Datasheet

2200
2000
1800
1600
1400
1200
1000
800
600
0
200 400
V (V -
DO BIAS
V )(mV)
OUT
I (mA)
OUT
500
+125 C°
+25 C°
- °40 C
100 300
90
70
60
50
40
30
20
10
0
10
100 1k 10k 100k 1M
Power-SupplyRejectionRatio(dB)
Frequency(Hz)
10M
V =1.8V
IN
V =1.2V
OUT
V =5V
BIAS
C =1nF
SS
I =0.5A
OUT
I =0.1A
OUT
80
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 =1.8V
IN
V =1.2V
C =10 F
C =1nF
OUT
OUT
SS
m
I =100mA
OUT
I =500mA
OUT
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
Power-SupplyRejectionRatio(dB)
V V-
IN OUT
(V)
2.25
1kHz
10kHz
100kHz
500kHz
V
OUT
=1.2V
I
OUT
=500mA
C
SS
=1nF
1
0.1
0.01
100
1k 10k
OutputSpectralNoiseDensity(mV/Ö )
Hz
Frequency(Hz)
100k
C =1nF
SS
C =0nF
SS
C =10nF
SS
I =100mA
OUT
V =1.2V
OUT
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
100 200 300 400
I (mA)
BIAS
I (mA)
OUT
500
+125 C°
+25 C°
- °40 C
TPS74701
SBVS099F –NOVEMBER 2007–REVISED NOVEMBER 2010 www.ti.com
TYPICAL CHARACTERISTICS (continued)
At T
J
= +25°C, V
IN
= V
OUT(TYP)
+ 0.3V, V
BIAS
= 5V, I
OUT
= 50mA, V
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 (T
J
) V
BIAS
PSRR vs FREQUENCY
Figure 9. Figure 10.
V
IN
PSRR vs FREQUENCY V
IN
PSRR vs (V
IN
– V
OUT
)
Figure 11. Figure 12.
BIAS PIN CURRENT vs
NOISE SPECTRAL DENSITY I
OUT
AND TEMPERATURE (T
J
)
Figure 13. Figure 14.
8 Submit Documentation Feedback Copyright © 2007–2010, Texas Instruments Incorporated
Product Folder Link(s): TPS74701