Data Sheet

LM79XX
12
Typical Applications
Figure 6. Negative Fixed output regulator
Figure 7. Split power supply ( ± 12V/1A)
Notes:
(1) To specify an output voltage, substitute voltage value for "XX "
(2) Required for stability. For value given, capacitor must be solid tantalum. If aluminium electronics are used, at least ten times
value shown should be selected. C
I
is required if regulator is located an appreciable distance from power supply filter.
(3) To improve transient response. If large capacitors are used, a high current diode from input to output (1N400l or similar)
should be introduced to protect the device from momentary input short circuit.
2.2μF
2
- VI
- VO
KA79XX
1
3
++
1
μF
C
I
CO
Input
Output
LM79XX
1N4001
2.2μF
2
- 15V
-12V
KA7912
1
3
++
1
μF
0.33
μF
+
KA7812
+ 15V
+12V
+
1μF
1
2
3
1N4001
GND
*
*
MC7812
LM7912
Co
Co
C1
C1