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
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D Open Drain Power-On Reset With 220-ms
Delay (TPS773xx)
D Open Drain Power-Good (PG) Status
Output (TPS774xx)
D 250-mA Low-Dropout Voltage Regulator
D Available in 1.5-V, 1.6-V (TPS77316 Only),
1.8-V, 2.7-V, 2.8-V, 3.3-V, 5.0-V Fixed Output
and Adjustable Versions
D Dropout Voltage Typically 200 mV
at 250 mA (TPS77333, TPS77433)
D Ultralow 92-µA Quiescent Current (Typ)
D 8-Pin MSOP (DGK) Package
D Low Noise (55 µV
rms
) Without an External
Filter (Bypass) Capacitor (TPS77318,
TPS77418)
D 2% Tolerance Over Specified Conditions
For Fixed-Output Versions
D Fast Transient Response
D Thermal Shutdown Protection
D See the TPS779xx Family of Devices for
Active High Enable
description
The TPS773xx and TPS774xx are low-dropout
regulators with integrated power-on reset and
power good (PG) function respectively. These
devices are capable of supplying 250 mA of output
current with a dropout of 200 mV (TPS77333,
TPS77433). Quiescent current is 92 µA at full load
dropping down to 1 µA when device is disabled.
These devices are optimized to be stable with a
wide range of output capacitors including low ESR
ceramic (10 µF) or low capacitance (1 µF)
tantalum capacitors. These devices have ex-
tremely low noise output performance (55 µV
rms
)
without using any added filter capacitors.
TPS773xx and TPS774xx are designed to have
fast transient response for larger load current
changes.
The TPS773xx or TPS774xx is offered in 1.5-V, 1.6 V (TPS77316 only), 1.8-V, 2.7-V, 2.8-V, 3.3-V, and 5.0-V
fixed-voltage versions and in an adjustable version (programmable over the range of 1.5 V to 5.5 V). Output
voltage tolerance is 2% over line, load, and temperature ranges. The TPS773xx and TPS774xx families are
available in 8-pin MSOP (DGK) packages.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright  2001, Texas Instruments Incorporated
–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
OUT
OUT
IN
IN
8
7
6
5
1
2
3
4
FB/SENSE
RESET
EN
GND
TPS773xx
DGK Package
(TOP VIEW)
OUT
OUT
IN
IN
8
7
6
5
1
2
3
4
FB/SENSE
PG
EN
GND
TPS774xx
DGK Package
(TOP VIEW)