LP2950 LP2951
Figure 5. Dropout Voltage versus
Output Current
Figure 6. Dropout Voltage versus Temperature
400
350
550
500
55
50
T
= 25°C
A
300
250
200
150
100
450
400
350
300
45
40
35
30
R
= 50
L
R
= 50 k
50
0
L
0.1
1.0
10
100
– 50
0
50
T, TEMPERATURE (°C)
100
150
I
, OUTPUT CURRENT (mA)
O
Figure 7. Error Comparator Output
Figure 8. Line Transient Response
5.0
4.0
8.0
7.5
7.0
6.5
6.0
5.5
V
in
LP2951C
= 330 k
R
L
4.0
3.0
2.0
1.0
0
2.0
T
= 25°C
A
V
Decreasing
in
0
V
out
V
Increasing
in
– 2.0
– 4.0
– 6.0
T
= 25°C
= 1.0 µF
= 1.0 mA
= 5.0 V
A
C
L
I
L
V
O
4.70
4.74
4.78
4.82
4.86
4.90
0
100
200
300
400
500
600
700
800
V
, INPUT VOLTAGE (V)
t, TIME (µs)
in
Figure 9. LP2951 Enable Transient
Figure 10. Load Transient Response
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
200
150
100
50
C
= 1.0 µF
C
= 1.0 µF
= 5.0 V
L
L
400
200
0
V
out
= 25°C
T
A
V
out
C
= 10 µF
L
T
= 25°C
= 10 mA
= 8.0 V
A
I
V
V
L
in
– 200
– 400
I
Load
= 5.0 V
out
0
Shutdown Input
200
–1.0
– 50
–100
0
100
300
400
0
50
100
150
200
t, TIME (ms)
250
300
350
400
t, TIME (µs)
6
MOTOROLA ANALOG IC DEVICE DATA
MOTOROLA [ MOTOROLA ]
