Datasheet

TPS77301/315/316/318/327/328/333/350 WITH RESET OUTPUT
TPS77401/415/418/427/428/433/450 WITH POWER GOOD OUTPUT
250-mA LDO REGULATORS WITH 8-PIN MSOP PACKAGING
SLVS281E – FEBRUARY 2000 – REVISED JULY 2001
11
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
f – Frequency – Hz
– Output Impedance –Z
o
Ω
10 100 100k 10M
10
1
10k1k
I
O
= 250 mA
TPS77x33
OUTPUT IMPEDANCE
vs
FREQUENCY
0.1
0.01
1M
T
J
= 25 °C
I
O
= 1 mA
Figure 9
Figure 10
200
150
100
0
2.7 3.2 3.7 4.2
300
350
400
4.7
250
50
TPS77x01
DROPOUT VOLTAGE
vs
INPUT VOLTAGE
V
I
– Input Voltage – V
– Dropout Voltage – mV
V
DO
T
J
= 125 °C
T
J
= –40 °C
T
J
= 25 °C
I
O
= 250 mA
Figure 11
–50
0
50
100
150
200
250
300
–40 0 40 80 120 160
TPS77x33
DROPOUT VOLTAGE
vs
JUNCTION TEMPERATURE
T
J
– Junction Temperature – °C
– Dropout Voltage – mV
V
DO
I
O
= 250 mA
I
O
= 10 mA
I
O
= 0 A