KIA78R000F/PI~KIA78R050F/PI
Fig. 3 Ripple Rejection Test Circuit (Adjustable-Type)
V
IN
V
OUT
R2
ei
GND
+
_
V
IN
0.33µF
A
I
Q
R1
1ΚΩ
10µF
R
L
f=120Hz(sine wave)
ei=0.5Vrms
RR=20log(ei/eo)
Adj
A
I
o
V
e
o
Fig. 4 Ripple Rejection Test Circuit (Fixed-Type)
V
IN
V
OUT
e
i
GND
47µF
0.33µF
V
IN
A
I
Q
R
L
V e
o
+
_
f=120Hz(sine wave)
ei=0.5Vrms
RR=20log(ei/eo)
Fig. 5 Application Circuit for Standard (Fixed-Type)
V
IN
+
_
C
IN
4
ON/OFF
signal
CMOS or TTL
High
: Output ON
Low or Open : Output OFF
Specific IC
3
C
OUT
Load
1
2
V
OUT
C
IN
: More than 0.33 F required if regulator is located an appreciable distance from power supply filter.
You must use to prevent from the parasitic oscillation.
C
OUT
: More than 47 F. You must use the Low-impedance-type(low ESR) capacitor.
2005. 11. 8
Revision No : 3
8/10