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LP3892ESX-1.5 Datasheet(PDF) 1 Page - Texas Instruments

Part # LP3892ESX-1.5
Description  LP3892 1.5A Fast-Response Ultra Low Dropout Linear Regulators
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LP3892ESX-1.5 Datasheet(HTML) 1 Page - Texas Instruments

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LP3892
www.ti.com
SNVS236D – SEPTEMBER 2003 – REVISED APRIL 2013
LP3892 1.5A Fast-Response Ultra Low Dropout Linear Regulators
Check for Samples: LP3892
1
FEATURES
DESCRIPTION
The LP3892 is a high current, fast response regulator
2
Ultra Low Dropout Voltage (140 mV at 1.5A
which can maintain output voltage regulation with
typ)
minimum input to output voltage drop. Fabricated on
Low Ground Pin Current
a CMOS process, the device operates from two input
Load Regulation of 0.04%/A
voltages: Vbias provides voltage to drive the gate of
the N-MOS power transistor, while Vin is the input
60 nA Typical Quiescent Current in Shutdown
voltage which supplies power to the load. The use of
1.5% Output Accuracy (25°C)
an external bias rail allows the part to operate from
TO-220, DDPAK/TO-263 and SO PowerPAD-8
ultra low Vin voltages. Unlike bipolar regulators, the
Packages
CMOS
architecture
consumes
extremely
low
quiescent current at any output load current. The use
Over Temperature/Over Current Protection
of an N-MOS power transistor results in wide
−40°C to +125°C Junction Temperature Range
bandwidth, yet minimum external capacitance is
required to maintain loop stability.
APPLICATIONS
The fast transient response of these devices makes
DSP Power Supplies
them
suitable
for
use
in
powering
DSP,
Microcontroller Core voltages and Switch Mode
Server Core and I/O Supplies
Power Supply post regulators. The parts are available
PC Add-in-Cards
in TO-220, DDPAK/TO-263 and SO PowerPAD-8
Local Regulators in Set-Top Boxes
packages.
Microcontroller Power Supplies
Dropout Voltage:140mV (typ) at 1.5A load current.
High Efficiency Power Supplies
Ground Pin Current: 3 mA (typ) at full load.
SMPS Post-Regulators
Shutdown Current: 60 nA (typ) when S/D pin is low.
Precision Output Voltage: 1.5% room temperature
accuracy.
TYPICAL APPLICATION CIRCUIT
At least 10 µF of input and output capacitance is required for stability.
*Tantalum capacitors are recommended. Aluminum electrolytic capacitors may be used for restricted temperature
range. See application hints.
1
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.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2003–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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