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N
C
_
T
1
5
N
C
_
R
1
V
M
E
M
S
E
L
G
N
D
_
N
E
T
1
N
C
_
G
1
6
N
C
_
B
7
N
C
_
B
5
V
B
A
T
S
E
N
S
E
V
C
H
G
S I
E
N
S
E
G
A
T
E
D
R
V I
E
Trickle-
CHARGING
Figure 3-21 CIRCUIT FOR BATTERY CHARGING AT AD6537B
In order to reduce time for trickle charging, additional circuit(Pre-charge circuit) was included.This circuit
has supplied Max 160mA current into the battery additionally.
So call it, it reduce trickle charging time
T
1
5
R
1
R
3
T
5
G
1
6
B
7
B
5
B
8
A
5
A
7
A
6
R
3
5
P
R
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C
H
A
R
G
E
1
5 .
V
B
A
T
R
1
0
8
0
2 .
1
9
R
0
Q
1
0
0
G
4
D
3
3
D
2
2
D
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8
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3
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1 .
u
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3
1
K
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K
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M
X
9
T
1
1
0
Q
3
0
1
- 37 -
3. TECHNICAL BRIEF
NORMAL
CHARGING
V
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H
A
R
G
E
C
1
2
7
D
1
0
0
1
0
u
C
U
S
0
2
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3
3
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D
4
6
D
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7
D
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2
V
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A
T
V
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T
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3
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6
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0
1
2
1 ,
%
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3
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2
1
5
5
3
3
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3
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6
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4
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2
2
S
C
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5
8
4
7
K
1
C
3
2
4
0
1 .
u
5
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