LM317, NCV317
100
80
60
40
20
0
C
= 10 mF
Adj
120
100
80
Without C
Adj
C
= 10 mF
Adj
Without C
Adj
60
V
- V = 5 V
out
in
40
V
= 15 V
= 10 V
f = 120 Hz
in
I = 500 mA
L
V
out
f = 120 Hz
T = 25C
J
20
T = 25C
J
0
0.01
0
5.0
10
15
20
25
30
35
0.1
1.0
10
I , OUTPUT CURRENT (A)
O
V , OUTPUT VOLTAGE (V)
out
Figure 13. Ripple Rejection versus Output
Voltage
Figure 14. Ripple Rejection versus
Output Current
1
0
10
100
80
60
40
20
0
I = 500 mA
V
V
= 15 V
L
in
10
V
V
= 15 V
= 10 V
= 10 V
in
out
I = 500 mA
out
L
T = 25C
J
T = 25C
J
-1
-2
-3
10
10
10
Without C
Adj
C
= 10 mF
C
= 10 mF
Adj
Adj
Without C
Adj
10
100
1.0 k 10 k
100 k 1.0 M 10 M
10
100
1.0 k
10 k
100 k
1.0 M
f, FREQUENCY (Hz)
f, FREQUENCY (Hz)
Figure 16. Output Impedance
Figure 15. Ripple Rejection versus Frequency
3.0
2.0
1.0
0
1.5
C = 1.0 mF;
L
1.0
0.5
0
C = 1.0 mF;
L
C
= 10 mF
Adj
C
= 10 mF
Adj
-1.0
-2.0
-3.0
1.5
1.0
0.5
0
V
in
= 15 V
-0.5
-1.0
-1.5
1.0
0.5
0
V
out
= 10 V
V
= 10 V
C = 0;
Without C
out
L
I
= 50 mA
NL
I = 50 mA
L
Adj
T = 25C
C = 0;
Without C
J
L
T = 25C
J
Adj
I
L
V
in
0
10
20
t, TIME (ms)
30
40
0
10
20
t, TIME (ms)
30
40
Figure 17. Line Transient Response
Figure 18. Load Transient Response
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