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
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating junction temperature range (T
J
= –40°C to
125°C), V
I
= V
O(typ)
+ 1 V, I
O
= 1 mA, EN = 0 V, C
O
= 10 µF (unless otherwise noted) (continued)
PARAMETER TEST CONDITIONS
MIN TYP MAX UNIT
Minimum input voltage for valid PG I
(PG)
= 300 µA, V
(PG)
≤ 0.8 V 1.1 V
PG
Trip threshold voltage V
O
decreasing 79 85 %V
O
PG
(TPS774xx)
Hysteresis voltage Measured at V
O
0.5 %V
O
(TPS774
xx
)
Output low voltage V
I
= 2.7 V, I
(PG)
= 1 mA 0.15 0.4 V
Leakage current V
(PG)
= 5 V 1 µA
Minimum input voltage for valid RESET I
(RESET)
= 300 µA 1.1 V
Trip threshold voltage V
O
decreasing 92 98 %V
O
Reset
Hysteresis voltage Measured at V
O
0.5 %V
O
Reset
(TPS773xx)
Output low voltage V
I
= 2.7 V, I
(RESET)
= 1 mA 0.15 0.4 V
Leakage current V
(RESET)
= 5 V 1 µA
RESET time-out delay 220 ms
2 8 V Output
I
O
= 250 mA, T
J
= 25°C 270
V
Dropout voltage (see Note 5)
2.8-V Output
I
O
= 250 mA 475
V
DO
Dropout voltage (see Note 5)
3 3 V Output
I
O
= 250 mA, T
J
= 25°C 200
mV
3.3-V Output
I
O
= 250 mA 330
mV
V
Dropout voltage (see Note 5)
5 0 V Output
I
O
= 250 mA, T
J
= 25°C 125
V
DO
Dropout voltage (see Note 5) 5.0-V Output
I
O
= 250 mA 190
NOTE 5: IN voltage equals V
O
(typ) – 100 mV; 1.5 V, 1.6 V, 1.8-V, and 2.7-V dropout voltage limited by input voltage range limitations (i.e., 3.3
V input voltage needs to drop to 3.2 V for purpose of this test).
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
V
Output voltage
vs Output current 2, 3
V
O
Output voltage
vs Junction temperature
4, 5
Ground current vs Junction temperature 6
Power supply rejection ratio vs Frequency 7
Output spectral noise density vs Frequency 8
Z
o
Output impedance vs Frequency 9
V
Dropout voltage
vs Input voltage 10
V
DO
Dropout voltage
vs Junction temperature
11
Line transient response 12, 14
Load transient response 13, 15
Output voltage and enable pulse vs Time 16
Equivalent series resistance (ESR) vs Output current 18 – 21