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NWZ-A826/A826K/A828/A828K/A829
33
IC901 MAX8671CETL+TG069
– SW Board –
IC801 TPS60231RGTR
35
SYS
REF
1USUS
2DC
Li+/Li-PoLY
BATTERY
CHARGER &
SYSTEM LOAD
SWITCH
SMART
POWER
SELECTOR
SMART
POWER
SELECTOR
& CHARGER
BIAS
36
PEN1
37
CST2
38
/UOK
39
CST1
40
PEN2
41
EP
31
CISET
32
CT
33
THM
12
/DOK
17
BVSET
13
REG3L
19
FB1
18
GND
30 DISET
29 FB3
28 VL
27 PV3
26 LX3
25 PG3
24 PG1
23 LX1
22 PV1
21 SSKP
4FB5
5PV5
6OUT5
7PG2
8LX2
9PV2
20
EN
16
PV4
15
OUT4
14
BP
11
FB2
3USB
34
BAT
10/CEN
3.3V LOW
DROPOUT
HIGHEST
VOLTAGE
SELECTOR
REG1 DC-DC
CONVERTER
REG3 DC-DC
CONVERTER
REG4 LOW
DROPOUT
REG5 LOW
DROPOUT
REG2 DC-DC
CONVERTER
14
GND
15
EN1
16
EN2
13
VIN
11 C1
−
12 C2
−
10 C1+
9C2+
2NC
1ISET
3NC
4D3
6
D1
5
D2
8
VOUT
7
PGND
CHARGE
PUMP
CURRENT
SINKS
CONTROL
REFERENCE
IC903 TK63118BCB-G
OVER CURRENT
THERMAL &
PROTECTION
CONTROL
ON / OFF
REGULATOR
VOLTAGE
B1
VOUT
VCONT
GND
A1
REFERENCE
A2
B2
VIN