LM333

LM133󰁋LM3333-AmpereAdjustableNegativeRegulators

GeneralDescription

TheLM133󰁋LM333areadjustable3-terminalnegativevolt-ageregulatorscapableofsupplyinginexcessofb3󰀟0Aoveranoutputvoltagerangeofb1󰀟2Vtob32V󰀟Theseregulatorsareexceptionallyeasytoapply󰀷requiringonly2externalresistorstosettheoutputvoltageand1outputcapacitorforfrequencycompensation󰀟Thecircuitdesignhasbeenoptimizedforexcellentregulationandlowthermaltransients󰀟Further󰀷theLM133seriesfeaturesinternalcur-rentlimiting󰀷thermalshutdownandsafe-areacompensa-tion󰀷makingthemsubstantiallyimmunetofailurefromover-loads󰀟

TheLM133󰁋LM333serveawidevarietyofapplicationsin-cludinglocalon-cardregulation󰀷programmable-outputvolt-ageregulationorprecisioncurrentregulation󰀟TheLM133󰁋LM333areidealcomplementstotheLM150󰁋LM350adjust-ablepositiveregulators󰀟

Features

YYYYYYYYYYY

Outputvoltageadjustablefromb1󰀟2Vtob32V3󰀟0Aoutputcurrentguaranteed󰀷b55󰀃Ctoa150󰀃CLineregulationtypically0󰀟01%󰁋VLoadregulationtypically0󰀟2%

Excellentrejectionofthermaltransients50ppm󰁋󰀃CtemperaturecoefficientTemperature-independentcurrentlimitInternalthermaloverloadprotectionPaProductEnhancementtestedStandard3-leadtransistorpackageOutputisshortcircuitprotected

ConnectionDiagrams

TO-3

MetalCanPackage

TypicalApplications

AdjustableNegativeVoltageRegulator

TL󰁋H󰁋9065–1

BottomView

SteelTO-3MetalCanPackage

(KSTEEL)

OrderNumberLM133KSTEELor

LM333KSTEEL

SeeNSPackageNumberK02A

TO-220

PlasticPackage

TL󰁋H󰁋9065–3

bVOUTeb1󰀟25V

󰀄C1e

󰀣1

a

R2120X

J󰀣

a

bIADJcR2

J

1mFsolidtantalumor10mFaluminumelectrolyticrequiredforstability󰀟

󰀁C2e1mFsolidtantalumisrequiredonlyifregulatorismorethan4󰀂frompowersupplyfiltercapaci-tor󰀟Outputcapacitorsintherangeof1mFto1000mFofaluminumortantalumelectrolyticarecommonlyusedtoprovideloweroutputimpedanceandimprovedtransientresponse󰀟

TL󰁋H󰁋9065–2

FrontView

3-LeadTO-220PlasticPackage(T)

OrderNumberLM333TSeeNSPackageNumberT03B

C1995NationalSemiconductorCorporationTL󰁋H󰁋9065RRD-B30M115󰁋PrintedinU󰀟S󰀟A󰀟

(Note1)

IfMilitary󰁋Aerospacespecifieddevicesarerequired󰀷pleasecontacttheNationalSemiconductorSalesOffice󰁋Distributorsforavailabilityandspecifications󰀟PowerDissipation

Input-OutputVoltageDifferential

InternallyLimited

35V

AbsoluteMaximumRatings

b65󰀃Ctoa150󰀃CStorageTemperature

LeadTemperature(Soldering󰀷10sec󰀟)TO-3Package300󰀃CTO-220Package260󰀃C

ESDSusceptibilityTBD

OperatingJunctionTemperatureRangeTMINtoTMAX

b55󰀃Ctoa150󰀃CLM133

b40󰀃Ctoa125󰀃CLM333

ElectricalCharacteristicsLM133SpecificationswithstandardtypefaceareforTJe25󰀃C󰀷andthosewith

boldfacetypeapplyoverthefulloperatingtemperaturerange󰀟(Note3)

