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SBVS037I – AUGUST 2003 – REVISED MAY 2006
TYPICAL CHARACTERISTICS (continued)
For all voltage versions at T
J
= 25°C, V
IN
= V
OUT(nom)
+ 0.5V, I
OUT
= 10mA, V
EN
= 1.7V, and C
OUT
= 0.1µF, unless otherwise
noted.
PSRR (RIPPLE REJECTION) vs FREQUENCY
90
80
Ripple Rejection (dB)
70
60
50
40
30
20
10
0
V
IN
= V
OUT
+ 1V
10
100
1k
I
OUT
= Any
C
OUT
= 0µF
10k
100k
I
OUT
= 100mA
C
OUT
= 10µF
I
OUT
= 1mA
C
OUT
= Any
I
OUT
= 100mA
C
OUT
= Any
I
OUT
= 1mA
C
OUT
= 10µF
I
O
= 100mA
C
O
= 1µF
I
OUT
= 1mA
C
OUT
= 1
µ
F
40
35
30
PSRR (dB)
25
20
15
10
5
0
1M
10M
0
Frequency = 100kHz
C
OUT
= 10µF
C
NR
= 0.01µF
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
V
IN
−
V
OUT
(V)
PSRR (RIPPLE REJECTION) vs V
IN
- V
OUT
Frequency (Hz)
Figure 15.
NOISE SPECTRAL DENSITY
C
NR
= 0µF
1
C
OUT
= 1
µ
F
1
Figure 16.
NOISE SPECTRAL DENSITY
C
NR
= 0.01µF
e
N
(µV/√Hz)
e
N
(
µ
V/
√
Hz)
C
OUT
= 0µF
0.1
C
OUT
= 10µF
C
OUT
= 1µF
0.1
C
OUT
= 0µF
C
OUT
= 10µF
I
OUT
= 150mA
0.01
10
100
1k
Frequency (Hz)
10k
100k
0.01
10
100
1k
Frequency (Hz)
10k
100k
I
OUT
= 150mA
Figure 17.
RMS NOISE VOLTAGE vs C
OUT
60
50
40
V
N
(RMS)
V
N
(RMS)
30
20
V
OUT
= 1.5V
10
0
C
NR
= 0.01µF
10Hz < Frequency < 100kHz
0.1
1
C
OUT
(µF)
10
V
OUT
= 3.3V
140
V
OUT
= 5.0V
120
V
OUT
= 5.0V
100
80
60
40
20
0
V
OUT
= 1.5V
V
OUT
= 3.3V
Figure 18.
RMS NOISE VOLTAGE vs C
NR
C
OUT
= 0µF
10Hz < Frequency < 100kHz
1p
10p
100p
C
NR
(F)
1n
10n
Figure 19.
Figure 20.
8
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