Datasheet

6 Application information
Figure 4. Fixed output regulator
C
I
= 2.2 µF
-V
I
-V
I
C
O
= 1 µF
IN
GND
OUT
L79
Note: C
I
is required for stability. For value given, capacitor must be solid tantalum. If aluminium electrolytic are used, at
least ten times value should be selected. C
O
is required if regulator is located an appreciable distance from
power supply filter. To improve transient response. If large capacitors are used, a high current diode from input
to output (1N4001 or similar) should be introduced to protect the device from momentary input short circuit.
Figure 5. Split power supply (±15 V - 1 A)
1N4001
1N4001
L7815
L7915
* Against potential latch-up problems
-15V-20V
+20V
+15V
0.33µF
0.1µF
1µF
2.2µF
L79
Application information
DS0428 - Rev 24
page 11/29