TPS7415, TPS7418, TPS7425, TPS7430, TPS7433
FAST-TRANSIENT-RESPONSE USING SMALL OUTPUT CAPACITOR
200-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS212 – DECEMBER 1999
TYPICAL CHARACTERISTICS
RIPPLE REJECTION
vs
FREQUENCY
80
70
C
= 1 µF
= 100 mA
L
60
I
O
C
= 1 µF
L
I
O
= 1 mA
50
40
C
= 1 µF
= 200 mA
L
I
O
30
20
10
0
10
100
1k
10k
100k
1M
10M
f – Frequency – Hz
Figure 12
TPS7418
LINE TRANSIENT RESPONSE
TPS7418
LOAD TRANSIENT RESPONSE
100
C
= 10 µF
O
200 mA
25 µs
di/dt =
50
0
200
0
–200
–300
–50
3.8
2.8
200
0
C
= 1 µF
O
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
t – Time – ms
1
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
t – Time – ms
1
Figure 13
Figure 14
8
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