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| LP2950ACDT-5RKG Datasheet, PDF (8/22 Pages) ON Semiconductor – 100 mA, Low Power Low Dropout Voltage Regulator | |||
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LP2950, LP2951, NCV2951
200
CL = 1.0 mF
150
Vout = 5.0 V
IL = 400 mA to 75 mA
TA = 25ï°C
Vout
100
50
ILoad
0
-â50
0
0.5 1 1.5 2 2.5 3 3.5
t, TIME (ms)
Figure 12. Load Transient Response
400
200
0
-â200
-â400
4
80
60
IL= 0.1 mA
40
20
TA = 25ï°C
CL = 1.0 mF
Vin = 6.0 V
Vout = 5.0 V
0
1.0
10
100
1.0 k
10 k
100 k
f, FREQUENCY (Hz)
Figure 13. Ripple Rejection
4.0
3.0
2.0
1.0
0
100
CL = 1.0 mF
IL= 100 mA
TA = 25ï°C
VO = 5.0 V
LP2951C
CL = 100 mF
1.0 k
10 k
100 k
f, FREQUENCY (Hz)
Figure 14. Output Noise
1.8
1.6
1.4
Output âOff"
1.2
Output âOn"
1.0
0.8
-â40 -â20 0
20 40 60 80 100 120 140 160
t, TEMPERATURE (ï°C)
Figure 15. Shutdown Threshold Voltage
versus Temperature
100
80
TA = 25ï°C
TA = 75ï°C
60
40
20
LP2951CN
0
0 5.0 10 15 20 25 30 35
Vin, INPUT VOLTAGE (V)
Figure 16. Maximum Rated
Output Current
4.0
2.0
0
-â2.0
-â4.0
-â6.0
40
10000
1000
100
10
Unstable Region
Stable Region
Vout = 5 V
100 mF
0.1 mF
1
Unstable Region for 0.1 mF capacitor only
0.1
Lower unstable region is for 0.1 mF only.
1 mF and 100 mF show no instability with low ESR values.
0.01
0 10 20 30 40 50 60 70 80 90 100
Output Current (mA)
Figure 17. Output Stability versus Output Capacitor
Change
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