Datasheet

100mV/div
100mV/div
1V/div
Time(50 s/div)m
C =2.2 F(Ceramic)
OUT
m
C =10 F(Ceramic)
OUT
m
5.0V
1V/ sm
3.3V
C =1nF
SS
100mV/div
1V/div
Time(50 s/div)m
C =10 F(Ceramic)
OUT
m
3.8V
1V/ sm
1.8V
C =1nF
SS
100mV/div
100mV/div
1A/div
100mV/div
Time(50 s/div)m
C =2.2 F(Ceramic)
OUT
m
C =10 F(Ceramic)
OUT
m
1A/ sm
50mA
C =470 F(OSCON)OUT m
C =1nF
SS
1.5A
0.5V/div V
OUT
V
EN
1V/div
Time(1ms/div)
C
SS
=2.2nF
C
SS
=1nF
C
SS
=0nF
1.2V
0V
1V/div
Time(20ms/div)
V (500mV/div)
PG
V
OUT
V =V =V
IN BIAS EN
TPS74801
SBVS074J –JANUARY 2007– REVISED JANUARY 2012 www.ti.com
TYPICAL CHARACTERISTICS
At T
J
= +25°C, V
IN
= V
OUT(TYP)
+ 0.3V, V
BIAS
= 5V, I
OUT
= 1A, V
EN
= V
IN
= 1.8V, V
OUT
= 1.5V, C
IN
= 1μF, C
BIAS
= 4.7μF, and
C
OUT
= 10μF, unless otherwise noted.
V
BIAS
LINE TRANSIENT V
IN
LINE TRANSIENT
Figure 20. Figure 21.
OUTPUT LOAD TRANSIENT RESPONSE TURN-ON RESPONSE
Figure 22. Figure 23.
POWER-UP/POWER-DOWN
Figure 24.
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