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| LP38798 Datasheet, PDF (11/23 Pages) Texas Instruments – LP38798-ADJ High PSRR, Ultra Low Noise, 800 mA Linear Voltage Regulator for RF/Analog Circuits | |||
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LP38798
www.ti.com
SNOSCT6A â MARCH 2013 â REVISED MAY 2013
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Unless otherwise specified: VIN = 5.5V, VOUT = 5.0 V, IOUT = 10 mA, COUT = 10 µF MLCC 16V X7R, TJ = 25°C.
VIN
1V
/DIV
VOUT = 1.2 V
COUT = 10 µF
IOUT = 800 mA
VIN = 4.3 V
VIN = 3.3 V
VIN
1V
/DIV
VOUT = 1.2 V
COUT = 10 µF
IOUT = 400 mA
VIN = 4.3 V
VIN = 3.3 V
ûVOUT
20 mV
/DIV
ûVOUT
ûVOUT
20 mV
/DIV
ûVOUT
TIME (500µs/DIV)
C019
Figure 32. Line Transient, VOUT = 1.2 V, IOUT = 800 mA
TIME (500µs/DIV)
C018
Figure 33. Line Transient, VOUT = 1.2 V, IOUT= 400 mA
VIN
1V
/DIV
VOUT = 1.2 V
COUT = 10 µF
IOUT = 10 mA
VIN = 4.3 V
VIN = 3.3 V
ûVOUT
20 mV
/DIV
ûVOUT
TIME (500µs/DIV)
C017
Figure 34. Line Transient, VOUT = 1.2 V, IOUT= 10 mA
IOUT
200 mA
/DIV
VIN = 5.5 V
VOUT = 5.0 V
COUT = 10 µF
IOUT = 800 mA
IOUT = 400 mA
ûVOUT
20 mV
/DIV
ûVOUT
TIME (500µs/DIV)
C016
Figure 35. Load Transien8t,0V0OmUAT = 5.0 V, IOUT = 400 mA to
IOUT
200 mA
/DIV
VIN = 5.5 V
VOUT = 5.0 V
COUT = 10 µF
IOUT = 800 mA
IOUT = 10 mA
ûVOUT
20 mV
/DIV
ûVOUT
TIME (500µs/DIV)
C015
Figure 36. Load Transient, VOUT = 5.0 V, IOUT = 10 mA to 800
mA
IOUT
200 mA
/DIV
VIN = 5.5 V
VOUT = 5.0 V
COUT = 10 µF
IOUT = 400 mA
IOUT = 10 mA
ûVOUT
20 mV
/DIV
ûVOUT
TIME (500µs/DIV)
C014
Figure 37. Load Transient, VOUT = 5.0 V, IOUT = 10 mA to 400
mA
Copyright © 2013, Texas Instruments Incorporated
11
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