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Schematic Drawings
SC120/SC121 EVB
TP3
VIN
R3
J1
VIN
SW1
TP4
5
4 2
EN
TP2
TP7
GND
GND
6
Down
SW PUSHBUTTON
DPDT
SC120SK EVB
TP3
VIN
R3
J1
VIN
SW1
TP4
5
4 2
EN
TP2
TP7
GND
GND
6
Down
SW PUSHBUTTON
DPDT
R4
0
JP1
J_LOOP
1
2
U1
3
100kΩ
4
2
C1
C4
1
10μF
10μF
3
Up
R4
0
JP1
J_LOOP
1
2
U1
1
100kΩ
6
2
C1
C4
1
10μF
10μF
3
Up
PTP2
TP1
LX
L1
4.7μH
SC120UL/
SC121UL
1
IN
LX
6
EN
OUT
5
GND
FB
T
C3
PAD
10μF
PTP2
TP1
L1
4.7μH
SC120SK
3
IN
LX
4
EN
OUT
5
GND
FB
C3
10μF
SC120/SC121 EVB
TP6
VOUT
C5
R6
0Ω
No
pop
R1
499kΩ
C2
R2
1MΩ
10μF
LX
TP6
VOUT
C5
R6
0Ω
No
pop
R1
499kΩ
C2
R2
1MΩ
10μF
No
R5
J2
Pop
VOUT
JP2 - ENL
1
2
TP8
TP9
GND
GND
No
R5
J2
Pop
VOUT
JP2 - ENL
1
2
TP8
TP9
GND
GND
3
3
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