Datasheet

TPS7415, TPS7418, TPS7425, TPS7430, TPS7433
FAST-TRANSIENT-RESPONSE USING SMALL OUTPUT CAPACITOR
200-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS212 – DECEMBER 1999
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
f – Frequency – Hz
100 1k 10k10
Ripple Rejection – dB
RIPPLE REJECTION
vs
FREQUENCY
0
20
40
60
80
50
70
30
10
100k 1M 10M
C
L
= 1 µF
I
O
= 100 mA
C
L
= 1 µF
I
O
= 1 mA
C
L
= 1 µF
I
O
= 200 mA
Figure 12
Figure 13
V
O
– Change in
–200
3.8
–300
2.8
200
0
TPS7418
LINE TRANSIENT RESPONSE
V
I
t – Time – ms
0 0.30.20.1 0.4 0.5 0.70.6 0.8 0.9 1
C
O
= 1 µF
– Input Voltage – V
∆
Output Voltage – mV
Figure 14
–50
200
50
0
100
0
t – Time – ms
C
O
= 10 µF
TPS7418
LOAD TRANSIENT RESPONSE
0 0.30.20.1 0.4 0.5 0.70.6 0.8 0.9 1
I – Output Current – mA
O
V
O
– Change in
∆
Output Voltage – mV
200 mA
25 µs
di/dt =