Table of Contents
Advertisement
3.3.2 Charging control
-
is use external charging IC
GM310
-Charging IC is ISL9221
1.
Charging method : CC-CV
2.
Charger output voltage : 5.1 V
3.
Charging time : 2h 10m
4.
Charging current : 600 mA
5.
CV voltage : 4.2 V
6.
Cutoff current : 117 mA
7.
Full charge indication current (icon stop current) : 117 mA
8.
Recharge voltage : 4.15 V
9. Low battery alarm
a. Idle : 3.45 V ~ 3.31 V
b. Dedicated : 3.45 V ~ 3.3 V
10. Low battery alarm interval
a. Idle : 3 min
b. Dedicated : 1 min
11. Switch-off voltage : 3.31 V
12. Charging temperature adc range
a. ~ -20
: low charging voltage operation (3.
℃
b. -20
℃
~ 60
℃
.
c
60 ~ : low charging voltage operation (3.6V ~ 3.9V)
℃
C
H
A
R
G
N I
_
E
O
C
C
H
G
_
E
N
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
: standard charging (up to 4.2 V)
G
C I
U
S
B
_
V
C
H
G
V
C
H
G
2
V
6
2
_
V
O I
2
V
1
1
_
R
T
C
R
2
2
7
R
2
2
8
1
0
0
K
1
0
0
K
_
P
P
R
C
2
5
7
C
2
5
8
1
u
1
u
[Figure 3.3.2-1] Charging IC (ISL9221)
GM310f service manual
6 V ~ 3.9 V) .
U
2
0
4
S I
L
9
2
2
1
1
3
P
G
N
D
1
V
D
C
1
2
V
D
C
_
B
Y
P
2
V
U
S
B
1
1
B
A
T
3
_
P
P
R
1
0
U
S
B
_
B
Y
P
4
_
C
H
G
9
V I
D
C
5
_
E
N
8
G
N
D
6
I
M
N I
7
U I
S
B
1
1
7
m
A
3
7
8
m
A
6
0
0
m
A
R
2
3
1
R
2
2
9
R
2
3
0
1
8
K
4
7 .
K
1
1
3 .
K
1
%
1
%
1
%
- 31 -
3. BB Circuit Technical brief
V
B
A
T
O
V
P
_
V
C
H
G
O
V
P
_
V
U
S
B
C
2
5
9
C
2
6
0
C
2
6
1
1
u
1
u
1
u
LGE Internal Use Only
Advertisement
Table of Contents
Troubleshooting
