Texas Instruments LM140LQML Handleiding

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LM140LQML

www.ti.com

SNVS381A–MARCH2006–REVISEDMAY2013

LM140LQMLSeries3-TerminalPositiveRegulators

CheckforSamples:LM140LQML

1

FEATURES

DESCRIPTION

TheLM140Lseriesofthreeterminalpositive

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•LineRegulationof0.04%/V

regulatorsisavailablewithseveralfixedoutput

•LoadRegulationof0.01%/mA

voltagesmakingthemusefulinawiderangeof

•OutputVoltageTolerancesof±2%atT

j

=25°C

applications.TheLM140LAisanimprovedversionof

and±4%overtheTemperatureRange

theLM78LXXserieswithatighteroutputvoltage

tolerance(specifiedoverthefullmilitarytemperature

•OutputCurrentof100mA

range),higherripplerejection,betterregulationand

•InternalThermalOverloadProtection

lowerquiescentcurrent.TheLM140LAregulators

•OutputTransistorSafeAreaProtection

have±2%V

OUT

specification,0.04%/Vlineregulation,

and0.01%/mAloadregulation.Whenusedasa

•InternalShortCircuitCurrentLimit

zenerdiode/resistorcombinationreplacement,the

LM140LAusuallyresultsinaneffectiveoutput

impedanceimprovementoftwoordersofmagnitude,

andlowerquiescentcurrent.Theseregulatorscan

providelocaloncardregulation,eliminatingthe

distributionproblemsassociatedwithsinglepoint

regulation.ThevoltagesavailableallowtheLM140LA

tobeusedinlogicsystems,instrumentation,Hi-Fi,

andothersolidstateelectronicequipment.Although

designedprimarilyasfixedvoltageregulators,these

devicescanbeusedwithexternalcomponentsto

obtainadjustablevoltagesandcurrents.

Withadequateheatsinkingtheregulatorcandeliver

100mAoutputcurrent.Currentlimitingisincludedto

limitthepeakoutputcurrenttoasafevalue.Safe

areaprotectionfortheoutputtransistorisprovidedto

limitinternalpowerdissipation.Ifinternalpower

dissipationbecomestoohighfortheheatsinking

provided,thethermalshut-downcircuittakesover,

preventingtheICfromoverheating.

OutputVoltageOptions

DeviceIDOutputVoltage

LM140LA-5.05V

LM140LA-1212V

LM140LA-1515V

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Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2006–2013,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Product specificaties