ParameterReferenceVoltage

Conditions

ILe10mA

3VslVINbVOUTls35V10mAsILs3A󰀷PsPMAX

LineRegulationLoadRegulationThermalRegulationTemperatureStabilityLongTermStabilityAdjustPinCurrentAdjustPinCurrentChangeMinimumLoadCurrentCurrentLimit(Note5)

10mAsILs3A

3󰀟0VslVINbVOUTls35V3VslVINbVOUTls35VIOUTe50mA(Note4)10mAsIOUTs3A󰀷PsPMAX(Notes4󰀷5)10msPulseTMINsTJsTMAXTJe125󰀃C󰀷1000Hours

Typical

b1󰀟250b1󰀝250

Min(Note2)

b1󰀟238b1󰀝225

Max(Note2)

b1󰀟262b1󰀝275

UnitsVV%󰁋V%%󰁋W%%

0󰀟010󰀝020󰀟20󰀝40󰀟0020󰀝40󰀟15657022󰀝51󰀝23󰀝92󰀝40󰀝40󰀟003

3󰀝01󰀝250󰀝3

0󰀟020󰀝050󰀟51󰀝00󰀟01

9010065󰀝02󰀝5

mAmA

lVINbVOUTls35VlVINbVOUTls10V

3VslVINbVOUTls10VlVINbVOUTle20VlVINbVOUTle30V

10Hzto10kHz

VOUTe10V󰀷fe120Hz

CADJe0mFCADJe10mFTO-3Package(KSTEEL)

mA

A

OutputNoise(%ofVOUT)RippleRejection

%(rms)

60771󰀟2163

150

1󰀟8190

dB

ThermalResistanceJunction-to-CaseThermalShutdownTemperature

󰀃C󰁋W󰀃C

2

ElectricalCharacteristicsLM333SpecificationswithstandardtypefaceareforTJe25󰀃C󰀷andthosewithboldfacetypeapplyoverthefulloperatingtemperaturerange󰀟(Note3)

ParameterReferenceVoltage

Conditions

ILe10mA

3VslVINbVOUTls35V10mAsILs3A󰀷PsPMAX

LineRegulationLoadRegulationThermalRegulationTemperatureStabilityLongTermStabilityAdjustPinCurrentAdjustPinCurrentChangeMinimumLoadCurrentCurrentLimit(Note5)

10mAsILs3A

3󰀟0VslVINbVOUTls35V3VslVINbVOUTls35VIOUTe50mA(Note4)10mAsILs3A󰀷PsPMAX(Notes4and5)10msPulseTMINsTJsTMAXTJe125󰀃C󰀷1000Hours

Typical

b1󰀟250b1󰀝250

Min(Note2)

b1󰀟225b1󰀝213

Max(Note2)

b1󰀟275b1󰀝287

Units

V%󰁋V%%󰁋W%%

0󰀟010󰀝020󰀟20󰀝40󰀟0020󰀝50󰀟265702󰀟52󰀝51󰀝53󰀝92󰀝40󰀝40󰀟003

3󰀟01󰀟00󰀟20

0󰀟040󰀝071󰀟01󰀝50󰀟02

951008105󰀝0

mAmA

lVINbVOUTls35VlVINbVOUTls10V

3VslVINbVOUTls10VlVINbVOUTle20VlVINbVOUTle30V

10Hzto10kHz

VOUTe10V󰀷fe120Hz

CADJe0mFCADJe10mFTO-3Package(KSTEEL)TO-220Package(T)

mA

A

OutputNoise(%ofVOUT)RippleRejection

%(rms)

60771󰀟23163

1󰀟84

dB

ThermalResistanceJunctiontoCaseThermalShutdownTemperatureThermalResistanceJunctiontoAmbient(NoHeatsink)

󰀃C󰁋W󰀃C

KPackageTPackage

3550

󰀃C󰁋W

Note1󰀌AbsoluteMaximumRatingsindicatelimitsbeyondwhichdamagetothedevicemayoccur󰀟Electricalspecificationsdonotapplywhenoperatingthedeviceoutsideofitsstatedoperatingconditions󰀟

