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DC-DC Converter Control Circuits
MC34063A
TYPICAL APPLICATION CIRCUIT
Step-Up Converter
DRC
SWC
Ipk
SWE
Vcc
TC
VIN
CII
GND
VOUT
12V
25V/175㎃
MC34063A
Step-Down Converter
DRC
SWC
Ipk
SWE
Vcc
TC
VIN
CII
GND
25V
MC34063A
VOUT
5V/0.5A
HTC
6
C2
100㎌
+
R1
C3
1.5㎋
R3
Rsc
R2
D1
BYV10-40
C1
330㎌
+
L1
8
7
6
5
1
2
3
4
180Ω
0.22Ω
2.2KΩ
44KΩ
170μH
C2
100㎌
+
R1
C3
470㎊
Rsc
R2
BYV10-40
D1
C1
470㎌
+
220μH
L
8
7
6
5
1
2
3
4
0.33Ω
1.2KΩ
3.5KΩ