Datasheet

-40 -25 -10 1251109580655035205
Temperature( C)°
%V (V)
O
UT
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-40 -25 -10 1251109580655035205
Temperature( C)°
%
DV
OUT
(V)
1
0
-1
-2
150mA
0.1mA
5mA
-40 -25 -10 1251109580655035205
Temperature( C)°
%
V
(V)
D
OUT
3
2
1
0
-1
-2
-3
150mA
0.1mA
5mA
10 100 1k 10k 100k
Frequency(Hz)
OutputSpectralNoiseDensity( V/ )m
ÖHz
100
10
1
0.1
0.01
0.001
150mA
109 Vm
RMS
50mA
109 Vm
RMS
1mA
108 Vm
RMS
V
oltage(1V/div)
Time(20ms/div)
LoadCurrent
Enable
V
OUT
V
IN
V =0.0Vto
IN
5.0V
V =3.3V
OUT
I =150mA
OUT
C =10 Fm
OUT
0V
Current(50mA/div)
10 10M100 1k 10k 100k 1M
Frequency(Hz)
PSRR(dB)
80
70
60
50
40
30
20
10
0
150mA
50mA
1mA
TPS781 Series
SBVS102B – MARCH 2008 – REVISED MAY 2008 ........................................................................................................................................................... www.ti.com
TYPICAL CHARACTERISTICS (continued)
Over the operating temperature range of T
J
= – 40 ° C to +125 ° C, V
IN
= V
OUT(TYP)
+ 0.5V or 2.2V, whichever is greater;
I
OUT
= 100 µ A, V
EN
= V
VSET
= V
IN
, C
OUT
= 1 µ F, and C
IN
= 1 µ F, unless otherwise noted.
% Δ V
OUT
vs TEMPERATURE % Δ V
OUT
vs TEMPERATURE
I
OUT
= 1mA, V
IN
= 3.8V, V
OUT
= 3.3V V
VSET
= 1.2V, V
IN
= 2.7V, V
OUT
= 2.2V (typ)
TPS78101 TPS781330220
Figure 31. Figure 32.
% Δ V
OUT
vs TEMPERATURE OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY
V
VSET
= 0.4V, V
IN
= 3.8V, V
OUT
= 3.3V (typ) C
IN
= 1 µ F, C
OUT
= 2.2 µ F, V
VSET
= 1.2V, V
IN
= 2.7V
TPS781330220 TPS781330220
Figure 33. Figure 34.
RIPPLE REJECTION vs FREQUENCY
V
IN
= 2.7V, V
OUT
= 1.2V, C
OUT
= 2.2 µ F INPUT VOLTAGE RAMP vs OUTPUT VOLTAGE
TPS78101 TPS781330220
Figure 35. Figure 36.
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