Note2󰀌Alllimitsareguaranteedateitherroomtemperature(standardtypeface)orattemperatureextremes(boldtypeface)byproductiontestingorcorrelationtechniquesusingstandardStatisticalQualityControl(SQC)methods󰀟

Note3󰀌Unlessotherwisespecified󰀌lVINbVOUTle5V󰀷IOUTe0󰀟5A󰀷PDISSs30W󰀟

Note4󰀌Loadandlineregulationaremeasuredatconstantjunctiontemperature󰀷usinglowdutycyclepulsetesting(outputvoltagechangesduetoheatingeffectsarecoveredbytheThermalRegulationspecification)󰀟FortheTO-3package󰀷loadregulationismeasuredontheoutputpin󰀷󰀂󰀒󰀁󰀂belowthebaseofthepackage󰀟Note5󰀌TheoutputcurrentoftheLM333isguaranteedtobet3Aintherange3VslVINbVOUTls10V󰀟Fortherange10VslVINbVOUTls15V󰀷theguaranteedminimumoutputcurrentisequalto󰀌30󰁋(VINbVOUT)󰀟Refertographsforguaranteedoutputcurrentsatothervoltages󰀟

3

GuaranteedPerformanceCharacteristics

LM133GuaranteedOutputCurrent

LM333GuaranteedOutputCurrent

TL󰁋H󰁋9065–4TL󰁋H󰁋9065–5

TypicalApplications(Continued)

b5󰀟2VRegulatorwithElectronicShutdown

TL󰁋H󰁋9065–6

NegativeRegulatorwithProtectionDiodes

󰀁WhenCLislargerthan20mF󰀷D1protectstheLM133incasetheinputsupplyisshorted󰀟󰀁󰀁WhenC2islargerthan10mFandbVOUTislargerthanb25V󰀷D2protectstheLM133incasetheoutputisshorted󰀟󰀁󰀁󰀁IncaseVOUTisshortedtoapositivesupply󰀷D3protectstheLM133fromovervoltage󰀷andprotectstheloadfromreversedvoltage󰀟

TL󰁋H󰁋9065–7

4

TypicalApplications(Continued)

High-Performance9-AmpereAdjustableRegulator

󰀁WireR1andR4totheregulatorthatprovidesthehighestVOUTwitha3Aload󰀟

󰀁󰀁Fulloutputcurrentrequires5VslVIN–VOUTls10V󰀟Athigherin-put-outputvoltages󰀷loadcurrentwillbeless(seeguaranteedcurves)

TL󰁋H󰁋9065–8

CurrentRegulatorHighStability10VRegulator

VREF

IOUTe

R1

󰀁0󰀟4XsR1s120X

TL󰁋H󰁋9065–9

TL󰁋H󰁋9065–10

5

TypicalApplications(Continued)

High-CurrentAdjustableRegulator

󰀁Controlregulatormusthavethelarg-estVREF

󰀁󰀁Fulloutputcurrentrequires5VslVIN–VOUTls10V󰀟Athigherin-put-outputvoltages󰀷loadcurrentwillbeless(seeguaranteedcurves)

TL󰁋H󰁋9065–11

AdjustableLabVoltageRegulatorAdjustableCurrentRegulator

TL󰁋H󰁋9065–13

IOUTe

󰀣J

1󰀟5VR1

g15%adjustable

󰀁0󰀟5XsR1s24X

TL󰁋H󰁋9065–12

󰀁The10mFcapacitorsareoptionaltoimproveripplerejection󰀟

6

TypicalApplications(Continued)

