TPS7415, TPS7418, TPS7425, TPS7430, TPS7433
FAST-TRANSIENT-RESPONSE USING SMALL OUTPUT CAPACITOR
200-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS212 – DECEMBER 1999
TYPICAL CHARACTERISTICS
TPS7433
OUTPUT SPECTRAL NOISE DENSITY
GROUND CURRENT
vs
JUNCTION TEMPERATURE
vs
FREQUENCY
10000
1000
100
10
20µV Hz
2µV Hz
V =4.3 V
V = 4.3 V
I
L
A
I
C
T
= 1 µF
= 25°C
I = 1 mA
O
I
= 200 mA
O
I
= 100 mA
O
I
= 200 mA
O
200nV Hz
I
O
= 1 mA
20nV Hz
2nV Hz
1
–50
0
J
50
100
1k
10k
f – Frequency – Hz
100k
150
250
T
– Junction Temperature – °C
Figure 8
Figure 9
TPS7430
DROPOUT VOLTAGE
vs
JUNCTION TEMPERATURE
OUTPUT IMPEDANCE
vs
FREQUENCY
250
200
150
100
50
100
V = 2.9 V
I
V = 4.3 V
I
C
= 1 µF:
= 1 mA
L
C
= 1 µF
= 25°C
L
I
O
T
A
200 mA
10
1
100 mA
C
= 1 µF
= 200 mA
0.1
L
I
O
10 mA
0.01
0
–40
10
60
110
0.01
0.1
1
10
100
1000
T
J
– Junction Temperature – °C
f – Frequency – kHz
Figure 10
Figure 11
7
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