Datasheet

10 100 1k 10k
Frequency(Hz)
100k
10
1
0.1
0.01
OutputSpectralNoiseDensity( V/ )Öm Hz
V = 1.2V
V = 3V
C =10nF
C =10 F
-
OUT
IN
NR/SS
OUT
-
m
RMSNOISE
10Hzto100kHz 100Hzto100kHz
I
OUT
1mA
200mA
15.13 14.73
17.13 16.71
I =200mA
OUT
I =1mA
OUT
10 100 1k 10k
Frequency(Hz)
100k
10
1
0.1
0.01
OutputSpectralNoiseDensity( V/ )m ÖHz
V = 1.2V
V = 3V
I =200mA
C =10 F
-
OUT
IN
OUT
OUT
-
m
RMSNOISE
10Hzto100kHz 100Hzto100kHz
C
NR/SS
0nF
10nF
80.00
79.83
17.29 16.81
C =0nF
NR/SS
C =10nF
NR/SS
10 100 1k 10k
Frequency(Hz)
100k
10
1
0.1
0.01
OutputSpectralNoiseDensity( V/ )Öm Hz
I =1mA
C =10 F
OUT
C =10nF
C =10nF
NR/SS
BYP
OUT
m
RMSNOISE
10Hzto100kHz 100Hzto100kHz
V
OUT(NOM)
-5V
-1.2V
17.50
15.04
15.13 14.73
V = 5V-
OUT(NOM)
V =
OUT(NOM)
-1.2V
TPS7A30xx
www.ti.com SBVS125A –AUGUST 2010– REVISED MARCH 2011
TYPICAL CHARACTERISTICS (continued)
At T
J
= –40°C to +125°C, |V
IN
| = |V
OUT(NOM)
| + 1.0V or |V
IN
| = 3.0V (whichever is greater), V
EN
= V
IN
, I
OUT
= 1mA, C
IN
= 2.2μF,
C
OUT
= 2.2μF, C
NR/SS
= 0nF, and the FB pin tied to OUT, unless otherwise noted.
OUTPUT SPECTRAL NOISE DENSITY vs OUTPUT CURRENT
Figure 19.
OUTPUT SPECTRAL NOISE DENSITY vs C
NR/SS
Figure 20.
OUTPUT SPECTRAL NOISE DENSITY vs V
OUT(NOM)
Figure 21.
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