THERMALREGULATION

WhenpowerisdissipatedinanIC󰀷atemperaturegradientoccursacrosstheICchipaffectingtheindividualICcircuitcomponents󰀟WithanICregulator󰀷thisgradientcanbees-peciallyseveresincethepowerdissipationislarge󰀟Thermalregulationistheeffectofthesetemperaturegradientsonoutputvoltage(inpercentageoutputchange)perwattofpowerchangeinaspecifiedtime󰀟Thermalregulationerrorisindependentofelectricalregulationortemperaturecoeffi-cient󰀷andoccurswithin5msto50msafterachangeinpowerdissipation󰀟ThermalregulationdependsonIClayoutaswellaselectricaldesign󰀟Thethermalregulationofavolt-ageregulatorisdefinedasthepercentagechangeofVOUT󰀷

perwatt󰀷withinthefirst10msafterastepofpowerisap-plied󰀟TheLM133’sspecificationis0󰀟01%󰁋W󰀷max󰀟

InFigure1󰀷atypicalLM133’soutputdriftsonly2mV(or0󰀟02%ofVOUTeb10V)whena20Wpulseisappliedfor10ms󰀟Thisperformanceisthuswellinsidethespecificationlimitof0󰀟01%󰁋Wc20We0󰀟2%max󰀟Whenthe20Wpulseisended󰀷thethermalregulationagainshowsa2mVstepastheLM133chipcoolsoff󰀟Notethattheloadregulationerrorofabout1mV(0󰀟01%)isadditionaltothethermalregulationerror󰀟InFigure2󰀷whenthe20Wpulseisappliedfor100ms󰀷theoutputdriftsonlyslightlybeyondthedriftinthefirst10ms󰀷andthethermalerrorstayswellwithin0󰀟1%(10mV)󰀟

TL󰁋H󰁋9065–14TL󰁋H󰁋9065–15

FIGURE1FIGURE2

PhysicalDimensionsinches(millimeters)

SteelTO-3MetalCanPackage(KSTEEL)OrderNumberLM133KSTEELorLM333KSTEEL

NSPackageNumberK02A

7

LM133󰁋LM3333-AmpereAdjustableNegativeRegulatorsPhysicalDimensionsinches(millimeters)(Continued)

3-LeadTO-220PlasticPackage(T)

OrderNumberLM333TNSPackageNumberT03B

Thisdatasheetcontainspreliminarylimitsanddesignspecifications󰀟Supplementalinformationwillbepublishedatalaterdate󰀟NationalSemiconductorreservestherighttomakechangesintheproduictscontainedinthisdocumentinordertoimprovedesignorperformanceandtosupplythebestpossibleproducts󰀟Nationalalsoassumesnoresponsiblityfortheuseofanycircuitsdescribedherein󰀷conveysnolicenseunderanypatentorotherright󰀷andmakesnorepresentationsthatthecircuitsarefreefrompatentinfringement󰀟Applicationsforanyintegratescircuitscontainedinthisdocumentareforillustra-tionpurposesonlyandNationalmakesnorepresentationorwarrantythatsuchapplicationswillbesuitablefortheusespecifiedwithoutfurthertestingormodification󰀟LIFESUPPORTPOLICY

NATIONAL’SPRODUCTSARENOTAUTHORIZEDFORUSEASCRITICALCOMPONENTSINLIFESUPPORTDEVICESORSYSTEMSWITHOUTTHEEXPRESSWRITTENAPPROVALOFTHEPRESIDENTOFNATIONALSEMICONDUCTORCORPORATION󰀟Asusedherein󰀌1󰀟Lifesupportdevicesorsystemsaredevicesorsystemswhich󰀷(a)areintendedforsurgicalimplantintothebody󰀷or(b)supportorsustainlife󰀷andwhosefailuretoperform󰀷whenproperlyusedinaccordancewithinstructionsforuseprovidedinthelabeling󰀷canbereasonablyexpectedtoresultinasignificantinjurytotheuser󰀟

NationalSemiconductorCorporation1111WestBardinRoad2󰀟Acriticalcomponentisanycomponentofalifesupportdeviceorsystemwhosefailuretoperformcanbereasonablyexpectedtocausethefailureofthelifesupportdeviceorsystem󰀷ortoaffectitssafetyoreffectiveness󰀟

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