Datasheet

TPS79015, TPS79018, TPS79025, TPS79028, TPS79030
ULTRALOW-POWER LOW-NOISE 50-mA
LOW-DROPOUT LINEAR REGULATORS
SLVS299B – SEPTEMBER 2000 – REVISED MAY 2001
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 5
T
J
– Junction Temperature – °C
TPS79025
OUTPUT VOLTAGE
vs
JUNCTION TEMPERATURE
2.485
2.510
2.500
2.515
– Output Voltage – V
V
O
2.490
I
O
= 1 mA
I
O
= 50 mA
V
I
= 3.5 V
C
o
= 4.7 µF
2.505
2.495
–40 5–25 20 35 65 110 12550–10 80
95
Figure 6
2.985
2.990
2.995
3.000
3.005
3.010
3.015
–40 –25 –10 5 20 35 50 65 80 95 110 125
I
O
= 50 mA
I
O
= 1 mA
T
J
– Junction Temperature – °C
TPS79030
OUTPUT VOLTAGE
vs
JUNCTION TEMPERATURE
– Output Voltage – V
V
O
V
I
= 4 V
C
o
= 4.7 µF
Figure 7
T
J
– Junction Temperature – °C
15
22
TPS79030
GROUND CURRENT
vs
JUNCTION TEMPERATURE
Ground Current – Aµ
V
I
= 4 V
C
o
= 4.7 µF
21
20
19
18
17
16
I
O
= 1 mA
I
O
= 50 mA
–40 5–25 20 35 65 110 12550–10 80
95
Figure 8
0
200
400
600
800
1000
1200
100 1k 10k 100k
f – Frequency – Hz
V
I
= 4 V
C
o
= 4.7 µF
C
(byp)
= 0.1 µF
TPS79030
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
I
O
= 1 mA
I
O
= 50 mA
nV/ HzOutput Spectral Noise Density –