Datasheet

7
6
5
4
3
2
1
0
1-
V ,V (V)
IN OUT
1ms/div
V
OUT
R =33W
LOAD
V =V
IN EN
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0.5-
V ,V (V)
EN OUT
1ms/div
EN
OUT
R =33W
LOAD
3.85
V , V (V)
IN OUT
50 s/divm
I (A)
OUT
3.8
3.75
3.7
3.35
3.25
3.3
3.2
3.15
3.15
2.5
1.5
2
1
0.5
0
V (for reference)
IN
V
OUT
I = 100mA 1A 100mA (1A/ s)
OUT
m® ®
1000
100
10
1
0.1
ENto90%V (ms)
OUT
1 10 100
C (nF)
NR
1000
R
LOAD
=1kW
7
6.5
6
5.5
5
4.5
4
3.5
3
V (V),0.5V/div
IN
50 s/divm
3.333
3.32475
3.3165
3.30825
3.3
3.29175
3.2835
3.27525
3.267
V (V),0.25%of3.3V/div
OUT
V
OUT
V =3.8V 4.8V 3.8V(1V/div)®
IN
®
I =500mA
OUT
TPS7A80xx
SBVS135H –JUNE 2010–REVISED JANUARY 2013 www.ti.com
TYPICAL CHARACTERISTICS: TPS7A8001 (continued)
At V
OUT(TYP)
= 3.3V, V
IN
= V
OUT(TYP)
+ 0.5V or 2.2V (whichever is greater), I
OUT
= 100mA, V
EN
= V
IN
, C
IN
= 1μF, C
OUT
= 4.7μF,
and C
NR
= 0.01μF, all temperature values refer to T
J
, unless otherwise noted.
STARTUP TIME
vs NOISE REDUCTION CAPACITANCE LINE TRANSIENT RESPONSE
Figure 26. Figure 27.
LOAD TRANSIENT RESPONSE ENABLE PULSE RESPONSE
Figure 28. Figure 29.
POWER-UP/POWER-DOWN RESPONSE
(1)
Figure 30.
(1) The internal reference requires approximately 2ms of rampup time (see Startup); therefore, V
OUT
fully reaches the
target output voltage of 3.3V in 2ms from starup.
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