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Figure 3-21. CIRCUIT FOR BATTERY CHARGING AT AD6537B
Pre-CHARGING
2V8_VEXT
RPWRON
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
T15
NC_T15
R1
NC_R1
R3
VMEMSEL
T5
GND_NET1
G16
NC_G16
B7
NC_B7
B5
NC_B5
B8
VBATSENSE
A5
VCHG
A7
ISENSE
A6
GATEDRIVE
VCHARGE
ERHZ0000757
C220
R219
(5%,1/10W)
15
1u
Q401
R610
100K
R224
NA
R227
NA
UMX1NTN
- 39 -
3. TECHNICAL BRIEF
VBAT
VCHARGE
C125
(2012)
(1%)
1u
D102
CUS02
R105
330
Q100
G
S
4
5
D3
D4
3
6
D2
D5
2
7
D1
D6
1
8
TPCF8102-TE85L-F
VBAT
VCHARGE
R222
R223
0
1K
LD200
2SC5585
R225
2
Q200
7.5K
R226
R228
10K
20
NORMAL
CHARGING
C126
4.7u
3
1
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