Datasheet

TPS79015, TPS79018, TPS79025, TPS79028, TPS79030
ULTRALOW-POWER LOW-NOISE 50-mA
LOW-DROPOUT LINEAR REGULATORS
SLVS299B – SEPTEMBER 2000 – REVISED MAY 2001
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 13
T
A
– Junction Temperature – °C
5
45
75
– Dropout Voltage – mV
V
DO
TPS79030
DROPOUT VOLTAGE
vs
JUNCTION TEMPERATURE
–40 5–25 20 35 65 110 12550–10 80
95
V
I
= 2.9 V
C
o
= 4.7 µF
I
O
= 50 mA
I
O
= 1 mA
15
25
35
55
65
Figure 14
20
30
40
50
60
70
80
90
100
110
f – Frequency – Hz
TPS79030
RIPPLE REJECTION
vs
FREQUENCY
V
I
= 4 V
C
o
= 4.7 µF
C
(byp)
= 0.1 µF
I
O
= 50 mA
I
O
= 1 mA
1M100k10k1k10010
Ripple Rejection –dB
Figure 15
20
30
40
50
60
70
80
90
100
f – Frequency – Hz
TPS79030
RIPPLE REJECTION
vs
FREQUENCY
V
I
= 4 V
C
o
= 4.7 µF
C
(byp)
= 0.01 µF
I
O
= 50 mA
I
O
= 1 mA
1M100k10k1k10010
Ripple Rejection –dB
20
30
40
50
60
70
80
90
100
f – Frequency – Hz
TPS79030
RIPPLE REJECTION
vs
FREQUENCY
V
I
= 4 V
C
o
= 4.7 µF
C
(byp)
= 0.001 µF
I
O
= 50 mA
I
O
= 1 mA
1M100k10k1k10010
Ripple Rejection –dB
Figure 16