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30
NW-S603/S605/S703F/S705F/S706F
IC2701
TK63727BCB-G
IC601
MAX8670A
1
USB_SUS
22 IU4
23 PG_IO
24 LX_IO
25 IN_IO
26 OUT_CORE
27 IN_CORE
28 LX_CORE
29 PG_AORE
30 EN
21 OUT_IO
USB POWER
MANAGEMENT
2
USB_H/L
3
USB_IN1
4
USB_IN2
5
SYS1
6
SYS2
7
BAT1
8
BAT2
9
XCHG_STAT
10
XCHG_EN
33
IU6
34
IN_USB3.3
35
OUT_USB3.3
36
VL
37
IU7
38
IU8
39
IU9
40
USB_POK
41
SHEELD
32
XCHG_FLT
31
IU5
11
THM
12
CHG_ISET
13
CT
14
GND
15
IU1
16
IN_AD
17
OUT_AD
18
IU2
19
BP
20
IU3
CORE
STEP-DOWN
REGULATOR
I/O
STEP-DOWN
REGULATOR
REF
1MHz OSC
LI+BATTERY
CHARGER
AND
SYS LOAD SWITCH
USB LDO 3.3V
REGURATOR
REG5
3.3V
A/D LDO 2.0V
REGURATOR
SEQUENCER
(FIGURE 7)
INPUT LIMITER
AND
CHARGER THERMAL
REGULATION
THERMAL-OVERLOAD
PROTECTION ABOVE TJ=+165 C
PWM
A1
GND
A2 VCONT
B2 VIN
B1
VOUT
ON/OFF
CONTROL
VREF
+
–
THERMAL &
OVER CURRENT
PROTECTION