0.8A Step Down / Step Up / Inverting DC-DC Converter
MC34063C
Step-Up With External NPN Switch
V
OUT
S Q
V
IN
Voltage Inverting Converter
1
DRC
SWC
2
Ipk
SWE
Vcc
TC
V
IN
CII
GND
4.5V to 6V
100
MC34063C
V
OUT
-12V /100
Jan. 2007-Rev 1.0
HTC
6
C
2
+
R
2
C
3
1.5
R
3
R
1
D
1
BYV10-40
C
1
1000
+
L
1
8
7
6
5
3
4
0.4Ω
8.2KΩ
953Ω
-
+
R
sc
+
1
2
3
4
5
6
7
8
Q2
Q1
comparator
Ipk Oscillator
1.25V
Reference
Regulator
150μH
R
