Datasheet

TPS78915, TPS78918, TPS78925, TPS78928, TPS78930
ULTRALOW-POWER LOW-NOISE 100-mA
LOW-DROPOUT LINEAR REGULATORS
SLVS300A – SEPTEMBER 2000 – REVISED MAY 2001
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
5
15
25
35
45
55
65
75
85
95
105
115
125
–40 –25 5 35506580 95110
135
125
I
O
= 100 mA
I
O
= 1 mA
V
I
= 2.9 V,
C
o
= 4.7 µF
T
J
– Junction Temperature – °C
– Dropout Voltage – mV
V
DO
TPS78930
DROPOUT VOLTAGE
vs
JUNCTION TEMPERATURE
20–10
Figure 13
Figure 14
1 M100 k10 k1 k100
Ripple Rejection – dB
f – Frequency – Hz
RIPPLE REJECTION
vs
FREQUENCY
90
80
70
60
50
40
30
20
10
TPS78930
V
I
= 4 V
C
o
= 10 µF
C
(byp)
= 0.1 µF
100
110
120
I
O
= 100 mA
I
O
= 1 mA
1 M100 k10 k1 k100
Ripple Rejection – dB
f – Frequency – Hz
RIPPLE REJECTION
vs
FREQUENCY
100
60
50
40
30
20
10
10
TPS78930
V
I
= 4 V
C
o
= 10 µF
C
(byp)
= 0.01 µF
70
80
90
I
O
= 100 mA
I
O
= 1 mA
0
Figure 15
1 M100 k10 k1 k100
Ripple Rejection – dB
f – Frequency – Hz
RIPPLE REJECTION
vs
FREQUENCY
90
80
70
60
50
40
30
20
10
TPS78930
100
110
120
I
O
= 100 mA
I
O
= 1 mA
V
I
= 4 V
C
o
= 10 µF
C
(byp)
= 0.001 µF
Figure 16