LP38842-ADJ_15 Datasheet, PDF (6/15 Pages) Texas Instruments – 1.5A Ultra Low Dropout Adjustable Linear Regulators Stable with Ceramic Output Capacitors

LP38842-ADJ
SNVS304A – FEBRUARY 2005 – REVISED APRIL 2013
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TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Unless otherwise specified: T_J = 25°C, C_IN = 10 µF CER, C_OUT = 22 µF CER, C_BIAS = 1 µF CER, S/D Pin is tied to V_BIAS, V_OUT
= 1.2V, I_L = 10mA, V_BIAS = 5V, V_IN = V_OUT + 1V.
V_IN PSRR
Output Noise Voltage
80
C_OUT = 4.7 PF Tantalum
70
C_BIAS = 1 PF Tantalum
60
I_L = 10 mA
1.8
V_OUT = 1.2V
1.6
I_L = 1A
1.4
C_OUT = 100 PF Tant.
1.2
50
1.0
40
0.8
30
0.6
20
0.4
10
0
1000
10000
100000
FREQUENCY (Hz)
Figure 7.
1000000
0.2
0
1
100
10k
1M
FREQUENCY (MHz)
Figure 8.
V_ADJ / I_ADJ
vs
Temperature
500
450
400
565
350
300
V_ADJ
250
560
200
150
I_ADJ
100
555
50
0
-40 -20
0 20 40 60 80 100 120 140
TEMPERATURE (^oC)
Figure 9.
6
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