LM317, NCV317
100
C
Adj
= 10
mF
RR, RIPPLE REJECTION (dB)
RR, RIPPLE REJECTION (dB)
80
60
40
20
0
0
5.0
10
15
20
25
30
35
V
out
, OUTPUT VOLTAGE (V)
V
in
− V
out
= 5 V
I
L
= 500 mA
f = 120 Hz
T
J
= 25°C
Without C
Adj
120
100
80
60
40
20
V
in
= 15 V
V
out
= 10 V
f = 120 Hz
T
J
= 25°C
0.1
1.0
10
C
Adj
= 10
mF
Without C
Adj
0
0.01
I
O
, OUTPUT CURRENT (A)
Figure 13. Ripple Rejection versus Output
Voltage
Figure 14. Ripple Rejection versus
Output Current
100
RR, RIPPLE REJECTION (dB)
80
60
40
20
0
10
100
1.0 k 10 k
100 k
1.0 M 10 M
f, FREQUENCY (Hz)
I
L
= 500 mA
V
in
= 15 V
V
out
= 10 V
T
J
= 25°C
Z O, OUTPUT IMPEDANCE (
Ω
)
10
1
10
0
V
in
= 15 V
V
out
= 10 V
I
L
= 500 mA
T
J
= 25°C
Without C
Adj
10
−1
10
−2
C
Adj
= 10
mF
10
−3
10
100
1.0 k
10 k
100 k
1.0 M
f, FREQUENCY (Hz)
C
Adj
= 10
mF
Without C
Adj
Figure 15. Ripple Rejection versus Frequency
Figure 16. Output Impedance
ΔV
out , OUTPUT
VOLTAGE DEVIATION (V)
ΔV
out , OUTPUT
VOLTAGE DEVIATION (V)
3.0
2.0
1.0
0
−1.0
−2.0
−3.0
C
L
= 0;
Without C
Adj
1.5
1.0
0.5
0
0
10
20
t, TIME (ms)
30
40
I
L
V
in
= 15 V
V
out
= 10 V
I
NL
= 50 mA
T
J
= 25°C
C
L
= 1.0
mF;
C
Adj
= 10
mF
1.5
1.0
0.5
0
−0.5
−1.0
−1.5
1.0
0.5
0
0
10
20
t, TIME (ms)
V
in
30
40
V
out
= 10 V
I
L
= 50 mA
T
J
= 25°C
C
L
= 1.0
mF;
C
Adj
= 10
mF
Δ
V in , INPUT
VOTLAGE CHANGE (V)
Figure 17. Line Transient Response
IL , LOAD
CURRENT (A)
C
L
= 0;
Without C
Adj
Figure 18. Load Transient Response
http://onsemi.com
6
ONSEMI [ ON SEMICONDUCTOR ]
