TPS767D301, TPS767D318, TPS767D325
DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS
SLVS209B – JULY 1999 – REVISED APRIL 2000
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 10
100k10k
PSRR – Power Supply Ripple Rejection – dB
f – Frequency – Hz
POWER SUPPLY RIPPLE REJECTION
vs
FREQUENCY
70
60
50
40
30
20
10
0
–10
90
80
1k10010
1M
V
O
= 3.3 V
V
I
= 4.3 V
C
O
= 10 µF
I
O
= 1 A
T
A
= 25°C
Figure 11
f – Frequency – Hz
10
2
10
3
10
4
10
5
10
–5
10
–6
10
–8
10
–7
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
I
O
= 7 mA
I
O
= 1 A
V
I
= 4.3 V
C
O
= 10 µF
T
A
= 25°C
– Output Spectral Noise Density – V/ HzV
n
Figure 12
f – Frequency – kHz
– Output Impedance –Z
o
Ω
OUTPUT IMPEDANCE
vs
FREQUENCY
10
1
10
2
10
5
10
6
0
10
–1
10
–2
10
4
10
3
I
O
= 1 mA
I
O
= 1 A
V
I
= 4.3 V
C
O
= 10 µF
T
A
= 25°C
Figure 13
T
A
– Free-Air Temperature – °C
–40 0 20 120
10
3
–60 40 60 80 100
– Dropout Voltage – mV
V
DO
DROPOUT VOLTAGE
vs
FREE-AIR TEMPERATURE
10
2
10
1
10
0
10
–1
10
–2
–20 140
I
O
= 1 A
I
O
= 10 mA
I
O
= 0
V
O
= 3.3 V
C
O
= 10 µF
