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VCC-BAT
CN4
BATT CONN
C34
2.2uF
VCC-3.3V
E4
10uF
R26
100K
VCC-1.8V
1
2
3
5
4
Vin
GND
EN
ADJ
Vout
U5
AP7331-ADJ
R29
27K4
R30
1K
D1
PMEG3010ER
VCC-SYS
VCC-BAT
VCC-USB
R34
10K
M1
DMP2160UW
VCC-SYS VCC-3.3V
E9
10uF
E10
10uF
R47
2K2
3
1
2
GND
Vin
Vout
REG1
LD29080DT33
POWER
LD2
VCC-3.3V
VCC-BAT
R46
3K9
Charging Current approx. 250mA
R37
4K7
VCC-3.3V
E7 10uF
C41
2.2uF
R35
100K
R31
100K
VCC-BAT
VCC-SYS
R43
10K
R39
10K
VCC-3.3V
R42
10K
R41
1K
VCC-3.3V
E8
10uF
R38
10K
VCC-3.3V
R33
100K
1
2
3
4
5
STAT
VSS
VBAT VDD
PROG
U6
MCP73832
LD1
CHARGE
Q4
BC846
Q5
BC846
VSENSE
STAT
VCC-1.8V
VREF-1.8
FP4
VCC-3.3V
AVCC
FP1
C5
100nF
C9
100nF
HDR1
M1X26
VCC-3.3V
VCC-SYS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
HDR2
M1X26
VCC-3.3V
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
Figure 1-3: Power supply schematics
DA
TA BUS