Data Sheet

60
50
40
30
20
10
0
V
N
(RMS)
C
OUT
(
m
F)
0.1 1 10
V
OUT
= 5.0 V
V
OUT
= 3.3 V
V
OUT
= 1.5 V
C
NR
= 0.01
m
F
10 Hz < Frequency < 100 kHz
140
120
100
80
60
40
20
0
V
N
(RMS)
C
NR
(F)
1p 10p 100p 1n 10n
V
OUT
= 5.0 V
V
OUT
= 3.3 V
V
OUT
= 1.5 V
C
OUT
= 0
m
F
10 Hz < Frequency < 100 kHz
1
0.1
0.01
e
N
(
m
V/
√
Hz)
10 100 1k 10k 100k
Frequency (Hz)
C
OUT
= 1
m
F
C
OUT
= 0
m
F
C
OUT
= 10
m
F
I
OUT
= 150 mA
1
0.1
0.01
e
N
(
m
V/
√
Hz)
10 100 1k 10k 100k
Frequency (Hz)
I
OUT
= 150 mA
C
OUT
= 1
m
F
C
OUT
= 0
m
F
C
OUT
= 10
m
F
10k10
90
80
70
60
50
40
30
20
10
0
RippleRejection(dB)
100 1k 100k 1M 10M
Frequency(Hz)
I =1mA
OUT
C =1 Fm
OUT
I =Any
OUT
C =0 Fm
OUT
V =V +1V
IN OUT
I =1mA
OUT
C =Any
OUT
I =1mA
OUT
C =10 Fm
OUT
I =100mA
OUT
C =Any
OUT
I =100mA
OUT
C =10 Fm
OUT
I =100mA
O
C =1 Fm
O
40
35
30
25
20
15
10
5
0
PSRR(dB)
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
V V- (V)
IN OUT
Frequency=10kHz
C =10 F
V =2.5V
I =100mA
m
OUT
OUT
OUT
TPS731
SBVS034N –SEPTEMBER 2003–REVISED DECEMBER 2015 www.ti.com
Typical Characteristics (continued)
For all voltage versions at T
J
= 25°C, V
IN
= V
OUT(nom)
+ 0.5 V, I
OUT
= 10 mA, V
EN
= 1.7 V, and C
OUT
= 0.1 μF, unless otherwise
noted.
Figure 14. PSRR (Ripple Rejection) vs V
IN
– V
OUT
Figure 13. PSRR (Ripple Rejection) vs Frequency
Figure 15. Noise Spectral Density C
NR
= 0 μF Figure 16. Noise Spectral Density C
NR
= 0.01 μF
Figure 17. RMS Noise Voltage vs C
OUT
Figure 18. RMS Noise Voltage vs C
NR
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