MC34063A
DC/DC CONVERTER CONTROL CIRCUIT
SPEC NO: DS34063A-P2
!
APPLICATION EXAMPLES
(CONTINUED)
1
DRI
2
L
100µH
CT
680pF
V
OUT
-12V/100mA
+
D1
1N5819
3
4
IPK
VCC
FB
8
7
S
RS
0.25
V
IN
4.5V~6V
CS
SE
TC 6
GND 5
+
C1
100µF
MC34063A
C
O
470µF
RA
953
RB
8.2K
Line Regulation
Load Regulation
V
IN
= 4.5V ~6V @ I
O
=100mA
V
IN
= 5V, @ I
O
=10mA ~ 100mA
Fig.5 Inverting Converter
20mV
100mV
R2
8 DRI
RS
V
IN
+
C1
7 IPK
6 VCC
5 FB
CS 1
SE 2
TC 3
GND 4
MC34063A
L
CT
D1
R1
Q1
RA
RB
CO
+
V
OUT
Fig 6. Voltage Inverting Converter With PNP Saturated Switch
ANALOG INTEGRATIONS CORPORATION
4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C.
www.analog.com.tw
TEL: (8863)577-2500 FAX:(8863)577-2510
8
AIC [ ANALOG INTERGRATIONS CORPORATION ]
