TPS79301, TPS79318
TPS79325, TPS79328, TPS793285
TPS79330, TPS79333, TPS793475
www.ti.com
SLVS348H–JULY 2001–REVISED OCTOBER 2004
TYPICAL CHARACTERISTICS (SOT23 PACKAGE)
TPS79328
OUTPUT VOLTAGE
vs
TPS79328
OUTPUT VOLTAGE
vs
TPS79328
GROUND CURRENT
vs
OUTPUT CURRENT
JUNCTION TEMPERATURE
JUNCTION TEMPERATURE
2.805
2.804
2.803
2.802
2.801
2.800
2.799
250
200
2.805
2.800
2.795
2.790
2.785
V
= 3.8 V
= 10 µF
OUT
= 25°C
IN
V
C
= 3.8 V
IN
C
T
= 10 µF
I
= 1 mA
OUT
OUT
J
I
= 1 mA
OUT
I
= 200 mA
OUT
150
100
50
0
I
= 200 mA
OUT
2.798
2.797
2.780
2.775
V
C
= 3.8 V
= 10 µF
IN
2.796
2.795
OUT
−40 −25 −10 5 20 35 50 65 80 95 110 125
(°C)
0
50
100
(mA)
150
200
−40 −25−10 5 20 35 50 65 80 95 110 125
I
T
J
(°C)
T
J
OUT
Figure 2.
Figure 3.
Figure 4.
TPS79328 OUTPUT SPECTRAL
TPS79328 OUTPUT SPECTRAL
TPS79328 OUTPUT SPECTRAL
NOISE DENSITY
vs
NOISE DENSITY
vs
NOISE DENSITY
vs
FREQUENCY
FREQUENCY
FREQUENCY
0.30
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0.30
V
= 3.8 V
IN
V
C
C
= 3.8 V
V
C
C
= 3.8 V
IN
= 10 µF
OUT
= 0.1 µF
NR
IN
I
= 200 mA
OUT
= 2.2 µF
OUT
= 0.1 µF
0.25
0.20
0.25
0.20
0.15
0.10
0.05
0
C
= 10 µF
OUT
= 0.001 µF
NR
C
NR
C
= 0.0047 µF
NR
C
I
= 1 mA
OUT
= 0.01 µF
NR
0.15
I
= 1 mA
OUT
C
NR
= 0.1 µF
0.10
0.05
I
= 200 mA
OUT
I
= 200 mA
OUT
0
100
1 k
10 k
100 k
100
1 k
10 k
100 k
100
1 k
10 k
100 k
Frequency (Hz)
Frequency (Hz)
Frequency (Hz)
Figure 5.
Figure 6.
Figure 7.
ROOT MEAN SQUARE OUTPUT
TPS79328
DROPOUT VOLTAGE
vs
NOISE
vs
OUTPUT IMPEDANCE
vs
CNR
FREQUENCY
JUNCTION TEMPERATURE
2.5
180
160
140
120
100
80
60
50
40
30
20
10
V
= 3.8 V
= 10 µF
OUT
= 25° C
IN
V
= 2.7 V
IN
V
= 2.8 V
= 200 mA
= 10 µF
OUT
C
T
C
OUT
= 10 µF
I
OUT
J
C
OUT
2.0
1.5
I
= 200 mA
OUT
I
= 1 mA
OUT
1.0
0.5
I
= 100 mA
OUT
60
40
I
= 10 mA
OUT
20
BW = 100 Hz to 100 kHz
0.01
0
0
10
0
−40 −25−10 5 20 35 50 65 80 95 110 125
100
1 k
10 k 100 k 1 M
10 M
0.001
0.1
Frequency (Hz)
T
J
(°C)
C
NR
(µF)
Figure 8.
Figure 9.
Figure 10.
6
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