TPS77001, TPS77012, TPS77015, TPS77018, TPS77025
TPS77027, TPS77028, TPS77030, TPS77033, TPS77050
ULTRA LOW-POWER 50-mA LOW-DROPOUT LINEAR REGULATORS
SLVS210C – JUNE 1999 – REVISED SEPTEMBER 1999
TYPICAL CHARACTERISTICS
TPS77033
DROPOUT VOLTAGE
vs
OUTPUT IMPEDANCE
vs
FREQUENCY
FREE-AIR TEMPERATURE
100
2
1.8
1.6
V = 4.3 V
V = 3.2 V
I
I
C
= 4.7 µF
C
= 4.7 µF
O
O
I
O
= 50 mA
1.4
1.2
1
10
0.8
I
O
= 10 mA
I
O
= 1 mA
0.6
0.4
0.2
0
I
O
= 50 mA
1k
1
10
100
10k
100k
1M
–60 –40 –20
0
20 40 60 80 100 120 140
f – Frequency – Hz
T
A
– Free-Air Temperature – °C
Figure 9
Figure 10
TPS77033
RIPPLE REJECTION
vs
LDO STARTUP TIME
FREQUENCY
100
90
80
70
60
50
EN
I
O
= 1 mA
40
30
20
I
O
= 50 mA
10
0
V = 4.3 V
I
V
O
C
= 4.7 µF
O
ESR = 0.3 Ω
–10
10
100
1 k
10 k
100 k
1 M
10 M
0
20 40 60 80 100 120 140 160 180 200
f – Frequency – Hz
t – Time – µs
Figure 11
Figure 12
8
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