TPS77918DGKR Datasheet, PDF (1/22 Pages) Texas Instruments – 250-mA LDO REGULATOR WITH INTEGRATED RESET IN A MSOP8 PACKAGE

TPS77901, TPS77918, TPS77925, TPS77930
250-mA LDO REGULATOR WITH INTEGRATED RESET IN A MSOP8 PACKAGE
D Open Drain Power-On Reset With 220-ms
Delay
D 250-mA Low-Dropout Voltage Regulator
D Available in 1.8-V, 2.5-V, 3-V, Fixed Output
and Adjustable Versions
D Dropout Voltage Typically 200 mV
at 250 mA (TPS77930)
D Ultralow 92-µA Quiescent Current (Typ)
D 8-Pin MSOP (DGK) Package
D Low Noise (55 µV_rms) With No Bypass
Capacitor (TPS77918)
D 2% Tolerance Over Specified Conditions
For Fixed-Output Versions
D Fast Transient Response
D Thermal Shutdown Protection
D See the TPS773xx and TPS774xx Family of
Devices for Active Low Enable
SLVS283D – MARCH 2000 – REVISED OCTOBER 2000
TPS779xx
DGK PACKAGE
(TOP VIEW)
FB/SENSE
1
RESET
2
EN
3
GND
4
8
OUT
7
OUT
6
IN
5
IN
TPS77930
DROPOUT VOLTAGE
vs
JUNCTION TEMPERATURE
400
VI = 2.9 V
350
300
IO= 0.25 A
250
description
200
IO= 0.15 A
The TPS779xx is a low-dropout regulator with
150
integrated power-on reset. The device is capable
of supplying 250 mA of output current with a
100
dropout of 200 mV (TPS77930). Quiescent
current is 92 µA at full load dropping down to 1 µA
50
IO= 0.05 A
when the device is disabled. The device is
optimized to be stable with a wide range of output
0
–50 –30 –10 10 30 50 70 90 110 130
capacitors including low ESR ceramic (10 µF) or
low capacitance (1 µF) tantalum capacitors. The
TJ – Junction Temperature – °C
device has extremely low noise output performance (55 µV_rms) without using any added filter capacitors.
TPS779xx is designed to have a fast transient response for larger load current changes.
The TPS779xx is offered in 1.8-V, 2.5-V, and 3-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 TPS779xx family is available in 8-pin MSOP (DGK) packages.
Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 200 mV
at an output current of 250 mA for 3.3 volt option) and is directly proportional to the output current. Additionally,
since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent
of output loading (typically 92 µA over the full range of output current, 0 mA to 250 mA). These two key
specifications yield a significant improvement in operating life for battery-powered systems.
The device is enabled when the EN pin is connected to a high-level input voltage. This LDO family also features
a sleep mode; applying a TTL low signal to EN (enable) shuts down the regulator, reducing the quiescent current
to less than 1 µA at T_J = 25°C.
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.
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Copyright  2000, Texas Instruments Incorporated
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