LM2931 Series
Figure 8. Bias Current versus Output Current
Figure 7. Bias Current versus Input Voltage
12
10
8.0
V
= 5.0 V
out
= 25°C
V
= 14 V
= 5.0 V
T
in
J
6.0
4.0
2.0
0
V
out
= 25°C
8.0
6.0
4.0
2.0
0
T
J
R
= 50 Ω
L
R
= 100
= 500
Ω
L
R
Ω
L
0
20
40
60
80
100
–20
–10
0
10
20
30
40
50
60
I
, OUTPUT CURRENT (mA)
V
, INPUT VOLTAGE (V)
O
in
Figure 9. Bias Current versus Junction Temperature
Figure 10. Output Impedance versus Frequency
2.0
1.6
1.2
0.8
0.4
8.0
V
V
= 14 V
= 5.0 V
= 10 mA
V
= 14 V
= 5.0 V
in
out
in
V
out
I
O
I
= 100 mA
O
6.0
4.0
DI = 1.0 mA
O
C
= 100 µF
O
T
= 25°C
J
C
= 0.15 Ω
Tantulum
O(ESR)
I
= 50 mA
O
C
= 0.3 Ω
O(ESR)
Electrolytic
2.0
0
I
= 0 mA
0
O
0
10
100
1.0 k
10 k
100 k
1.0 M
10 M
–55
–25
25
50
75
100
125
T , JUNCTION TEMPERATURE (°C)
f, FREQUENCY (Hz)
J
Figure 11. Ripple Rejection versus Frequency
Figure 12. Ripple Rejection versus Output Current
95
95
85
75
85
75
65
C
= 0.15 Ω
O(ESR)
Tantulum
V
= 14 V
= 5.0 V
in
V
out
V
V
= 14 V
= 5.0 V
in
DV = 100 mV
in
out
f = 120 Hz
= 25
R
C
= 500
= 100
Ω
µ
L
O
F
65
55
T
°C
J
T
= 25°C
J
C
= 0.3 Ω
O(ESR)
Electrolytic
10
100
1.0 k
10 k
100 k
1.0 M
10 M
0
20
40
60
80
100
I
, OUTPUT CURRENT (mA)
f, FREQUENCY (Hz)
O
6
MOTOROLA ANALOG IC DEVICE DATA