LG GW520 - Page 35

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LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. BB Circuit Technical brief
GW520 service manual
[Figure 3.3.2-1] Charging IC (BQ25040)
[Table 3.3.2-1] PIN description of Charging IC
(25V,K,X5R, 1608)
(10V,K,X5R, 1005)
ECZH0003503
ECZH0001215
2V62_VIO
VBUS_USB
R313
100K
C330
1u
C331
1u
R312
100K
R315
820 2K
R314
C332
0.1u
DNI
R311
LDO
4
PGND
11
3
VSS1
VSS2
7
_PG
9
U302 BQ25040
EUSY0388501
10
BAT
8
CHG
6
EN_SET
1
IN
ISET
2
ITERM
5
2V62_VIO
2V62_VIOVBAT
_CHG_EOC
_CHG_EN
_PPR
RPWRON_EN