LG GD510 Service Manual page 29

3. Technical brief
GD510 Operational Description
Battery Connector
VBAT
C424 C415 C431
39p 100p 2.2u
R417 1K
BAT_ID
C422
R414
100p
DNI
3.3.2. Charging
SM-POWER provides an external AC-adapter a complete charge control function for charging of
Li-Ion or Li-Ion-Polymer batteries. Either a 1-cell Li-Ion or Li-Ion-Polymer battery with 4.1, 4.2 or 4.4
Volts may be used.
4.2V~3.69V
1. Charging method : CC-CV
2. Charger detect voltage : 4.0 V
3. Charging time : 2h 40m
4. Charging current : 380 mA
5. CV voltage : 4.2 V
6. Cutoff current : 110 mA
7. Full charge indication current (icon stop current) : 110 mA
8. Recharge voltage : 4.16 V
9. Low battery alarm
a. Idle : 3.43 V ~ 3.3 V
b. Dedicated : 3.53 V ~ 3.3 V
10. Low battery alarm interval
a. Idle : 3 min
b. Dedicated : 1 min
11. Switch-off voltage : 3.3 V
12. Charging temperature adc range
a. ~ -5 : low charging voltage operation (3.6 V ~ 3.9 V) .
b. -5 ~ 50 : standard charging (up to 4.2 V)
c.
50 ~ : low charging voltage operation (3.6V ~ 3.9V)
LGE Internal Use Only
LG Electronics
RPWRON_EN
D1
1
2
RPWRON
3
D2
CN402
KQ03LE-3R ENZY0022901
Figure 4 SM-Power Circuit Diagram with charging part
3.69V~3.53V 3.53V~3.43V
Figure 5 Battery Block Indications
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Single Charging IC for uUSB
V_BUS
PGND
1
IN BAT
2
U402
ISET _PG
BQ25040
3
VSS1 CHG
4
LDO VSS2
5
IFULL EN_SET
R410
130K
C401 C409
R405 R406
1uF 1uF
1.2Kohms 3.3Kohms
R411
130K 1%
1%
(450mA) (60mA)
3.43V~3.35V
Copyright © 2009 LG Electronics. Inc. All right reserved.
Revision A
VIO_2V62
VBAT
VIO_2V62 VIO_2V62
R409 R408 R407
DNI 100Kohms 100Kohms
11
10
9
_PPR
8
CHG_EOC
7
6
_CHG_EN
C411
1uF
LGE Property
Only for training and service purposes