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SA-WCT180
SA-WCT180
15
15
3-3. SCHEMATIC DIAGRAM - MAIN Board (2/3) -
• See page 20 for IC Block Diagrams.
A
3
8
6
E
2
D
5
B
C
7
1
4
(2/3)
MAIN BOARD
Close to U2_EUP3482A
Power-derating OP
POWER_18V
STB_5V
POWER_18V
PVDD
STB_5V
STB_3V3
STB_3V3
SYS_3V3
POWER_18V
STB_5V
SYS_5V
1
2
3
4
5
6
1
2
3
5
6
4
8
7
1
4
3
5
2
C7
100nF
C7
100nF
R4
51K/1%
R4
51K/1%
XS1
6PIN/2.5mm/40mm
XS1
6PIN/2.5mm/40mm
R183
10K
10K
R183
10K
10K
R218
0
R218
0
C17
N
C
/100nF
C17
N
C
/100nF
L4
10uH/1A
L4
10uH/1A
C184
2.2uF
C184
2.2uF
C296
NC/
100pF/
5
0V/
NP0
C296
NC/
100pF/
5
0V/
NP0
C183
2.2uF
C183
2.2uF
C84
NC/100nF
C84
NC/100nF
Q20
NC/NPN_3DG3904M
Q20
NC/NPN_3DG3904M
R190
15K
R190
15K
100U
F/
25V
CE20
100U
F/
25V
CE20
C36
100nF
C36
100nF
Q547
NC/PNP_MMBT8550C
Q547
NC/PNP_MMBT8550C
C3
0.
1uF
C3
0.
1uF
R26
NC/0
R26
NC/0
R170
47K/1%
R170
47K/1%
C18
N
C
/100nF
C18
N
C
/100nF
R1
56
56
R1
56
56
C4
330pF
C4
330pF
C1
N
C
/100nF
C1
N
C
/100nF
R193
NC/10K
R193
NC/10K
C152
NC/330pF
C152
NC/330pF
R5
47K
R5
47K
C77
100nF
C77
100nF
R6
22K
22K
R6
22K
22K
R11
7.5K
7.5K
R11
7.5K
7.5K
R102
NC/56
R102
NC/56
R13 NC/4.7K
R13 NC/4.7K
C76
100nF
C76
100nF
R192
NC/30K
R192
NC/30K
D
542
NC
D
542
NC
U2
EUP3482ADIR1
U2
EUP3482ADIR1
C13
100nF
C13
100nF
U8
TJ4203GSF5-ADJ
U8
TJ4203GSF5-ADJ
C6
10NF
C6
10NF
R194
NC/10K
R194
NC/10K
R12
11K
R12
11K
100uF/
16V
CE3
100uF/
16V
CE3
C
201
1uF/
50V/
X
7
R
C
201
1uF/
50V/
X
7
R
C
83
10uF/
1
0V/
X
X
7
R
C
83
10uF/
1
0V/
X
X
7
R
C33
N
C
/2.
2uF
C33
N
C
/2.
2uF
FB19
300/2A
FB19
300/2A
C14
3300pF//50V/X7R
C14
3300pF//50V/X7R
++
++
1
2
3
4
5
6
BS
IN
SW
FB
COMP
GND
SS
EN
VIN
ADJ/SENSE
EN
VOUT
GND
300mA 2.5V-6V
0.8*(47+15)/15=3.3v
45mA
D
D
D
D
D
D
D
D
D
D
LINK_LED_CON
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