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TPS72301DBVR Datasheet(PDF) 7 Page - Texas Instruments

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Part # TPS72301DBVR
Description  200 mA LOW NOISE HIGH PSRR NEGATIVE OUTPUT LOW DROPOUT LINEAR REGULATORS
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS72301DBVR Datasheet(HTML) 7 Page - Texas Instruments

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TPS72301
TPS72325
SLVS346−SEPTEMBER2003
www.ti.com
7
Figure 19
TPS72325
START-UP RESPONSE
CIN= 2.2 µF,
COUT = 2.2 µF,
IOUT = 50 mA,
Cbyp = 0 µF
t − Time − ms
0
0.3
0.
2
0.1
0.4 0.5
0.7
0.6
0.8 0.9 1
Figure 20
0
1
3
2
1
TPS72325
START-UP RESPONSE
0
2
t − Time − ms
0
0.3
0.2
0.1
0.4 0.5
0.7
0.6
0.8 0.9
1
CIN = 2.2 µF,
COUT = 2.2 µF,
IOUT = 50 mA,
Cbyp = 0.01 µF
Figure 21
TPS72325
POWERUP-POWERDOWN
CIN = 2.2 µF,
COUT = 2.2 µF,
IOUT = 50 mA,
Cbyp = 0 µF
0 V
−3.5 V
2
1
03
4
6
57
8
9
10
t − Time − ms
Figure 22
0
50
100
150
200
250
1
10
100
1 k
10 k
100 k
C(NR) − pF
TPS72325
TOTAL NOISE
vs
C(NR) (10 Hz − 100 kHz)
COUT = 2.2 µF,
IOUT = 100 mA
CIN −2.2 µF
COUT = 10 µF,
IOUT = 100 mA
COUT = 2.2 µF,
IOUT = 25 µA
COUT = 10 µF,
IOUT = 25 µA
Figure 23
t − Time −1 ms / div
TPS72325
OUTPUT NOISE
vs
TIME
CIN −2.2 µF, COUT = 2.2 µF,
Cbyp = 0.01 µF, IOUT = 100 mA
Figure 24
f − Frequency − Hz
100 n
100
1 k
10 k
TPS72325
NOISE SPECTRAL DENSITY
vs
FREQUENCY
10
100 k
10 n
IOUT = 25 µA
CIN = 0.01 µF ,
COUT = 2.2 µF,
Cbyp = 0.01 µF,
IOUT = 100 mA
µ
1
µ
Figure 25
f − Frequency − Hz
100
1 k
10 k
TPS72325
NOISE SPECTRAL DENSITY
vs
FREQUENCY
100 k
100 n
10 n
IOUT = 25 µA
IOUT = 100 mA
CIN = 0 µF,
COUT = 2.2 µF,
Cbyp = 0.01 µF,
10
µ
1
µ
Figure 26
40
30
0
10
100
1 k
10 k
50
60
90
100 k
1 M
70
10
−10
POWER SUPPLY REJECTION RATIO
vs
FREQUENCY
f − Frequency − Hz
20
80
IOUT = 1 mA
IOUT = 100 mA
IOUT = 200 mA
VIN = −5 V,
CIN = 10 µF,
COUT = 10 µF,
Cbyp = 0
Figure 27
40
30
0
10
100
1 k
10 k
50
60
90
100 k
1 M
70
10
−10
POWER SUPPLY REJECTION RATIO
vs
FREQUENCY
f − Frequency − Hz
20
80
IOUT = 100 mA
IOUT = 200 mA
VIN = −5 V,
CIN = 10 µF,
COUT = 10 µF,
Cbyp = 0.01
IOUT = 1 mA


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