Datasheet

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TYPICAL CHARACTERISTICS
2.795
2.796
2.797
2.798
2.799
2.8
2.801
2.802
2.803
2.804
2.805
0 50 100 150 200
I
O
− Output Current − mA
TPS79328
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
V
I
= 3.8 V
C
o
= 10 µF
T
J
= 25° C
− Output Voltage − V
V
O
2.775
2.78
2.785
2.79
2.795
2.8
2.805
−40 −25 −10 5 20 35 50 65 80 95 110 125
T
J
− Junction Temperature − °C
TPS79328
OUTPUT VOLTAGE
vs
JUNCTION TEMPERATURE
− Output Voltage − V
V
O
I
O
= 200 mA
I
O
= 1 mA
V
I
= 3.8 V
C
o
= 10 µF
0
50
100
150
200
250
−40 −25−10 5 20 35 50 65 80 95 110 125
T
J
− Junction Temperature − °C
TPS79328
GROUND CURRENT
vs
JUNCTION TEMPERATURE
Ground Current − Aµ
I
O
= 1 mA
V
I
= 3.8 V
C
o
= 10 µF
I
O
= 200 mA
0
0.05
0.1
0.15
0.2
0.25
0.3
100 1 k 10 k 100 k
f − Frequency − Hz
I
O
= 1 mA
V
I
= 3.8 V
C
o
= 2.2 µF
C
(byp)
= 0.1 µF
I
O
= 200 mA
TPS79328
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
V/ HzOutput Spectral Noise Density −
µ
0
0.05
0.1
0.15
0.2
0.25
0.3
100 1 k 10 k 100 k
V/ HzOutput Spectral Noise Density −
µ
f − Frequency − Hz
I
O
= 1 mA
I
O
= 200 mA
TPS79328
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
V
I
= 3.8 V
C
o
= 10 µF
C
(byp)
= 0.1 µF
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
100 1 k 10 k 100 k
f − Frequency − Hz
V/ HzOutput Spectral Noise Density −
TPS79328
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
V
I
= 3.8 V
I
O
= 200 mA
C
o
= 10 µF
C
(byp)
= 0.1 µF
C
(byp)
= 0.001 µF
µ
C
(byp)
= 0.0047 µF
C
(byp)
= 0.01 µF
100 1 M10 1 k
f − Frequency − Hz
10 k
− Output Impedance −Z
o
Ω
OUTPUT IMPEDANCE
vs
FREQUENCY
100 k
I
O
= 1 mA
0
0.5
1
1.5
2
2.5
0
I
O
= 100 mA
10 M
V
I
= 3.8 V
C
o
= 10 µF
T
J
= 25° C
0.001 0.01 0.1
RMS − Root Mean Squared Output Noise −
ROOT MEAN SQUARED OUTPUT NOISE
vs
BYPASS CAPACITANCE
(RMS)
Vµ
C
(byp)
− Bypass Capacitance − µF
0
10
20
30
40
50
60
V
O
= 2.8 V
I
O
= 200 mA
C
o
= 10 µF
BW = 100 Hz to 100
kHz
0
20
40
60
80
100
120
140
160
180
−40 −25−10 5 20 35 50 65 80 95 110 125
I
O
= 200 mA
I
O
= 10 mA
V
I
= 2.7 V
C
o
= 10 µF
T
J
− Junction Temperature − °C
− Dropout Voltage − mV
V
DO
TPS79328
DROPOUT VOLTAGE
vs
JUNCTION TEMPERATURE
TPS79301-EP , , TPS79318-EP , , TPS79325-EP , , TPS79328-EP
TPS793285-EP , TPS79330-EP , TPS79333-EP , TPS793475-EP
SGLS163B – APRIL 2003 – REVISED NOVEMBER 2006
Figure 1. Figure 2. Figure 3.
Figure 4. Figure 5. Figure 6.
Figure 7. Figure 8. Figure 9.
7
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