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TPS731125DBVT Datasheet(PDF) 8 Page - Texas Instruments

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Part # TPS731125DBVT
Description  Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS731125DBVT Datasheet(HTML) 8 Page - Texas Instruments

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90
80
70
60
50
40
30
20
10
0
100
1k
10k
100k
1M
10M
10
Frequency(Hz)
V
=V
=1.25V
OUT
IN
I =1mA
C =Any
O
O
I =100mA
C =Any
O
O
I =1mA
C =
O
O
10 F
m
I =1mA
C =
O
O
1 F
m
I =Any
C =
O
O
0 F
m
I =100mA
C =
O
O
1 F
m
90
80
70
60
50
40
30
20
10
0
100
1k
10k
100k
1M
10M
10
Frequency(Hz)
V
=1.25V
OUT
I =100mA
C =10 FCeramic
R
=0.3
Nr
=0.01 F
O
O
SERIES
CAP
m
W
m
I =100mA
C =10 FCeramic
NoR
Nr
=0.01 F
O
O
SERIES
CAP
m
m
I =100mA
C =10 FTantalum
O
O
m
40
35
30
25
20
15
10
5
0
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
V
IN − VOUT (V)
Frequency = 100kHz
C
OUT = 10µF
V
OUT = 2.5V
1
0.1
0.01
10
100
1k
10k
100k
Frequency (Hz)
C
OUT = 1µF
C
OUT = 0µF
C
OUT = 10µF
I
OUT = 150mA
60
50
40
30
20
10
0
C
OUT (µF)
0.1
1
10
V
OUT = 5.0V
V
OUT = 3.3V
V
OUT = 1.5V
C
NR = 0.01µF
10Hz < Frequency < 100kHz
1
0.1
0.01
10
100
1k
10k
100k
Frequency (Hz)
I
OUT = 150mA
C
OUT = 1µF
C
OUT = 0µF
C
OUT = 10µF
TPS731xx
SBVS034H – SEPTEMBER 2003 – REVISED OCTOBER 2006
TYPICAL CHARACTERISTICS (continued)
For all voltage versions at T
J= 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 FREQUENCY
Figure 15.
Figure 16.
NOISE SPECTRAL DENSITY
PSRR (RIPPLE REJECTION) vs VIN - VOUT
CNR = 0µF
Figure 17.
Figure 18.
NOISE SPECTRAL DENSITY
CNR = 0.01µF
RMS NOISE VOLTAGE vs COUT
Figure 19.
Figure 20.
8
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