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SLVS351I – SEPTEMBER 2002 – REVISED MAY 2006
TYPICAL CHARACTERISTICS
TPS79630
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
3.05
3.04
3.03
3.02
I
GND
(µA)
3.01
V
OUT
(V)
V
OUT
(V)
3.00
2.99
2.98
2.97
2.96
2.95
0.0
0.2
0.4
0.6
0.8
1.0
I
OUT
(A)
0
2.775
−40 −25 −10 5
20 35 50 65 80 95 110 125
T
J
(°C)
290
−40 −25 −10 5
20 35 50 65 80 95 110 125
T
J
(°C)
2
2.785
I
OUT
= 1 A
V
IN
= 4 V
C
OUT
= 10
µF
T
J
= 25°C
2.795
4
V
IN
= 3.8 V
C
OUT
= 10
µF
3
2.790
I
OUT
= 1 mA
330
320
I
OUT
= 1 A
310
1
2.780
300
I
OUT
= 1 mA
TPS79628
OUTPUT VOLTAGE
vs
JUNCTION TEMPERATURE
350
340
TPS79628
GROUND CURRENT
vs
JUNCTION TEMPERATURE
V
IN
= 3.8 V
C
OUT
= 10
µF
Figure 1.
TPS79630
OUTPUT SPECTRAL NOISE
DENSITY
vs
FREQUENCY
0.7
Output Spectral Noise Density − µV//Hz
Output Spectral Noise Density −
µV//Hz
0.6
0.5
0.4
0.3
I
OUT
= 1 mA
0.2
0.1
I
OUT
= 1.5 A
0.0
100
1k
10k
100k
V
IN
= 5.5 V
C
OUT
= 2.2
µF
C
NR
= 0.1
µF
0.6
Figure 2.
TPS79630
OUTPUT SPECTRAL NOISE
DENSITY
vs
FREQUENCY
2.5
Output Spectral Noise Density −
µV//Hz
V
IN
= 5.5 V
C
OUT
= 10
µF
C
NR
= 0.1
µF
Figure 3.
TPS79630
OUTPUT SPECTRAL NOISE
DENSITY
vs
FREQUENCY
V
IN
= 5.5 V
C
OUT
= 10
µF
I
OUT
= 1 A
0.5
0.4
0.3
0.2
0.1
0.0
100
I
OUT
= 1 A
I
OUT
= 1 mA
2.0
C
NR
= 0.01
µF
1.5
C
NR
= 0.1
µF
C
NR
= 0.0047
µF
C
NR
= 0.001
µF
1.0
0.5
1k
10k
100k
0.0
100
1k
10k
100k
Frequency (Hz)
Frequency (Hz)
Frequency (Hz)
Figure 4.
Figure 5.
Figure 6.
5
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