Datasheet


  
    
SLVS323B − FEBRUARY 2001 − REVISED JANUARY 2007
5
TYPICAL CHARACTERISTICS
Figure 1
2.480
2.485
2.490
2.495
2.500
2.505
2.510
2.515
2.520
0 20 40 60 80 100
V
I
= 3.5 V
V
O
= 2.5 V
C
o
= 4.7 µF
T
J
= 25° C
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
− Output Voltage − V
V
O
I
O
− Output Current − mA
Figure 2
0.685
0.690
0.695
0.700
0.705
0.710
0.715
0.720
0 20406080100
V
I
= 2.7 V
V
O
= 0.7 V
C
o
= 4.7 µF
T
J
= 25° C
I
O
− Output Current − mA
− Output Voltage − V
V
O
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
Figure 3
0.6645
0.6650
0.6655
0.6660
0.6665
0.6670
0.6675
0.6680
−40 −25−10 5 20 35 50 65 80 95 110 125
V
I
= 2.7 V
V
O
= V
ref
C
o
= 4.7 µF
I
O
= 1 mA
I
O
= 100 mA
T
J
− Junction Temperature − °C
OUTPUT VOLTAGE
vs
JUNCTION TEMPERATURE
− Output Voltage − V
V
O
Figure 4
T
J
− Junction Temperature − °C
GROUND CURRENT
vs
JUNCTION TEMPERATURE
Ground Current −
Aµ
15
17
19
21
23
25
27
−40 −25 −10 5 20 35 50 65 80 95 110 125
I
O
= 100 mA
I
O
= 10 µA
V
I
= 2.7 V
V
O
= 0.7 V
Figure 5
0
50
100
150
200
250
300
350
400
450
500
100 1 k 10 k 100 k
f − Frequency − Hz
V HzOutput Spectral Noise Density − n
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
V
I
= 2.7 V
V
O
= 0.7 V,
I
O
= 1 mA,
C
o
= 4.7 µF
Figure 6
1
0
−0.5
−1.5
10 100 1k 10 k
1.5
2.5
3.5
100 k 1 M
f − Frequency − Hz
− Output Impedance −z
o
Ω
OUTPUT IMPEDANCE
vs
FREQUENCY
V
I
= 2.7 V
V
O
= 0.7 V
C
o
= 4.7 µF
R
ESR
≈ 0.3
I
O
= 100 mA
I
O
= 1 mA
−1
0.5
2
3
Figure 7
20
40
60
80
100
120
140
160
180
246810
DROPOUT VOLTAGE
vs
INPUT VOLTAGE
V
I
− Input Voltage − V
− Dropout Voltage − mV
V
DO
T
J
= 25°C
T
J
= −40°C
I
O
= 100 mA
T
J
= 125°C
Figure 8
1
10
100
1000
−40 −25 −10 5 20 35 50 65 80 95 110 125
I
O
= 100 mA
I
O
= 10 mA
T
J
− Junction Temperature − °C
− Dropout Voltage − mV
V
DO
DROPOUT VOLTAGE
vs
JUNCTION TEMPERATURE
V
I
= 3.2 V
C
O
= 4.7 µF
Figure 9
40
10
−10
10 100 1 k 10 k
50
80
90
100 k 1 M 10 M
0
20
30
60
70
I
O
= 100 mA
I
O
= 1 mA
Power Supply Ripple Rejection − dB
f − Frequency − Hz
POWER SUPPLY RIPPLE REJECTION
vs
FREQUENCY
V
I
= 2.7 V
V
O
= 0.7 V
C
o
= 4.7 µF
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