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TPS77901DGKR Datasheet(PDF) 1 Page - Texas Instruments

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No. de pieza TPS77901DGKR
Descripción Electrónicos  250-mA LDO REGULATOR WITH INTEGRATED RESET IN A MSOP8 PACKAGE
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

TPS77901DGKR Datasheet(HTML) 1 Page - Texas Instruments

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TPS77901, TPS77918, TPS77925, TPS77930
250-mA LDO REGULATOR WITH INTEGRATED RESET IN A MSOP8 PACKAGE
SLVS283D – MARCH 2000 – REVISED OCTOBER 2000
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
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 µVrms) 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
description
The TPS779xx is a low-dropout regulator with
integrated power-on reset. The device is capable
of supplying 250 mA of output current with a
dropout of 200 mV (TPS77930). Quiescent
current is 92
µA at full load dropping down to 1 µA
when the device is disabled. The device is
optimized to be stable with a wide range of output
capacitors including low ESR ceramic (10
µF) or
low capacitance (1
µF) tantalum capacitors. The
device has extremely low noise output performance (55
µVrms) 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 TJ = 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.
Copyright
 2000, Texas Instruments Incorporated
FB/SENSE
RESET
EN
GND
OUT
OUT
IN
IN
TPS779xx
DGK PACKAGE
(TOP VIEW)
1
2
3
4
8
7
6
5
200
150
100
0
–50 –30
–10
10
30
50
70
300
350
400
90
110
130
250
50
TPS77930
DROPOUT VOLTAGE
vs
JUNCTION TEMPERATURE
TJ – Junction Temperature – °C
IO= 0.05 A
IO= 0.15 A
IO= 0.25 A
VI = 2.9 V


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