT FOR BATTERY CHARGING
1V8_VRTC
VCHG_ABB
C134
VBAT
0.1u
R111
68K
C139
0.1u
Figure 3.4.1.F2 CIRCUIT FOR BATTERY CHARGING
CHARGING IC
U202
1
8
VIN
BAT
2
7
_PPR
IREF
3
6
_CHG
IMIN
4 _EN
5
GND
9
PGND
ISL6294
EUSY0292601
KEY_BACKLIGHT
LCD_BACKLIGHT_CTRL
C131
R109
2.2K
C133
RF_TEMP
4.7u
LCD_ID
BT_LDO_EN
CHG_EN
AMP_SHDN
KEY_ROW0
POWERKEY
BT_PCM_CLK
Copyright © 2008 LG Electronics. Inc. All right reserved.
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VBAT
C226
1u
ECZH0001215
(10V,K,X5R)
R225
R223
240K
30K
(1%)
(1%)
F14
LIGHT1
H13
LIGHT2
J15
LIGHT3
P8
GPO_22
T12
VMEMSEL
1u
D17
REF
C15
NC14
C14
NC15
A13
TEMP2
A14
AUXADC1
B14
AUXADC2
T13
VRTC
C12
VCHG
A12
GATEDRIVE
C13
ISENSE
B13
VBATSENSE
F17
REFCHG
B12
BATTYPE
F5
GPIO_18_TCK_DBB
F2
GPIO_19_TMS_DBB
F6
GPIO_20_TDI_DBB
G3
GPIO_21_TDO_DBB
F4
JTAGEN
T16
KEYOUT
U17
KEYON
M5
Only for training and service purposes
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