LP2950 Datasheet, PDF (6/16 Pages) National Semiconductor (TI) – Series of Adjustable Micropower Voltage Regulators

Figure 5. Dropout Voltage versus
Output Current
400
350
TA = 25°C
300
250
200
150
100
50
0
0.1
1.0
10
IO, OUTPUT CURRENT (mA)
LP2950
Figure 6. Dropout Voltage versus Temperature
550
55
500
50
450
45
RL = 50
400
40
350
35
RL = 50 k
300
100
– 50
0
30
50
100
150
T, TEMPERATURE (°C)
Figure 7. Error Comparator Output
5.0
LP2951C
4.0
RL = 330 k
TA = 25°C
3.0
Vin Decreasing
2.0
Vin Increasing
1.0
0
4.70
4.74
4.78
4.82
4.86
Vin, INPUT VOLTAGE (V)
Figure 8. Line Transient Response
8.0
4.0
Vin
7.5
2.0
7.0
6.5
6.0
5.5
4.90
0
Vout
0
– 2.0
TA = 25°C
CL = 1.0 µF
– 4.0
IL = 1.0 mA
VO = 5.0 V
– 6.0
100 200 300 400 500 600 700 800
t, TIME (µs)
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
–1.0
–100
Figure 9. LP2951 Enable Transient
CL = 1.0 µF
CL = 10 µF
Shutdown Input
TA = 25°C
IL = 10 mA
Vin = 8.0 V
Vout = 5.0 V
Figure 10. Load Transient Response
200
CL = 1.0 µF
Vout = 5.0 V
150 TA = 25°C
Vout
100
50
ILoad
0
– 50
0
100
200
300
400
0
50 100 150 200 250 300 350
t, TIME (µs)
t, TIME (ms)
400
200
0
– 200
– 400
400
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