Datasheet

TPS767D301-Q1, TPS767D318-Q1, TPS767D325-Q1
DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS
SGLS231A − FEBRUARY 2004 − JUNE 2008
11
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