Datasheet

 
 
SLVS325C − MARCH 2001 − REVISED MAY 2002
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6
TYPICAL CHARACTERISTICS
Figure 1
1.797
1.798
1.799
1.8
1.801
1.802
1.803
0 20 40 60 80 100
I
O
− Output Current − mA
− Output Voltage − V
V
O
TPS79118
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
V
I
= 2.8 V
C
o
= 10 µF
T
J
= 25° C
Figure 2
3.297
3.298
3.299
3.3
3.301
3.302
3.303
0 20 40 60 80 100
I
O
− Output Current − mA
TPS79133
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
V
I
= 4.3 V
C
o
= 10 µF
T
J
= 25° C
− Output Voltage − V
V
O
Figure 3
1.78
1.785
1.79
1.795
1.8
1.805
1.81
1.815
1.82
−40 −25 −10 5 20 35 50 65 80 95 110 125
T
J
− Junction Temperature − °C
TPS79118
OUTPUT VOLTAGE
vs
JUNCTION TEMPERATURE
− Output Voltage − V
V
O
I
O
= 1 mA
V
I
= 2.8 V
C
o
= 10 µF
I
O
= 100 mA
Figure 4
3.27
3.28
3.29
3.3
3.31
3.32
−40 −25 −10 5 20 35 50 65 80 95 110 125
T
J
− Junction Temperature − °C
TPS79133
OUTPUT VOLTAGE
vs
JUNCTION TEMPERATURE
− Output Voltage − V
V
O
I
O
= 100 mA
I
O
= 1 mA
V
I
= 4.3 V
C
o
= 10 µF
Figure 5
100
120
140
160
180
200
220
240
260
−40 −25−10 5 20 35 50 65 80 95 110 125
T
J
− Junction Temperature − °C
TPS79133
GROUND CURRENT
vs
JUNCTION TEMPERATURE
Ground Current − Aµ
V
I
= 4.3 V
C
o
= 10 µF
I
O
= 1 mA
I
O
= 100 mA
Figure 6
100 1 k 10 k 100
k
I
O
= 1 mA
V
I
= 2.8 V
C
o
= 1 µF
C
(byp)
= 0.1 µF
I
O
= 100 mA
f − Frequency − Hz
Output Spectral Noise Density −
TPS79118
OUTPUT SPECTRAL NOISE DENSIT
Y
vs
FREQUENCY
V/ Hzµ
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
0.18
0.2
Figure 7
100 1 k 10 k 100 k
I
O
= 1 mA
V
I
= 2.8 V
C
o
= 10 µF
C
(byp)
= 0.1 µF
I
O
= 100 mA
f − Frequency − Hz
Output Spectral Noise Density −
TPS79118
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
V/ Hzµ
0
0.05
0.1
0.15
0.2
0.25
Figure 8
100 1 k 10 k 100 k
I
O
= 0.1 µF
V
I
= 2.8 V
I
O
= 100 mA
C
o
= 10 µF
I
O
= 0.01 µF
f − Frequency − Hz
TPS79118
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
I
O
= 0.001 µF
0
0.2
0.4
0.6
0.8
1
1.2
I
O
= 0.0047 µF
Output Spectral Noise Density −
V/ Hzµ
Figure 9
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
100 1 k 10 k 100
k
I
O
= 1 mA
V
I
= 4.3 V
C
o
= 1 µF
C
(byp)
= 0.1 µF
I
O
= 100 mA
f − Frequency − Hz
Output Spectral Noise Density −
TPS79133
OUTPUT SPECTRAL NOISE DENSIT
Y
vs
FREQUENCY
V/ Hzµ