TPS732xx
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SBVS037I–AUGUST 2003–REVISED MAY 2006
TYPICAL CHARACTERISTICS (continued)
For all voltage versions at TJ = 25°C, VIN = VOUT(nom) + 0.5V, IOUT = 10mA, VEN = 1.7V, and COUT = 0.1µF, unless otherwise
noted.
PSRR (RIPPLE REJECTION) vs FREQUENCY
PSRR (RIPPLE REJECTION) vs VIN - VOUT
40
35
30
25
20
15
10
5
90
80
70
60
50
40
30
20
10
0
IOUT = 100mA
COUT = Any
IOUT = 1mA
µ
COUT = 1
F
IOUT = 1mA
COUT = 10 F
µ
IO = 100mA
µ
CO = 1 F
IOUT = 1mA
COUT = Any
IOUT = 100mA
COUT = 10
Frequency = 100kHz
µ
F
C
C
= 10µF
= 0.01µF
IOUT = Any
OUT
VIN = VOUT + 1V
µ
COUT = 0
F
NR
0
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
10
100
1k
10k
100k
1M
10M
−
VIN VOUT (V)
Frequency (Hz)
Figure 15.
Figure 16.
NOISE SPECTRAL DENSITY
CNR = 0µF
NOISE SPECTRAL DENSITY
CNR = 0.01µF
1
1
µ
COUT = 1
F
µ
COUT = 1
F
µ
COUT = 0
F
0.1
0.1
µ
COUT = 10 F
µ
COUT = 0
F
µ
COUT = 10
F
IOUT = 150mA
IOUT = 150mA
0.01
0.01
10
100
1k
10k
100k
10
100
1k
10k
100k
Frequency (Hz)
Frequency (Hz)
Figure 17.
Figure 18.
RMS NOISE VOLTAGE vs COUT
RMS NOISE VOLTAGE vs CNR
60
50
40
30
20
10
0
140
120
100
80
VOUT = 5.0V
VOUT = 5.0V
VOUT = 3.3V
VOUT = 1.5V
VOUT = 3.3V
VOUT = 1.5V
60
40
20
µ
CNR = 0.01
F
µ
COUT = 0
F
10Hz < Frequency < 100kHz
10Hz < Frequency < 100kHz
0
0.1
1
10
1p 10p 100p
1n
10n
µ
COUT ( F)
CNR (F)
Figure 19.
Figure 20.
8
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