LP38798_15 Datasheet, PDF (11/27 Pages) Texas Instruments – LP38798 High PSRR, Ultra-Low-Noise, 800-mA Linear Voltage Regulator for RF/Analog Circuits

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LP38798
SNOSCT6B – MARCH 2013 – REVISED DECEMBER 2014
Typical Characteristics (continued)
Unless otherwise specified: V_IN = 5.5 V, V_OUT = 5 V, I_OUT = 10 mA, C_OUT = 10 µF MLCC 16 V X7R, and T_J = 25°C.
2.0
0.05
1.8
0.04
ûV_IN = 5.5 V to 15 V
1.6
0.03
V_OUT = 5.0 V
I_OUT = 10 mA
1.4
0.02
1.2
0.01
1.0
0.00
0.8
-0.01
0.6
0.4
0.2
0.0
-50
V_IN = 5.5 V
V_OUT = 5.0 V
ûI_OUT = 10 mA to 800 mA
-25
0
25
50
75
TEMPERATURE, T_J (SC)
100
125
C036
-0.02
-0.03
-0.04
-0.05
-50 -25
0
25
50
75
TEMPERATURE, T_J (SC)
100
125
C037
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
-50
Figure 25. Load Regulation vs. T_J
-25
0
25
50
75 100 125
TEMPERATURE (SC)
C039
Figure 26. Line Regulation vs. T_J
V_IN
1V
/DIV
V_OUT = 5.0 V
C_OUT = 10 µF
I_OUT = 800 mA
V_IN = 7.0 V
ûV_OUT
V_IN = 6.0 V
ûV_OUT
20 mV
/DIV
TIME (500µs/DIV)
C022
Figure 27. Current Limit, I_SC vs. T_J
V_IN
1V
/DIV
ûV_OUT
20 mV
/DIV
V_IN = 7.0V
V_OUT = 5.0 V
C_OUT = 10 µF
I_OUT = 400 mA
ûV_OUT
V_IN = 6.0V
TIME (500µs/DIV)
C021
Figure 28. Line Transient
V_IN
1V
/DIV
ûV_OUT
20 mV
/DIV
V_IN = 7.0 V
V_OUT = 5.0 V
C_OUT = 10 µF
I_OUT = 10 mA
ûV_OUT
V_IN = 6.0 V
TIME (500µs/DIV)
C020
Figure 29. Line Transient
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Figure 30. Line Transient
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