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LP38853MR-ADJ |LP38853MRADJNSN/a102avai3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Soft-Start 8-SO PowerPAD -40 to 125
LP38853SADJNSN/a43avai3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Soft-Start 7-DDPAK/TO-263 -40 to 125


LP38853MR-ADJ ,3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Soft-Start 8-SO PowerPAD -40 to 125Features 3 DescriptionThe LP38853 is a high-current, fast-response1• Wide V Supply Operating Range: ..
LP38853SADJ ,3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Soft-Start 7-DDPAK/TO-263 -40 to 125Maximum Ratings may cause permanent damage to the device. These are stress ratingsonly, which do no ..
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LP38853MR-ADJ-LP38853SADJ
3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Soft-Start
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OUT VOUTVIN
VBIAS
CIN
COUTCBIAS
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LP38853

SNVS335F –DECEMBER 2006–REVISED NOVEMBER 2016
LP38853 3-A Fast-Response High-Accuracy Adjustable LDO Linear Regulator
With Enable and Soft Start Features
Wide VBIAS Supply Operating Range:3Vto 5.5V Adjustable VOUT Range: 0.8Vto 1.8V Dropout Voltageof 240 mV (Typical)at 3-A Load
Current Precision VADJ AcrossAll Line and Load
Conditions: ±1.5% VADJforTJ= 25°C ±2% VADJ for 0°C≤TJ≤ +125°C ±3% VADJ for –40°C≤TJ≤ +125°C Overtemperature and Overcurrent Protection Stable with 10-µF Ceramic Capacitors −40°Cto +125°C Operating Junction Temperature
Range Applications ASIC Power Suppliesin: Desktops, Notebooks, Graphics Cards, and
Servers Gaming Set-Top Boxes, Printers, and Copiers Server Core and I/O Supplies DSP and FPGA Power Supplies SMPS Post-Regulator Description
The LP38853 is a high-current, fast-response
regulator that can maintain output voltage regulation
with extremely low input-to-output voltage drop.
Fabricated ona CMOS process, the device operates
from two input voltages: VBIAS provides voltageto
drive the gateof the NMOS power transistor; VINis
the input voltage which supplies powerto the load.
The useof an external bias rail allows the deviceto
operate from ultra-low VIN voltages. Unlike bipolar
regulators, the CMOS architecture consumes
extremely low quiescent currentat any output load
current. The useof an NMOS power transistor results wide bandwidth, yet minimum external capacitance requiredto maintain loop stability.
The fast transient responseof this device makesit
suitable for usein powering DSP and microcontroller
core voltages, and switch-mode power-supply post
regulators. Dropout Voltage: 240 mV (typical)at 3-A load
current Low Ground Pin Current: 10 mA (typical)at 3-A
load current Soft Start: Programmable soft-start time
Device Information(1)

(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Simplified Schematic
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