Datasheet
Table Of Contents
2.795
2.796
2.797
2.798
2.799
2.800
2.801
2.802
2.803
2.804
2.805
0 50 100 150 200
I
OUT
(mA)
V
IN
= 3.8 V
C
OUT
= 10 µF
T
J
= 25°C
V
OUT
(V)
0
50
100
150
200
250
−40 −25−10 5 20 35 50 65 80 95 110 125
T
J
(°C)
I
OUT
= 1 mA
V
IN
= 3.8 V
C
OUT
= 10 µF
I
OUT
= 200 mA
I
GND
(µA)
2.775
2.780
2.785
2.790
2.795
2.800
2.805
−40 −25 −10 5 20 35 50 65 80 95 110 125
T
J
(°C)
I
OUT
= 200 mA
I
OUT
= 1 mA
V
IN
= 3.8 V
C
OUT
= 10 µF
V
OUT
(V)
60
50
40
30
20
10
0
RMS Output Noise ( V )m
RMS
0.001 0.01 0.1
C ( F)m
NR
BW = 100 Hz to 100 kHz
V = 2.8 V
I = 200 mA
C = 10 F
OUT
OUT
OUT
m
0
20
40
60
80
100
120
140
160
180
−40 −25−10 5 20 35 50 65 80 95 110 125
I
OUT
= 200 mA
I
OUT
= 10 mA
V
IN
= 2.7 V
C
OUT
= 10 µF
T
J
(°C)
V
DO
(mV)
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
100 1 k 10 k 100 k
Frequency (Hz)
V
IN
= 3.8 V
I
OUT
= 200 mA
C
OUT
= 10 µF
C
NR
= 0.1 µF
C
NR
= 0.001 µF
C
NR
= 0.0047 µF
C
NR
= 0.01 µF
Output Spectral Noise Density (µV/√Hz)
3
Time (µs)
0 604020 80 100 140120 160 180 200
V
IN
= 3.8 V
V
OUT
= 2.8 V
I
OUT
= 200 mA
C
OUT
= 2.2 µF
T
J
= 25°C
1
2
0
0
2
C
NR
= 0.0047 µF
C
NR
= 0.01 µF
4
C
NR
= 0.001 µF
V
EN
(V)V
OUT
(V)
Time (µs)
0 302010 40 50 7060 80 90 100
I
OUT
= 200 mA
C
OUT
= 2.2 µF
C
NR
= 0.01 µF
0
-20
3.8
dv
dt
+
0.4 V
µs
20
4.8
V
IN
(mV) V
OUT
(mV)
10 100 1 k 10 k
10
40
80
100 k 1 M 10 M
Ripple Rejection (dB)
Frequency (Hz)
I
OUT
= 10 mA
50
0
V
IN
= 3.8 V
C
OUT
= 10 µF
C
NR
= 0.01 µF
I
OUT
= 200 mA
20
30
60
70
90
100
TPS730xx
www.ti.com
SBVS054I – NOVEMBER 2004– REVISED FEBRUARY 2011
TYPICAL CHARACTERISTICS (SOT23 PACKAGE)
TPS73028 TPS73028 TPS73028
OUTPUT VOLTAGE OUTPUT VOLTAGE GROUND CURRENT
vs vs vs
OUTPUT CURRENT JUNCTION TEMPERATURE JUNCTION TEMPERATURE
Figure 2. Figure 3. Figure 4.
TPS73028 OUTPUT SPECTRAL TPS73028
ROOT MEAN SQUARE OUTPUT
NOISE DENSITY NOISE DROPOUT VOLTAGE
vs vs vs
FREQUENCY C
NR
JUNCTION TEMPERATURE
Figure 5. Figure 6. Figure 7.
TPS73028 TPS73028 OUTPUT VOLTAGE,
RIPPLE REJECTION ENABLE VOLTAGE
vs vs TPS73028
FREQUENCY TIME (START-UP) LINE TRANSIENT RESPONSE
Figure 8. Figure 9. Figure 10.
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