Datasheet

100
10
1
0.1
0.01
Output Spectral Noise Density ( V/ )m ÖHz
10 100 1k 10k
Frequency (Hz)
100k
I = 10mA
OUT
I = 100mA
OUT
I = 750mA
OUT
RMS Noise (100Hz to 100kHz)
92.07 V (I = 10mA)
47.95 V (I = 100mA)
46.87 V (I = 750mA)
V = 0.5V
RMS OUT
RMS OUT
RMS OUT
DO
m
m
m
100
10
1
0.1
0.01
Output Spectral Noise Density ( V/ )m ÖHz
10 100 1k 10k
Frequency (Hz)
100k
C = 4.7 Fm
OUT
C = 22 Fm
OUT
C = 47 Fm
OUT
RMS Noise (100Hz to 100kHz)
47.95 V (C = 4.7 F)
47.33 V (C = 22 F)
47.42 V (C = 47 F)
V = 0.5V
I = 100mA
RMS OUT
RMS OUT
RMS OUT
DO
OUT
m
m
m
m
m
m
100
10
1
0.1
0.01
Output Spectral Noise Density ( V/ )m ÖHz
10 100 1k 10k
Frequency (Hz)
100k
C = 1nF
NR
C = 10nF
NR
C = 100nF
NR
RMS Noise (100Hz to 100kHz)
48.14 V (C = 1nF)
47.33 V (C = 10nF)
45.90 V (C = 100nF)
V = 0.5V
I = 100mA
RMS NR
RMS NR
RMS NR
DO
OUT
m
m
m
90
80
70
60
50
40
30
20
10
PSRR(dB)
0 0.5 1 1.5 2 2.5 3
V (V)
DO
3.5
f=1kHz
f=10kHz
f=100kHz
f=1MHz
I =100mA
OUT
NoC
IN
90
80
70
60
50
40
30
20
10
PSRR(dB)
0 0.5 1 1.5 2 2.5 3
V (V)
DO
3.5
f=1kHz
f=10kHz
f=100kHz
f=1MHz
I =750mA
OUT
IN
NoC
TPS7A80xx
www.ti.com SBVS135H –JUNE 2010–REVISED JANUARY 2013
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.
POWER-SUPPLY RIPPLE REJECTION POWER-SUPPLY RIPPLE REJECTION
vs DROPOUT VOLTAGE vs DROPOUT VOLTAGE
Figure 21. Figure 22.
OUTPUT SPECTRAL NOISE DENSITY OUTPUT SPECTRAL NOISE DENSITY
vs FREQUENCY vs FREQUENCY
Figure 23. Figure 24.
OUTPUT SPECTRAL NOISE DENSITY
vs FREQUENCY
Figure 25.
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