Datasheet

1400
1300
1200
1100
1000
900
800
700
600
500
50
500 1000
DropoutVoltage(mV)
I (mA)
OUT
1500
+125 C°
+25 C°
- °40 C
90
80
70
60
50
40
30
20
10
0
Power-SupplyRejection(dB)
10 100
1k
10k 100k
1M
10M
Frequency(Hz)
I =1.5A
OUT
100
90
80
70
60
50
40
30
20
10
0
10
100 1k 10k 100k 1M
Power-SupplyRejectionRatio(dB)
Frequency(Hz)
10M
V =1.8,V =1.5V
IN OUT OUT
,I =1.5A
C =0 F
OUT
m
C =10 F
OUT
m
C =100 F
OUT
m
100
90
80
70
60
50
40
30
20
10
0
10
100 1k 10k 100k 1M
Power-SupplyRejectionRatio(dB)
Frequency(Hz)
10M
V =1.8,V =1.5V
IN OUT OUT
,I =100mA
C =10 F
OUT
m
C =100 F
OUT
m
C =0 F
OUT
m
90
80
70
60
50
40
30
20
10
0
0
0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25
Power-SupplyRejectionRatio(dB)
V V-
IN OUT
(V)
2.50
1kHz
100kHz
300kHz
700kHz
I =1.5A
OUT
1
0.1
0.01
100
1k 10k
OutputSpectralNoiseDensity(mV/Ö )
Hz
Frequency(Hz)
100k
I =1.5A
OUT
V =1.1V
OUT
TPS743xx
www.ti.com SBVS065K –DECEMBER 2005–REVISED AUGUST 2010
TYPICAL CHARACTERISTICS (continued)
At T
J
= +25°C, V
OUT
= 1.5V, V
IN
= V
OUT(TYP)
+ 0.3V, V
BIAS
= 3.3V, I
OUT
= 50mA, EN = V
IN
, C
IN
= 1mF, C
BIAS
= 4.7mF, and C
OUT
=
10mF, unless otherwise noted.
V
BIAS
DROPOUT VOLTAGE vs
I
OUT
AND TEMPERATURE V
BIAS
PSRR vs FREQUENCY
Figure 11. Figure 12.
V
IN
PSRR vs FREQUENCY V
IN
PSRR vs FREQUENCY
Figure 13. Figure 14.
V
IN
PSRR vs V
IN
– V
OUT
NOISE SPECTRAL DENSITY
Figure 15. Figure 16.
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