LM2931, NCV2931 Series
12
10
8.0
6.0
4.0
2.0
0
−20
R
L
= 100
W
R
L
= 500
W
0
−10
0
10
20
30
V
in
, INPUT VOLTAGE (V)
40
50
60
0
20
40
60
80
100
R
L
= 50
W
V
out
= 5.0 V
T
J
= 25°C
8.0
IB, BIAS CURRENT (mA)
IB, BIAS CURRENT (mA)
6.0
V
in
= 14 V
V
out
= 5.0 V
T
J
= 25°C
4.0
2.0
I
O
, OUTPUT CURRENT (mA)
Figure 7. Bias Current versus Input Voltage
Figure 8. Bias Current versus Output Current
8.0
IO , OUTPUT IMPEDANCE (
Ω
)
V
in
= 14 V
V
out
= 5.0 V
IB, BIAS CURRENT (mA)
6.0
I
O
= 100 mA
2.0
1.6
1.2
0.8
0.4
0
−25
0
25
50
75
T
J
, JUNCTION TEMPERATURE (°C)
100
125
10
100
1.0 k
10 k
100 k
f, FREQUENCY (Hz)
1.0 M
10 M
C
O(ESR)
= 0.3
W
Electrolytic
V
in
= 14 V
V
out
= 5.0 V
I
O
= 10 mA
DI
O
= 1.0 mA
C
O
= 100
mF
T
J
= 25°C
4.0
I
O
= 50 mA
2.0
I
O
= 0 mA
0
−55
C
O(ESR)
= 0.15
W
Tantulum
Figure 9. Bias Current versus Junction Temperature
Figure 10. Output Impedance versus Frequency
95
RR, RIPPLE REJECTION RATIO (dB)
RR, RIPPLE REJECTION RATIO (dB)
95
85
V
in
= 14 V
V
out
= 5.0 V
DV
in
= 100 mV
R
L
= 500
W
C
O
= 100
mF
T
J
= 25°C
C
O(ESR)
= 0.15
W
Tantulum
85
75
75
65
C
O(ESR)
= 0.3
W
Electrolytic
1.0 k
10 k
100 k
1.0 M
10 M
V
in
= 14 V
V
out
= 5.0 V
f = 120 Hz
T
J
= 25°C
55
10
100
f, FREQUENCY (Hz)
65
0
20
40
60
I
O
, OUTPUT CURRENT (mA)
80
100
Figure 11. Ripple Rejection versus Frequency
Figure 12. Ripple Rejection versus Output Current
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