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LP38693

-ADJ

IN

OUT

GND

1 PF *

1 PF *

V

OUT

V

IN

R1

R2

V

EN

EN

ADJ

LP38691

-ADJ

INOUT

GND

1 PF *

1 PF *

V

OUT

V

IN

R1

R2

ADJ

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Reference

Design

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

LP38691-ADJ

,

LP38693-ADJ

,

LP38691-ADJ-Q1

,

LP38693-ADJ-Q1

SNVS324K–JANUARY2005–REVISEDJANUARY2016

LP3869x-ADJ/Q1500-mALow-DropoutCMOSLinearRegulators

StableWithCeramicOutputCapacitors

1

1Features

1

•WideInputVoltageRange:2.7Vto10V

•AllWSONOptionsareAvailableasAEC-Q100

Grade1

•OutputVoltageRange:1.25Vto9V

•2%Adjust(ADJ)PinVoltageAccuracy(25°C)

•LowDropoutVoltage:250mVat500mA

(Typical,5-VOut)

•Precision(Trimmed)BandgapReference

•EnsuredSpecsfor–40°Cto+125°C

•1-µAOff-StateQuiescentCurrent

•ThermalOverloadProtection

•FoldbackCurrentLimiting

•Ground(GND)PinCurrent:55µA(Typical)atFull

Load

•Enable(EN)Pin(LP38693-ADJ)

2Applications

•HardDiskDrives

•NotebookComputers

•Battery-PoweredDevices

•PortableInstrumentation

3Description

TheLP3869x-ADJlow-dropoutCMOSlinear

regulatorsprovide2%precisionreferencevoltage,

extremelylowdropoutvoltage(250mVat500-mA

loadcurrent,V

OUT

=5V),andexcellentAC

performanceusingultra-lowequivalentseries

resistance(ESR)ceramicoutputcapacitors.

ThelowthermalresistanceoftheWSONandSOT-

223packagesallowuseofthefulloperatingcurrent

eveninhighambienttemperatureenvironments.

TheuseofaPMOSpowertransistormeansthatno

DCbasedrivecurrentisrequiredtobiasit,thus

allowingtheGND-pincurrenttoremainbelow100µA

regardlessofloadcurrent,inputvoltage,oroperating

temperature.

DeviceInformation

(1)

PARTNUMBERPACKAGEBODYSIZE(NOM)

LP38691-ADJWSON(6)3.00mm×3.00mm

LP38693-ADJ

SOT-223(5)6.50mm×3.56mm

WSON(6)3.00mm×3.00mm

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

TypicalApplicationCircuits

V

OUT

=V

ADJ

×(1+R1/R2)

*Minimumvaluerequiredforstability

Produktspecifikationer