LP2951-33-Q1 Datasheet, PDF (10/30 Pages) Texas Instruments – Adjustable Micropower Voltage Regulators With Shutdown

LP2951-33-Q1, LP2951-50-Q1
SLVSAW6E – JUNE 2011 – REVISED NOVEMBER 2014
Typical Characteristics (continued)
100
VIN = 6 V
90
CL = 1 µF
80
70
60
50
IL = 1 mA
40
30
20
10
1.E10+01
IL = 10 mA
1.1E0+002
1.E1+k03 1.1E0+k04
f – Frequency – Hz
11.E0+00k5
1.E1+M06
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100
90
80 I_L = 50 mA
70
V_IN = 6 V
C_L = 1 µF
60
50
40
I_L = 100 mA
30
20
10
11.E0+01
11.E00+02 1.1Ek+03 1.1E0+k04 1.1E0+00k5
f – Frequency – Hz
1.E1+M06
Figure 25. Ripple Rejection vs Frequency
6
5
4
C_L = 200 µF
3
2
C_L = 1 µF
1
C_L = 3.3 µF
0
1.E10+01
11.E0+002
1.1Ek+03
1.1E0+k04
f – Frequency – Hz
11.0E0+k05
Figure 26. Ripple Rejection vs Frequency
400
350
300
250
200
150
100
50
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
T_A – Temperature – °C
Figure 27. Output Noise vs Frequency
1.7
1.6
V
N)– ^1.5
O
to
FF
1.4
(O
oltage
1.3
1.2
V
InputLogic
1.1
1
0.9
0.8
-40 -25 -10
5 20 35 50 65 80
T_A – Temperature – °CC
95 110 125
Figure 29. Shutdown Threshold Voltage (OFF to ON) vs
Temperature
Figure 28. Divider Resistance vs Temperature
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1
0.9
0.8
-40 -25 -10 5 20 35 50 65 80 95 110 125
TA – Temperature – °C
Figure 30. Shutdown Threshold Voltage (ON to OFF) vs
Temperature
10
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