Datasheet

0
10
20
30
40
50
60
70
80
90
100
10 100 1k 10k 100k 1M 10M
Frequency (Hz)
PSRR (dB)
V
IN
=3.6V, I
OUT
=0.1A
V
IN
=3.6V, I
OUT
=2A
V
IN
=3.8V, I
OUT
=0.1A
V
IN
=3.8V, I
OUT
=2A
V
OUT(TARGET)
= 3.3 V
400mV, 800mV, 1.6V pins to GND
50mV, 100mV, 200mV pins open
G071
0.01
0.1
1
10
10 100 1k 10k 100k
Frequency (Hz)
Output Spectral Noise Density (µV/ Hz)
V
OUT(TARGET)
= 0.9 V
V
OUT(TARGET)
= 1.2 V
V
OUT(TARGET)
= 3.3 V
V
IN
= V
OUT(TARGET)
+ 0.3 V
I
OUT
= 2 A
100 Hz to 100 kHz RMS Noise
0.9 V: 37.43 µV
RMS
1.2 V: 40.65 µV
RMS
3.3 V: 82.59 µV
RMS
G061
0.01
0.1
1
10
10 100 1k 10k 100k
Frequency (Hz)
Output Spectral Noise Density (µV/ Hz)
C
SS
= 100nF, C
OUT
= 100µF
C
SS
= 100nF, C
OUT
= 10µF
C
SS
= 10nF, C
OUT
= 100µF
C
SS
= 10nF, C
OUT
= 10µF
C
SS
= 1nF, C
OUT
= 100µF
C
SS
= 1nF, C
OUT
= 10µF
V
IN
= 1.8 V, I
OUT
= 1 A
V
OUT(TARGET)
= 1.5 V
200mV, 800mV pins to GND
50mV, 100mV, 400mV, 1.6V pins open
G063
TPS7A7200
SBVS136E –MARCH 2012–REVISED SEPTEMBER 2013 www.ti.com
TYPICAL CHARACTERISTICS (continued)
At T
J
= +25°C, V
IN
= V
OUT(TARGET)
+ 0.3 V, I
OUT
= 25 mA, V
(EN)
= V
IN
, C
IN
= 10 μF, C
OUT
= 10 μF, C
(SS)
= 10 nF, and the PG pin
pulled up to V
IN
with 100-kΩ pull-up resistor, unless otherwise noted.
NOISE SPECTRAL DENSITY BY OUTPUT VOLTAGE NOISE SPECTRAL DENSITY BY EXTERNAL CAPACITORS
Figure 20. Figure 21.
POWER-SUPPLY RIPPLE REJECTION
vs FREQUENCY
Figure 22.
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