Datasheet

TPS78915, TPS78918, TPS78925, TPS78928, TPS78930
ULTRALOW-POWER LOW-NOISE 100-mA
LOW-DROPOUT LINEAR REGULATORS
SLVS300A – SEPTEMBER 2000 – REVISED MAY 2001
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 5
T
J
– Junction Temperature – °C
TPS78925
OUTPUT VOLTAGE
vs
JUNCTION TEMPERATURE
2.485
2.500
2.515
– Output Voltage – V
V
O
2.510
2.490
I
O
= 1 mA
I
O
= 100 mA
V
I
= 3.5 V
C
o
= 4.7 µF
2.505
–40 5–25 20 35 65 110 12550–10 80
95
2.495
Figure 6
T
J
– Junction Temperature – °C
TPS78930
OUTPUT VOLTAGE
vs
JUNCTION TEMPERATURE
3.000
2.985
3.015
3.005
3.010
– Output Voltage – V
V
O
I
O
= 100 mA
I
O
= 1 mA
–40 5–25 20 35 65 110 12550–10 80
95
2.995
2.990
V
I
= 4 V
C
o
= 4.7 µF
Figure 7
T
J
– Junction Temperature – °C
14
21
TPS78930
GROUND CURRENT
vs
JUNCTION TEMPERATURE
Ground Current – Aµ
V
I
= 4 V
C
o
= 4.7 µF
20
19
18
17
16
15
I
O
= 1 mA
I
O
= 100 mA
–40 5–25 20 35 65 110 12550–10 80
95
Figure 8
f – Frequency – Hz
1k 10k 100k
I
O
= 1 mA
V
I
= 4 V
C
o
= 4.7 µF
C
(byp)
= 0.1 µF
0
1000
200
400
600
1200
800
100
I
O
= 100 mA
nV/
Hz
Output Spectral Noise Density –
TPS78930
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY