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SemiconductorComponentsIndustries,LLC,2013September,2020Rev.
31PublicationOrderNumber:NCP605/DLDORegulator-LowIGND,CMOSwith/withoutEnableandwithEnhanced500mANCP605,NCP606TheNCP605/NCP606provideinexcessof500mAofoutputcurrentatfixedvoltageoptionsoranadjustableoutputvoltagefrom5.
0Vdownto1.
25V.
ThesedevicesaredesignedforspaceconstrainedandportablebatterypoweredapplicationsandofferadditionalfeaturessuchashighPSRR,lownoiseoperation,shortcircuitandthermalprotection.
ThedevicesaredesignedtobeusedwithlowcostceramiccapacitorsandarepackagedintheDFN63x3.
3.
NCP605isdesignedwithoutenablepin,NCP606isdesignedwithenablepin.
FeaturesOutputVoltageOptions:Adjustable,1.
5V,1.
8V,2.
5V,2.
8V,3.
0V,3.
3V,5.
0VAdjustableOutputbyExternalResistorsfrom5.
0Vdownto1.
25VCurrentLimit675mALowIGND(IndependentofLoad)$1.
5%OutputVoltageToleranceOverAllOperatingConditions(Adjustable)$2%OutputVoltageToleranceOverAllOperatingConditions(Fixed)NCP605FixedisDirectReplacementLP8345TypicalNoiseVoltageof50mVrmswithoutaBypassCapacitorEnhancedESDRatings:4kVHumanBodyMode(HBM)200VMachineModel(MM)ThesearePbFreeDevicesTypicalApplicationsHardDiskDriversNotebookComputersBatteryPowerElectronicsPortableInstrumentationFigure1.
NCP605TypicalApplicationCircuitforFixedVersion(1.
5V,1.
8V,2.
5V,2.
8V,3.
0V,3.
3V,5.
0V)NCP605(Fixed)VinVoutSENSEGNDVoutVinCinCoutDFN6,3x3.
3MNSUFFIXCASE506AXSeedetailedorderingandshippinginformationinthepackagedimensionssectiononpage12ofthisdatasheet.
ORDERINGINFORMATIONMARKINGDIAGRAMhttp://onsemi.
com1xxxxzzzAYWWGGxxxx=P605orP606zzz=ADJ,150,180,250,280,300,330,500A=AssemblyLocationY=YearWW=WorkWeekG=PbFreePackage(*Note:Microdotmaybeineitherlocation)123654GNDNCSENSE/ADJ123654GNDENSENSE/ADJGNDGNDNCP605PINCONNECTIONSDFN63x3.
3mmNCP606PINCONNECTIONSDFN63x3.
3mm(TOPVIEW)(TOPVIEW)VinVinVoutVinVinVoutNCP605,NCP606http://onsemi.
com2Figure2.
NCP606TypicalApplicationCircuitforFixedVersion(1.
5V,1.
8V,2.
5V,2.
8V,3.
0V,3.
3V,5.
0V)NCP606(Fixed)VinVoutSENSEGNDVoutVinCinCoutENFigure3.
NCP605TypicalApplicationCircuitforAdjustableVersion(1.
25V0V)NCP605(Adjustable)VinVoutADJGNDVoutVinCinCoutNCP606(Adjustable)VinVoutADJGNDVoutVinCinCoutFigure4.
NCP606TypicalApplicationCircuitforAdjustableVersion(1.
25V0V)ENFigure5.
NCP605TypicalApplicationCircuitforAdjustableVersion(Vout=1.
25V)NCP605(Adjustable)VinVoutADJGNDVoutCinCoutFigure6.
NCP606TypicalApplicationCircuitforAdjustableVersion(Vout=1.
25V)NCP606(Adjustable)VinVoutADJGNDVoutCinCoutENVinVinR1R2R1R2Figure7.
NCP605SimplifiedBlockDiagramFigure8.
NCP606SimplifiedBlockDiagram+DriverwithCurrentLimitThermalShutdownVrefGNDSENSE/ADJFixedVersionOnlyAdjustableVersionOnly+DriverwithCurrentLimitThermalShutdownVrefGNDSENSE/ADJFixedVersionOnlyAdjustableVersionOnlyENVinVoutVinVoutNCP605,NCP606http://onsemi.
com3PINFUNCTIONDESCRIPTIONPinNo.
PinNameDescription1VinPositivePowerSupplyInput*2GNDPowerSupplyGround3NC/ENNCP605:ThisPinisNotConnectedNCP606:ThisPinisEnableInput,ActiveHIGH4VoutRegulatedOutputVoltage5SENSE/ADJOutputVoltageSenseInputFixedVersion:ConnectDirectlytoOutputCapacitorAdjustableVersion:ConnecttoMiddlePointofExternalResistorDivider6VinPositivePowerSupplyInput*EPADGNDExposedPadisConnectedtoGround*Pins1and6mustbeconnectedtogetherexternallyforoutputcurrentfullrangeoperationABSOLUTEMAXIMUMRATINGSRatingSymbolValueUnitInputVoltageRange(Note1)Vin0.
3to6.
5VChipEnableVoltageRange(NCP606only)VEN0.
3to6.
5VOutputVoltageRangeVout0.
3to6.
5VOutputVoltage/SenseInputRange,SENSE/ADJVADJ0.
3to6.
5VESDCapabilityHumanBodyModelMachineModelESD4000200VMaximumJunctionTemperatureTJ(MAX)150°CStorageTemperatureRangeTSTG65to150°CStressesexceedingMaximumRatingsmaydamagethedevice.
MaximumRatingsarestressratingsonly.
FunctionaloperationabovetheRecommendedOperatingConditionsisnotimplied.
ExtendedexposuretostressesabovetheRecommendedOperatingConditionsmayaffectdevicereliability.
NOTE:ThisdeviceseriescontainsESDProtectionandexceedsthefollowingtests:ESDHumanBodyModeltestedperAECQ100002(EIA/JESD22A114)ESDMachineModeltestedperAEC150mAperJEDECstandard:JESD78Q100003(EIA/JESD22A115)LatchupCurrentMaximumRating:v150mAperJEDECstandard:JESD78.
1.
MinimumVin=(Vout+VDO)or1.
5V,whicheverishigher.
THERMALCHARACTERISTICSRatingSymbolValueUnitThermalResistance,JunctiontoAmbient(Note2)RqJA75°C/WThermalResistance,JunctiontoCaseRYJC18°C/W2.
Solderedon645mm2,1ozcopperarea,FR4.
RefertoELECTRICALCHARACTERISTICSandAPPLICATIONINFORMATIONforSafeOperatingArea.
OPERATINGRANGES(Note3)RatingSymbolValueUnitInputVoltage(Note4)Vin1.
5to6.
0VOutputCurrent(Notes5and6)Iout0to675mAJunctionTemperatureTJ40to150°CAmbientTemperatureTA40to125°C3.
RefertoElectricalCharacteristicsandApplicationInformationforSafeOperatingArea.
4.
MinimumVin=(Vout+VDO)or1.
5V,whicheverishigher.
5.
Minimumlimitvalidforfixedversionsonly.
FormoredetailsrefertoApplicationInformationSection.
6.
MaximumlimitforVout=Vout(nom)10%.
NCP605,NCP606http://onsemi.
com4ELECTRICALCHARACTERISTICSVin=(Vout+0.
5V)or1.
5V,whicheverishigher,Cin=1mF,Cout=1mF,fortypicalvaluesTA=25°C,formin/maxvaluesTA=40°Cto85°C;unlessotherwisenoted.
(Notes9and10)ParameterTestConditionsSymbolMinTypMaxUnitOutputvoltage(AdjustableVersion)Vin=1.
75Vto6VIout=1mAto500mAVout1.
231(1.
5%)1.
2501.
269(+1.
5%)VOutputvoltage(FixedVersions)1.
5V1.
8V2.
5V2.
8V3.
0V3.
3V5.
0VVin=(Vout+0.
5V)to6VIout=1mAto500mAVout1.
4701.
7642.
4502.
7442.
9403.
2344.
900(2%)1.
51.
82.
52.
83.
03.
35.
01.
5301.
8362.
5502.
8563.
0603.
3665.
100(+2%)VLineregulationVin=(Vout+0.
5V)to6V,Iout=1mARegline410mVLoadregulationIout=1mAto500mARegload1030mVDropoutvoltage(AdjustableVersion)(Note9)VDO=VinVoutVout=1.
25VIout=500mAVDO450470mVDropoutvoltage(FixedVersion)1.
5V1.
8V2.
5V2.
8V3.
0V3.
3V5.
0VVDO=Vin(Vout0.
1V)Iout=500mAVout=0Vto90%Vout(nom)VDO290250200190180170150360300250240230220200mVDisableCurrent(NCP606Only)(Note10)VEN=0VIDIS0.
11mAGroundCurrentIout=1mAto500mAIGND145180mACurrentLimit(Note11)Vout=Vout(nom)10%ILIM675mAOutputShortCircuitCurrentVout=0VISC70010001350mAEnableInputThresholdVoltage(NCP606Only)VoltageIncreasing,LogicHighVoltageDecreasing,LogicLowHighLowVth(EN)0.
90.
4VTurnonTime(Note11)1.
25V1.
5V1.
8V2.
5V2.
8V3.
0V3.
3V5.
0VVin=0Vto(Vout+0.
5V)or1.
75V,whicheverishigherVout=0Vto90%ofVout(nom)ton667810121530msEnableTime(NCP606Only)(Note11)1.
25V1.
5V1.
8V2.
5V2.
8V3.
0V3.
3V5.
0VVEN=From0VtoVintEN1212131618192030ms7.
RefertoABSOLUTEMAXIMUMRATINGSandAPPLICATIONINFORMATIONforSafeOperatingArea.
8.
Performanceguaranteedovertheindicatedoperatingtemperaturerangebydesignand/orcharacterizationtestedatTJ=TA=25°C.
Lowdutycyclepulsetechniquesareusedduringtestingtomaintainthejunctiontemperatureasclosetoambientaspossible.
9.
MaximumdropoutvoltageislimitedtominimuminputvoltageVin=1.
7Vrecommendedforguaranteedoperationatmaximumoutputcurrent.
10.
Refertoapplicationinformationsection.
11.
Valuesbasedondesignand/orcharacterization.
NCP605,NCP606http://onsemi.
com5ELECTRICALCHARACTERISTICSVin=(Vout+0.
5V)or1.
5V,whicheverishigher,Cin=1mF,Cout=1mF,fortypicalvaluesTA=25°C,formin/maxvaluesTA=40°Cto85°C;unlessotherwisenoted.
(Notes9and10)ParameterUnitMaxTypMinSymbolTestConditionsPowerSupplyRippleRejection(Note11)Iout=500mAVout=1.
25VVinVout=1Vf=120Hz,0.
5VPPf=1kHz,0.
5VPPf=10kHz,0.
5VPPPSRR625540dBOutputNoiseVoltage(Note11)f=10Hzto100kHz,Vout=1.
25VVn50mVrmsThermalShutdownTemperature(Note11)TSD175°CThermalShutdownHysteresis(Note11)TSH10°C7.
RefertoABSOLUTEMAXIMUMRATINGSandAPPLICATIONINFORMATIONforSafeOperatingArea.
8.
Performanceguaranteedovertheindicatedoperatingtemperaturerangebydesignand/orcharacterizationtestedatTJ=TA=25°C.
Lowdutycyclepulsetechniquesareusedduringtestingtomaintainthejunctiontemperatureasclosetoambientaspossible.
9.
MaximumdropoutvoltageislimitedtominimuminputvoltageVin=1.
7Vrecommendedforguaranteedoperationatmaximumoutputcurrent.
10.
Refertoapplicationinformationsection.
11.
Valuesbasedondesignand/orcharacterization.
NCP605,NCP606http://onsemi.
com6TYPICALCHARACTERISTICSFigure9.
OutputVoltagevs.
Temperature(Vout=1.
25V)1.
2311.
23481.
23861.
24241.
24621.
251.
25381.
25761.
26141.
26521.
2694020020406080100TA,AMBIENTTEMPERATURE(°C)Vout,OUTPUTVOLTAGE(V)Vin=Vout+0.
5V=1.
75VVin=6.
0VVout=1.
25VFigure10.
OutputVoltagevs.
Temperature(Vout=2.
5V)2.
452.
462.
472.
482.
492.
52.
512.
522.
532.
542.
554020020406080100TA,AMBIENTTEMPERATURE(°C)Vout,OUTPUTVOLTAGE(V)Vin=Vout+0.
5V=3.
0VVin=6.
0VVout=2.
5VFigure11.
OutputVoltagevs.
Temperature(Vout=5.
0V)4.
94.
924.
944.
964.
9855.
025.
045.
065.
085.
14020020406080100Vout,OUTPUTVOLTAGE(V)TA,AMBIENTTEMPERATURE(°C)Vin=6.
0VVin=Vout+0.
5V=5.
5VFigure12.
DropoutVoltagevs.
Temperature(Vout=2.
5V)03060901201501802102402703004020020406080100VDO,DROPOUTVOLTAGE(mV)TA,AMBIENTTEMPERATURE(°C)Iout=500mAIout=300mAIout=150mAFigure13.
DropoutVoltagevs.
Temperature(Vout=5.
0V)0204060801001201401601802004020020406080100TA,AMBIENTTEMPERATURE(°C)VDO,DROPOUTVOLTAGE(mV)Iout=150mAIout=300mAIout=500mAFigure14.
GroundCurrentvs.
Temperature8090100110120130140150160170180402002040608010TA,AMBIENTTEMPERATURE(°C)IGND,GROUNDCURRENT(mA)Vout=5.
0VVout=2.
5VVout=1.
25VVin=Vout+0.
5VIout=500mAVout=5.
0VVout=2.
5VVout=5.
0VNCP605,NCP606http://onsemi.
com7TYPICALCHARACTERISTICSFigure15.
ShortCircuitCurrentLimitvs.
Temperature(Vout=1.
25V)8008408809209601000104010801120116012004020020406080100TA,AMBIENTTEMPERATURE(°C)ISC,SHORTCIRCUITCURRENTLIM-IT(mA)Vin=1.
75VVin=6.
0VFigure16.
PSRRvs.
Frequency(Vout=1.
25V)f,FREQUENCY(Hz)PSRR(dB)Vout=1.
25VVin=2.
25VCout=1.
0mFTA=25°CIout=500mAIout=1mAFigure17.
PSRRvs.
Frequency(Vout=2.
5V)10100100010000100000PSRR(dB)f,FREQUENCY(Hz)Vout=2.
5VVin=3.
5VCout=1.
0mFTA=25°CIout=500mAIout=1mAFigure18.
NoiseDensityvs.
Frequency(Vout=1.
25V)0200400600800100012001400160010100100010000100000f,FREQUENCY(Hz)Vn,NOISEDENSITY(nV/√/HZ)Vin=Vout+0.
5V=1.
75VCin=Cout=1.
0mFIout=500mATA=25°CVn=47mVrmsFigure19.
NoiseDensityvs.
Frequency(Vout=2.
5V)0500100015002000250010100100010000100000f,FREQUENCY(Hz)Vn,NOISEDENSITY(nV/√/HZ)Vin=Vout+0.
5V=3.
0VCin=Cout=1.
0mFIout=500mATA=25°CVn=70mVrmsFigure20.
LoadTransient(Vout=2.
5V)TIME(40ms/div)Vout200mV/divIout500mA/divVin=3.
0VVout=2.
5VCout=10mFtrise=tfall=1msTA=25°CVout=1.
25V010203040506070801010010001000010000001020304050607080NCP605,NCP606http://onsemi.
com8TYPICALCHARACTERISTICSFigure21.
LineTransient(Vout=2.
5V)TIME(20ms/div)Vin=2.
5VIout=500mACout=10mFtrise=tfall=1msTA=25°CVout100mV/divVin500mV/div4.
0V3.
0VFigure22.
StartupTransient(Vout=2.
5V)TIME(10ms/div)Vout1V/divVin1V/divVout=2.
5VIout=0mACout=10mFVin=3.
0Vtrise=1msTA=25°CNCP605,NCP606http://onsemi.
com9DEFINITIONSGeneralAllmeasurementsareperformedusingshortpulselowdutycycletechniquestomaintainjunctiontemperatureascloseaspossibletoambienttemperature.
LineRegulationThechangeinoutputvoltageforachangeininputvoltage.
Themeasurementismadeunderconditionsoflowdissipationorbyusingpulsetechniquessuchthattheaveragejunctiontemperatureisnotsignificantlyaffected.
LoadRegulationThechangeinoutputvoltageforachangeinoutputloadcurrentataconstanttemperature.
DropoutVoltageTheinputtooutputdifferentialatwhichtheregulatoroutputnolongermaintainsregulationagainstfurtherreductionsininputvoltage.
Measuredwhentheoutputdrops100mVbelowitsnominalvalue.
Thejunctiontemperature,loadcurrent,andminimuminputsupplyrequirementsaffectthedropoutlevel.
GroundandDisableCurrentsGroundCurrentisthecurrentthatflowsthroughthegroundpinwhentheregulatoroperateswithoutaloadonitsoutput(IGND).
ThisconsistsofinternalICoperation,bias,etc.
Itisactuallythedifferencebetweentheinputcurrent(measuredthroughtheLDOinputpin)andtheoutputloadcurrent.
Iftheregulatorhasaninputpinthatreducesitsinternalbiasandshutsofftheoutput(enable/disablefunction),thistermiscalledthedisablecurrent(IDIS).
CurrentLimitandShortCircuitCurrentLimitCurrentLimitisvalueofoutputcurrentbywhichoutputvoltagedropsby10%withrespecttoitsnominalvalue.
ShortCircuitCurrentLimitisoutputcurrentvaluemeasuredwithoutputoftheregulatorshortedtoground.
PSRRPowerSupplyRejectionRatioisdefinedasratioofoutputvoltageandinputvoltageripple.
Itismeasuredindecibels(dB).
OutputNoiseVoltageThisistheintegratedvalueoftheoutputnoiseoveraspecifiedfrequencyrange.
Inputvoltageandoutputloadcurrentarekeptconstantduringthemeasurement.
ResultsareexpressedinmVrmsornV/√Hz.
TurnonandTurnoffTimesTurnonTimeistimedifferencemeasuredduringpowerupofthedevicefromthemomentwheninputvoltagereaches90%ofitsoperatingvaluetothemomentwhenoutputvoltagereaches90%ofitsnominalvalueatspecificoutputcurrentorresistiveload.
TurnoffTimeistimedifferencemeasuredduringpowerdownofthedevicefromthemomentwheninputvoltagedropsto10%ofitsoperatingvaluetothemomentwhenoutputvoltagedropsto10%ofitsnominalvalueatspecificoutputcurrentorresistiveload.
EnableandDisableTimesEnableTimeistimedifferencemeasuredduringpowerupofthedevicefromthemomentwhenenablevoltagereaches90%ofinputvoltageoperatingvaluetothemomentwhenoutputvoltagereaches90%ofitsnominalvalueatspecificoutputcurrentorresistiveload.
DisableTimeistimedifferencemeasuredduringpowerdownofthedevicefromthemomentwhenenablevoltagedropsto10%ofinputvoltageoperatingvaluetothemomentwhenoutputvoltagedropsto10%ofitsnominalvalueatspecificoutputcurrentorresistiveload.
LineTransientResponseTypicaloutputvoltageovershootandundershootresponsewhentheinputvoltageisexcitedwithagivenslope.
LoadTransientResponseTypicaloutputvoltageovershootandundershootresponsewhentheoutputcurrentisexcitedwithagivenslopebetweennoloadandfullloadconditions.
ThermalProtectionInternalthermalshutdowncircuitryisprovidedtoprotecttheintegratedcircuitintheeventthatthemaximumjunctiontemperatureisexceeded.
Whenactivatedattypically175°C,theregulatorturnsoff.
Thisfeatureisprovidedtopreventfailuresfromaccidentaloverheating.
MaximumPackagePowerDissipationThepowerdissipationlevelatwhichthejunctiontemperaturereachesitsmaximumoperatingvalue.
NCP605,NCP606http://onsemi.
com10APPLICATIONSINFORMATIONTheNCP605/NCP606regulatorisself*protectedwithinternalthermalshutdownandinternalcurrentlimit.
TypicalapplicationcircuitsareshowninFigures1to4.
InputDecoupling(Cin)Aceramicortantalum1.
0mFcapacitorisrecommendedandshouldbeconnectedclosetotheNCP605/NCP606package.
HighercapacitanceandlowerESRwillimprovetheoveralllinetransientresponse.
OutputDecoupling(Cout)TheNCP605/NCP606isastablecomponentanddoesnotrequireaminimumEquivalentSeriesResistance(ESR)fortheoutputcapacitor.
Theminimumoutputdecouplingvalueis1.
0mFandcanbeaugmentedtofulfillstringentloadtransientrequirements.
Theregulatorworkswithceramicchipcapacitorsaswellastantalumdevices.
Largervaluesimprovenoiserejectionandloadregulationtransientresponse.
TypicalcharacteristicsweremeasuredwithMurataceramiccapacitors.
GRM219R71E105K(1mF,25V,X7R,0805)andGRM21BR71A106K(10mF,10V,X7R,0805).
NoLoadRegulationConsiderationsTheNCP605/NCP606adjustableregulatorwilloperateproperlyunderconditionswheretheonlyloadcurrentisthroughtheresistordividerthatsetstheoutputvoltage.
However,inthecasewheretheNCP605/NCP606isconfiguredtoprovidea1.
250Voutput,thereisnoresistordivider.
Ifthepartisenabledundernoloadconditions,leakagecurrentthroughthepasstransistoratjunctiontemperaturesabove85°Ccanapproachseveralmicroamps,especiallyasjunctiontemperatureapproaches150°C.
Ifthisleakagecurrentisnotdirectedintoaload,theoutputvoltagewillriseuptoalevelapproximately20mVabovenominal.
TheNCP605/NCP606containsanovershootclampcircuittoimprovetransientresponseduringaloadcurrentsteprelease.
Whenoutputvoltageexceedsthenominalbyapproximately20mV,thiscircuitbecomesactiveandclampstheoutputfromfurthervoltageincrease.
TyingtheENABLEpintoVin(NCP606only)willensurethatthepartisactivewheneverthesupplyvoltageispresent,thusguaranteeingthattheclampcircuitisactivewheneverleakagecurrentispresent.
WhentheNCP606adjustableregulatorisdisabled,theovershootclampcircuitbecomesinactiveandthepasstransistorleakagewillchargeanycapacitanceonVout.
Ifnoloadispresent,theoutputcanchargeuptowithinafewmillivoltsofVin.
Inmostapplications,theloadwillpresentsomeimpedancetoVoutsuchthattheoutputvoltagewillbeinherentlyclampedatasafelevel.
Aminimumloadof10mAisrecommended.
UnlikeLP8345,forNCP605/606fixedvoltageversionsthereisnolimitationforminimumloadcurrent.
NoiseDecouplingTheNCP605/NCP606isalownoiseregulatorandneedsnoexternalnoisereductioncapacitor.
Unlikeotherlownoiseregulatorswhichrequireanexternalcapacitorandhaveslowstartuptimes,theNCP605/NCP606operateswithoutanoisereductioncapacitor,hasatypical8msturnontimeandachievesa50mVrmsoverallnoiselevelbetween10Hzand100kHz.
EnableOperation(NCP606Only)Theenablepinwillturntheregulatoronoroff.
Thethresholdlimitsarecoveredintheelectricalcharacteristicstableinthisdatasheet.
Theturnon/turnofftransientvoltagebeingsuppliedtotheenablepinshouldexceedaslewrateof10mV/mstoensurecorrectoperation.
IftheenablefunctionisnottobeusedthenthepinshouldbeconnectedtoVin.
OutputVoltageAdjustTheoutputvoltagecanbeadjustedfrom1times(Figure4)to4times(Figure3)thetypical1.
250VregulationvoltageviatheuseofresistorsbetweentheoutputandtheADJinput.
TheoutputvoltageandresistorsarechosenusingEquation1andEquation2.
Vout+1.
250ǒ1)R1R2)ǒIADJR1(eq.
1)(eq.
2)R2^R1Vout1.
25*1InputbiascurrentIADJistypicallylessthan150nA.
ChooseR1arbitrarilytominimizeerrorsduetothebiascurrentandtominimizenoisecontributiontotheoutputvoltage.
UseEquation2tofindtherequiredvalueforR2.
ThermalAspowerintheNCP605/NCP606increases,itmightbecomenecessarytoprovidesomethermalrelief.
Themaximumpowerdissipationsupportedbythedeviceisdependentuponboarddesignandlayout.
MountingpadconfigurationonthePCB,theboardmaterial,andtheambienttemperatureaffecttherateofjunctiontemperatureriseforthepart.
WhentheNCP605/NCP606hasgoodthermalconductivitythroughthePCB,thejunctiontemperaturewillberelativelylowwithhighpowerapplications.
ThemaximumdissipationtheNCP605/NCP606canhandleisgivenby:PD(MAX)+TJ(MAX)*TARQJA(eq.
3)SinceTJisnotrecommendedtoexceed125°C(TJ(MAX)),thentheNCP605/NCP606solderedon645mm2,1ozcopperarea,FR4candissipateupto1.
3WwhentheambientNCP605,NCP606http://onsemi.
com11temperature(TA)is25°C.
SeeFigure23forRqJAversusPCBarea.
ThepowerdissipatedbytheNCP605/NCP606canbecalculatedfromthefollowingequations:PD[VinǒIGND@IOUT)IoutǒVin*Vout(eq.
4)orVin(MAX)[PD(MAX))ǒVoutIoutIout)IGND(eq.
5)0501001502002500200400600800Figure23.
ThermalResistancevs.
CopperAreaCOPPERAREA(mm2)RqJA,(°C/W)FR4=1.
0ozFR4=2.
0ozHintsVinandGNDprintedcircuitboardtracesshouldbeaswideaspossible.
Whentheimpedanceofthesetracesishigh,thereisachancetopickupnoiseorcausetheregulatortomalfunction.
Placeexternalcomponents,especiallytheoutputcapacitor,ascloseaspossibletotheNCP605/NCP606,andmaketracesasshortaspossible.
NCP605,NCP606http://onsemi.
com12ORDERINGINFORMATIONDeviceNominalOutputVoltage(V)MarkingPackageShippingNCP605MNADJT2GADJP605ADJDFN6(PbFree)3000/Tape&ReelNCP605MN15T2G1.
5P605150DFN6(PbFree)3000/Tape&ReelNCP605MN18T2G1.
8P605180DFN6(PbFree)3000/Tape&ReelNCP605MN25T2G2.
5P605250DFN6(PbFree)3000/Tape&ReelNCP605MN28T2G2.
8P605280DFN6(PbFree)3000/Tape&ReelNCP605MN30T2G3.
0P605300DFN6(PbFree)3000/Tape&ReelNCP605MN33T2G3.
3P605330DFN6(PbFree)3000/Tape&ReelNCP605MN50T2G5.
0P605500DFN6(PbFree)3000/Tape&ReelNCP606MNADJT2GADJP606ADJDFN6(PbFree)3000/Tape&ReelNCP606MN15T2G1.
5P606150DFN6(PbFree)3000/Tape&ReelNCP606MN18T2G1.
8P606180DFN6(PbFree)3000/Tape&ReelNCP606MN25T2G2.
5P606250DFN6(PbFree)3000/Tape&ReelNCP606MN28T2G2.
8P606280DFN6(PbFree)3000/Tape&ReelNCP606MN30T2G3.
0P606300DFN6(PbFree)3000/Tape&ReelNCP606MN33T2G3.
3P606330DFN6(PbFree)3000/Tape&ReelNCP606MN50T2G5.
0P606500DFN6(PbFree)3000/Tape&ReelForinformationontapeandreelspecifications,includingpartorientationandtapesizes,pleaserefertoourTapeandReelPackagingSpecificationsBrochure,BRD8011/D.
NCP605,NCP606http://onsemi.
com13PACKAGEDIMENSIONSDFN63.
0x3.
3,0.
95PCASE506AXISSUEAONSemiconductorandaretrademarksofSemiconductorComponentsIndustries,LLCdbaONSemiconductororitssubsidiariesintheUnitedStatesand/orothercountries.
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31PublicationOrderNumber:NCP605/DLDORegulator-LowIGND,CMOSwith/withoutEnableandwithEnhanced500mANCP605,NCP606TheNCP605/NCP606provideinexcessof500mAofoutputcurrentatfixedvoltageoptionsoranadjustableoutputvoltagefrom5.
0Vdownto1.
25V.
ThesedevicesaredesignedforspaceconstrainedandportablebatterypoweredapplicationsandofferadditionalfeaturessuchashighPSRR,lownoiseoperation,shortcircuitandthermalprotection.
ThedevicesaredesignedtobeusedwithlowcostceramiccapacitorsandarepackagedintheDFN63x3.
3.
NCP605isdesignedwithoutenablepin,NCP606isdesignedwithenablepin.
FeaturesOutputVoltageOptions:Adjustable,1.
5V,1.
8V,2.
5V,2.
8V,3.
0V,3.
3V,5.
0VAdjustableOutputbyExternalResistorsfrom5.
0Vdownto1.
25VCurrentLimit675mALowIGND(IndependentofLoad)$1.
5%OutputVoltageToleranceOverAllOperatingConditions(Adjustable)$2%OutputVoltageToleranceOverAllOperatingConditions(Fixed)NCP605FixedisDirectReplacementLP8345TypicalNoiseVoltageof50mVrmswithoutaBypassCapacitorEnhancedESDRatings:4kVHumanBodyMode(HBM)200VMachineModel(MM)ThesearePbFreeDevicesTypicalApplicationsHardDiskDriversNotebookComputersBatteryPowerElectronicsPortableInstrumentationFigure1.
NCP605TypicalApplicationCircuitforFixedVersion(1.
5V,1.
8V,2.
5V,2.
8V,3.
0V,3.
3V,5.
0V)NCP605(Fixed)VinVoutSENSEGNDVoutVinCinCoutDFN6,3x3.
3MNSUFFIXCASE506AXSeedetailedorderingandshippinginformationinthepackagedimensionssectiononpage12ofthisdatasheet.
ORDERINGINFORMATIONMARKINGDIAGRAMhttp://onsemi.
com1xxxxzzzAYWWGGxxxx=P605orP606zzz=ADJ,150,180,250,280,300,330,500A=AssemblyLocationY=YearWW=WorkWeekG=PbFreePackage(*Note:Microdotmaybeineitherlocation)123654GNDNCSENSE/ADJ123654GNDENSENSE/ADJGNDGNDNCP605PINCONNECTIONSDFN63x3.
3mmNCP606PINCONNECTIONSDFN63x3.
3mm(TOPVIEW)(TOPVIEW)VinVinVoutVinVinVoutNCP605,NCP606http://onsemi.
com2Figure2.
NCP606TypicalApplicationCircuitforFixedVersion(1.
5V,1.
8V,2.
5V,2.
8V,3.
0V,3.
3V,5.
0V)NCP606(Fixed)VinVoutSENSEGNDVoutVinCinCoutENFigure3.
NCP605TypicalApplicationCircuitforAdjustableVersion(1.
25V
NCP606TypicalApplicationCircuitforAdjustableVersion(1.
25V
NCP605TypicalApplicationCircuitforAdjustableVersion(Vout=1.
25V)NCP605(Adjustable)VinVoutADJGNDVoutCinCoutFigure6.
NCP606TypicalApplicationCircuitforAdjustableVersion(Vout=1.
25V)NCP606(Adjustable)VinVoutADJGNDVoutCinCoutENVinVinR1R2R1R2Figure7.
NCP605SimplifiedBlockDiagramFigure8.
NCP606SimplifiedBlockDiagram+DriverwithCurrentLimitThermalShutdownVrefGNDSENSE/ADJFixedVersionOnlyAdjustableVersionOnly+DriverwithCurrentLimitThermalShutdownVrefGNDSENSE/ADJFixedVersionOnlyAdjustableVersionOnlyENVinVoutVinVoutNCP605,NCP606http://onsemi.
com3PINFUNCTIONDESCRIPTIONPinNo.
PinNameDescription1VinPositivePowerSupplyInput*2GNDPowerSupplyGround3NC/ENNCP605:ThisPinisNotConnectedNCP606:ThisPinisEnableInput,ActiveHIGH4VoutRegulatedOutputVoltage5SENSE/ADJOutputVoltageSenseInputFixedVersion:ConnectDirectlytoOutputCapacitorAdjustableVersion:ConnecttoMiddlePointofExternalResistorDivider6VinPositivePowerSupplyInput*EPADGNDExposedPadisConnectedtoGround*Pins1and6mustbeconnectedtogetherexternallyforoutputcurrentfullrangeoperationABSOLUTEMAXIMUMRATINGSRatingSymbolValueUnitInputVoltageRange(Note1)Vin0.
3to6.
5VChipEnableVoltageRange(NCP606only)VEN0.
3to6.
5VOutputVoltageRangeVout0.
3to6.
5VOutputVoltage/SenseInputRange,SENSE/ADJVADJ0.
3to6.
5VESDCapabilityHumanBodyModelMachineModelESD4000200VMaximumJunctionTemperatureTJ(MAX)150°CStorageTemperatureRangeTSTG65to150°CStressesexceedingMaximumRatingsmaydamagethedevice.
MaximumRatingsarestressratingsonly.
FunctionaloperationabovetheRecommendedOperatingConditionsisnotimplied.
ExtendedexposuretostressesabovetheRecommendedOperatingConditionsmayaffectdevicereliability.
NOTE:ThisdeviceseriescontainsESDProtectionandexceedsthefollowingtests:ESDHumanBodyModeltestedperAECQ100002(EIA/JESD22A114)ESDMachineModeltestedperAEC150mAperJEDECstandard:JESD78Q100003(EIA/JESD22A115)LatchupCurrentMaximumRating:v150mAperJEDECstandard:JESD78.
1.
MinimumVin=(Vout+VDO)or1.
5V,whicheverishigher.
THERMALCHARACTERISTICSRatingSymbolValueUnitThermalResistance,JunctiontoAmbient(Note2)RqJA75°C/WThermalResistance,JunctiontoCaseRYJC18°C/W2.
Solderedon645mm2,1ozcopperarea,FR4.
RefertoELECTRICALCHARACTERISTICSandAPPLICATIONINFORMATIONforSafeOperatingArea.
OPERATINGRANGES(Note3)RatingSymbolValueUnitInputVoltage(Note4)Vin1.
5to6.
0VOutputCurrent(Notes5and6)Iout0to675mAJunctionTemperatureTJ40to150°CAmbientTemperatureTA40to125°C3.
RefertoElectricalCharacteristicsandApplicationInformationforSafeOperatingArea.
4.
MinimumVin=(Vout+VDO)or1.
5V,whicheverishigher.
5.
Minimumlimitvalidforfixedversionsonly.
FormoredetailsrefertoApplicationInformationSection.
6.
MaximumlimitforVout=Vout(nom)10%.
NCP605,NCP606http://onsemi.
com4ELECTRICALCHARACTERISTICSVin=(Vout+0.
5V)or1.
5V,whicheverishigher,Cin=1mF,Cout=1mF,fortypicalvaluesTA=25°C,formin/maxvaluesTA=40°Cto85°C;unlessotherwisenoted.
(Notes9and10)ParameterTestConditionsSymbolMinTypMaxUnitOutputvoltage(AdjustableVersion)Vin=1.
75Vto6VIout=1mAto500mAVout1.
231(1.
5%)1.
2501.
269(+1.
5%)VOutputvoltage(FixedVersions)1.
5V1.
8V2.
5V2.
8V3.
0V3.
3V5.
0VVin=(Vout+0.
5V)to6VIout=1mAto500mAVout1.
4701.
7642.
4502.
7442.
9403.
2344.
900(2%)1.
51.
82.
52.
83.
03.
35.
01.
5301.
8362.
5502.
8563.
0603.
3665.
100(+2%)VLineregulationVin=(Vout+0.
5V)to6V,Iout=1mARegline410mVLoadregulationIout=1mAto500mARegload1030mVDropoutvoltage(AdjustableVersion)(Note9)VDO=VinVoutVout=1.
25VIout=500mAVDO450470mVDropoutvoltage(FixedVersion)1.
5V1.
8V2.
5V2.
8V3.
0V3.
3V5.
0VVDO=Vin(Vout0.
1V)Iout=500mAVout=0Vto90%Vout(nom)VDO290250200190180170150360300250240230220200mVDisableCurrent(NCP606Only)(Note10)VEN=0VIDIS0.
11mAGroundCurrentIout=1mAto500mAIGND145180mACurrentLimit(Note11)Vout=Vout(nom)10%ILIM675mAOutputShortCircuitCurrentVout=0VISC70010001350mAEnableInputThresholdVoltage(NCP606Only)VoltageIncreasing,LogicHighVoltageDecreasing,LogicLowHighLowVth(EN)0.
90.
4VTurnonTime(Note11)1.
25V1.
5V1.
8V2.
5V2.
8V3.
0V3.
3V5.
0VVin=0Vto(Vout+0.
5V)or1.
75V,whicheverishigherVout=0Vto90%ofVout(nom)ton667810121530msEnableTime(NCP606Only)(Note11)1.
25V1.
5V1.
8V2.
5V2.
8V3.
0V3.
3V5.
0VVEN=From0VtoVintEN1212131618192030ms7.
RefertoABSOLUTEMAXIMUMRATINGSandAPPLICATIONINFORMATIONforSafeOperatingArea.
8.
Performanceguaranteedovertheindicatedoperatingtemperaturerangebydesignand/orcharacterizationtestedatTJ=TA=25°C.
Lowdutycyclepulsetechniquesareusedduringtestingtomaintainthejunctiontemperatureasclosetoambientaspossible.
9.
MaximumdropoutvoltageislimitedtominimuminputvoltageVin=1.
7Vrecommendedforguaranteedoperationatmaximumoutputcurrent.
10.
Refertoapplicationinformationsection.
11.
Valuesbasedondesignand/orcharacterization.
NCP605,NCP606http://onsemi.
com5ELECTRICALCHARACTERISTICSVin=(Vout+0.
5V)or1.
5V,whicheverishigher,Cin=1mF,Cout=1mF,fortypicalvaluesTA=25°C,formin/maxvaluesTA=40°Cto85°C;unlessotherwisenoted.
(Notes9and10)ParameterUnitMaxTypMinSymbolTestConditionsPowerSupplyRippleRejection(Note11)Iout=500mAVout=1.
25VVinVout=1Vf=120Hz,0.
5VPPf=1kHz,0.
5VPPf=10kHz,0.
5VPPPSRR625540dBOutputNoiseVoltage(Note11)f=10Hzto100kHz,Vout=1.
25VVn50mVrmsThermalShutdownTemperature(Note11)TSD175°CThermalShutdownHysteresis(Note11)TSH10°C7.
RefertoABSOLUTEMAXIMUMRATINGSandAPPLICATIONINFORMATIONforSafeOperatingArea.
8.
Performanceguaranteedovertheindicatedoperatingtemperaturerangebydesignand/orcharacterizationtestedatTJ=TA=25°C.
Lowdutycyclepulsetechniquesareusedduringtestingtomaintainthejunctiontemperatureasclosetoambientaspossible.
9.
MaximumdropoutvoltageislimitedtominimuminputvoltageVin=1.
7Vrecommendedforguaranteedoperationatmaximumoutputcurrent.
10.
Refertoapplicationinformationsection.
11.
Valuesbasedondesignand/orcharacterization.
NCP605,NCP606http://onsemi.
com6TYPICALCHARACTERISTICSFigure9.
OutputVoltagevs.
Temperature(Vout=1.
25V)1.
2311.
23481.
23861.
24241.
24621.
251.
25381.
25761.
26141.
26521.
2694020020406080100TA,AMBIENTTEMPERATURE(°C)Vout,OUTPUTVOLTAGE(V)Vin=Vout+0.
5V=1.
75VVin=6.
0VVout=1.
25VFigure10.
OutputVoltagevs.
Temperature(Vout=2.
5V)2.
452.
462.
472.
482.
492.
52.
512.
522.
532.
542.
554020020406080100TA,AMBIENTTEMPERATURE(°C)Vout,OUTPUTVOLTAGE(V)Vin=Vout+0.
5V=3.
0VVin=6.
0VVout=2.
5VFigure11.
OutputVoltagevs.
Temperature(Vout=5.
0V)4.
94.
924.
944.
964.
9855.
025.
045.
065.
085.
14020020406080100Vout,OUTPUTVOLTAGE(V)TA,AMBIENTTEMPERATURE(°C)Vin=6.
0VVin=Vout+0.
5V=5.
5VFigure12.
DropoutVoltagevs.
Temperature(Vout=2.
5V)03060901201501802102402703004020020406080100VDO,DROPOUTVOLTAGE(mV)TA,AMBIENTTEMPERATURE(°C)Iout=500mAIout=300mAIout=150mAFigure13.
DropoutVoltagevs.
Temperature(Vout=5.
0V)0204060801001201401601802004020020406080100TA,AMBIENTTEMPERATURE(°C)VDO,DROPOUTVOLTAGE(mV)Iout=150mAIout=300mAIout=500mAFigure14.
GroundCurrentvs.
Temperature8090100110120130140150160170180402002040608010TA,AMBIENTTEMPERATURE(°C)IGND,GROUNDCURRENT(mA)Vout=5.
0VVout=2.
5VVout=1.
25VVin=Vout+0.
5VIout=500mAVout=5.
0VVout=2.
5VVout=5.
0VNCP605,NCP606http://onsemi.
com7TYPICALCHARACTERISTICSFigure15.
ShortCircuitCurrentLimitvs.
Temperature(Vout=1.
25V)8008408809209601000104010801120116012004020020406080100TA,AMBIENTTEMPERATURE(°C)ISC,SHORTCIRCUITCURRENTLIM-IT(mA)Vin=1.
75VVin=6.
0VFigure16.
PSRRvs.
Frequency(Vout=1.
25V)f,FREQUENCY(Hz)PSRR(dB)Vout=1.
25VVin=2.
25VCout=1.
0mFTA=25°CIout=500mAIout=1mAFigure17.
PSRRvs.
Frequency(Vout=2.
5V)10100100010000100000PSRR(dB)f,FREQUENCY(Hz)Vout=2.
5VVin=3.
5VCout=1.
0mFTA=25°CIout=500mAIout=1mAFigure18.
NoiseDensityvs.
Frequency(Vout=1.
25V)0200400600800100012001400160010100100010000100000f,FREQUENCY(Hz)Vn,NOISEDENSITY(nV/√/HZ)Vin=Vout+0.
5V=1.
75VCin=Cout=1.
0mFIout=500mATA=25°CVn=47mVrmsFigure19.
NoiseDensityvs.
Frequency(Vout=2.
5V)0500100015002000250010100100010000100000f,FREQUENCY(Hz)Vn,NOISEDENSITY(nV/√/HZ)Vin=Vout+0.
5V=3.
0VCin=Cout=1.
0mFIout=500mATA=25°CVn=70mVrmsFigure20.
LoadTransient(Vout=2.
5V)TIME(40ms/div)Vout200mV/divIout500mA/divVin=3.
0VVout=2.
5VCout=10mFtrise=tfall=1msTA=25°CVout=1.
25V010203040506070801010010001000010000001020304050607080NCP605,NCP606http://onsemi.
com8TYPICALCHARACTERISTICSFigure21.
LineTransient(Vout=2.
5V)TIME(20ms/div)Vin=2.
5VIout=500mACout=10mFtrise=tfall=1msTA=25°CVout100mV/divVin500mV/div4.
0V3.
0VFigure22.
StartupTransient(Vout=2.
5V)TIME(10ms/div)Vout1V/divVin1V/divVout=2.
5VIout=0mACout=10mFVin=3.
0Vtrise=1msTA=25°CNCP605,NCP606http://onsemi.
com9DEFINITIONSGeneralAllmeasurementsareperformedusingshortpulselowdutycycletechniquestomaintainjunctiontemperatureascloseaspossibletoambienttemperature.
LineRegulationThechangeinoutputvoltageforachangeininputvoltage.
Themeasurementismadeunderconditionsoflowdissipationorbyusingpulsetechniquessuchthattheaveragejunctiontemperatureisnotsignificantlyaffected.
LoadRegulationThechangeinoutputvoltageforachangeinoutputloadcurrentataconstanttemperature.
DropoutVoltageTheinputtooutputdifferentialatwhichtheregulatoroutputnolongermaintainsregulationagainstfurtherreductionsininputvoltage.
Measuredwhentheoutputdrops100mVbelowitsnominalvalue.
Thejunctiontemperature,loadcurrent,andminimuminputsupplyrequirementsaffectthedropoutlevel.
GroundandDisableCurrentsGroundCurrentisthecurrentthatflowsthroughthegroundpinwhentheregulatoroperateswithoutaloadonitsoutput(IGND).
ThisconsistsofinternalICoperation,bias,etc.
Itisactuallythedifferencebetweentheinputcurrent(measuredthroughtheLDOinputpin)andtheoutputloadcurrent.
Iftheregulatorhasaninputpinthatreducesitsinternalbiasandshutsofftheoutput(enable/disablefunction),thistermiscalledthedisablecurrent(IDIS).
CurrentLimitandShortCircuitCurrentLimitCurrentLimitisvalueofoutputcurrentbywhichoutputvoltagedropsby10%withrespecttoitsnominalvalue.
ShortCircuitCurrentLimitisoutputcurrentvaluemeasuredwithoutputoftheregulatorshortedtoground.
PSRRPowerSupplyRejectionRatioisdefinedasratioofoutputvoltageandinputvoltageripple.
Itismeasuredindecibels(dB).
OutputNoiseVoltageThisistheintegratedvalueoftheoutputnoiseoveraspecifiedfrequencyrange.
Inputvoltageandoutputloadcurrentarekeptconstantduringthemeasurement.
ResultsareexpressedinmVrmsornV/√Hz.
TurnonandTurnoffTimesTurnonTimeistimedifferencemeasuredduringpowerupofthedevicefromthemomentwheninputvoltagereaches90%ofitsoperatingvaluetothemomentwhenoutputvoltagereaches90%ofitsnominalvalueatspecificoutputcurrentorresistiveload.
TurnoffTimeistimedifferencemeasuredduringpowerdownofthedevicefromthemomentwheninputvoltagedropsto10%ofitsoperatingvaluetothemomentwhenoutputvoltagedropsto10%ofitsnominalvalueatspecificoutputcurrentorresistiveload.
EnableandDisableTimesEnableTimeistimedifferencemeasuredduringpowerupofthedevicefromthemomentwhenenablevoltagereaches90%ofinputvoltageoperatingvaluetothemomentwhenoutputvoltagereaches90%ofitsnominalvalueatspecificoutputcurrentorresistiveload.
DisableTimeistimedifferencemeasuredduringpowerdownofthedevicefromthemomentwhenenablevoltagedropsto10%ofinputvoltageoperatingvaluetothemomentwhenoutputvoltagedropsto10%ofitsnominalvalueatspecificoutputcurrentorresistiveload.
LineTransientResponseTypicaloutputvoltageovershootandundershootresponsewhentheinputvoltageisexcitedwithagivenslope.
LoadTransientResponseTypicaloutputvoltageovershootandundershootresponsewhentheoutputcurrentisexcitedwithagivenslopebetweennoloadandfullloadconditions.
ThermalProtectionInternalthermalshutdowncircuitryisprovidedtoprotecttheintegratedcircuitintheeventthatthemaximumjunctiontemperatureisexceeded.
Whenactivatedattypically175°C,theregulatorturnsoff.
Thisfeatureisprovidedtopreventfailuresfromaccidentaloverheating.
MaximumPackagePowerDissipationThepowerdissipationlevelatwhichthejunctiontemperaturereachesitsmaximumoperatingvalue.
NCP605,NCP606http://onsemi.
com10APPLICATIONSINFORMATIONTheNCP605/NCP606regulatorisself*protectedwithinternalthermalshutdownandinternalcurrentlimit.
TypicalapplicationcircuitsareshowninFigures1to4.
InputDecoupling(Cin)Aceramicortantalum1.
0mFcapacitorisrecommendedandshouldbeconnectedclosetotheNCP605/NCP606package.
HighercapacitanceandlowerESRwillimprovetheoveralllinetransientresponse.
OutputDecoupling(Cout)TheNCP605/NCP606isastablecomponentanddoesnotrequireaminimumEquivalentSeriesResistance(ESR)fortheoutputcapacitor.
Theminimumoutputdecouplingvalueis1.
0mFandcanbeaugmentedtofulfillstringentloadtransientrequirements.
Theregulatorworkswithceramicchipcapacitorsaswellastantalumdevices.
Largervaluesimprovenoiserejectionandloadregulationtransientresponse.
TypicalcharacteristicsweremeasuredwithMurataceramiccapacitors.
GRM219R71E105K(1mF,25V,X7R,0805)andGRM21BR71A106K(10mF,10V,X7R,0805).
NoLoadRegulationConsiderationsTheNCP605/NCP606adjustableregulatorwilloperateproperlyunderconditionswheretheonlyloadcurrentisthroughtheresistordividerthatsetstheoutputvoltage.
However,inthecasewheretheNCP605/NCP606isconfiguredtoprovidea1.
250Voutput,thereisnoresistordivider.
Ifthepartisenabledundernoloadconditions,leakagecurrentthroughthepasstransistoratjunctiontemperaturesabove85°Ccanapproachseveralmicroamps,especiallyasjunctiontemperatureapproaches150°C.
Ifthisleakagecurrentisnotdirectedintoaload,theoutputvoltagewillriseuptoalevelapproximately20mVabovenominal.
TheNCP605/NCP606containsanovershootclampcircuittoimprovetransientresponseduringaloadcurrentsteprelease.
Whenoutputvoltageexceedsthenominalbyapproximately20mV,thiscircuitbecomesactiveandclampstheoutputfromfurthervoltageincrease.
TyingtheENABLEpintoVin(NCP606only)willensurethatthepartisactivewheneverthesupplyvoltageispresent,thusguaranteeingthattheclampcircuitisactivewheneverleakagecurrentispresent.
WhentheNCP606adjustableregulatorisdisabled,theovershootclampcircuitbecomesinactiveandthepasstransistorleakagewillchargeanycapacitanceonVout.
Ifnoloadispresent,theoutputcanchargeuptowithinafewmillivoltsofVin.
Inmostapplications,theloadwillpresentsomeimpedancetoVoutsuchthattheoutputvoltagewillbeinherentlyclampedatasafelevel.
Aminimumloadof10mAisrecommended.
UnlikeLP8345,forNCP605/606fixedvoltageversionsthereisnolimitationforminimumloadcurrent.
NoiseDecouplingTheNCP605/NCP606isalownoiseregulatorandneedsnoexternalnoisereductioncapacitor.
Unlikeotherlownoiseregulatorswhichrequireanexternalcapacitorandhaveslowstartuptimes,theNCP605/NCP606operateswithoutanoisereductioncapacitor,hasatypical8msturnontimeandachievesa50mVrmsoverallnoiselevelbetween10Hzand100kHz.
EnableOperation(NCP606Only)Theenablepinwillturntheregulatoronoroff.
Thethresholdlimitsarecoveredintheelectricalcharacteristicstableinthisdatasheet.
Theturnon/turnofftransientvoltagebeingsuppliedtotheenablepinshouldexceedaslewrateof10mV/mstoensurecorrectoperation.
IftheenablefunctionisnottobeusedthenthepinshouldbeconnectedtoVin.
OutputVoltageAdjustTheoutputvoltagecanbeadjustedfrom1times(Figure4)to4times(Figure3)thetypical1.
250VregulationvoltageviatheuseofresistorsbetweentheoutputandtheADJinput.
TheoutputvoltageandresistorsarechosenusingEquation1andEquation2.
Vout+1.
250ǒ1)R1R2)ǒIADJR1(eq.
1)(eq.
2)R2^R1Vout1.
25*1InputbiascurrentIADJistypicallylessthan150nA.
ChooseR1arbitrarilytominimizeerrorsduetothebiascurrentandtominimizenoisecontributiontotheoutputvoltage.
UseEquation2tofindtherequiredvalueforR2.
ThermalAspowerintheNCP605/NCP606increases,itmightbecomenecessarytoprovidesomethermalrelief.
Themaximumpowerdissipationsupportedbythedeviceisdependentuponboarddesignandlayout.
MountingpadconfigurationonthePCB,theboardmaterial,andtheambienttemperatureaffecttherateofjunctiontemperatureriseforthepart.
WhentheNCP605/NCP606hasgoodthermalconductivitythroughthePCB,thejunctiontemperaturewillberelativelylowwithhighpowerapplications.
ThemaximumdissipationtheNCP605/NCP606canhandleisgivenby:PD(MAX)+TJ(MAX)*TARQJA(eq.
3)SinceTJisnotrecommendedtoexceed125°C(TJ(MAX)),thentheNCP605/NCP606solderedon645mm2,1ozcopperarea,FR4candissipateupto1.
3WwhentheambientNCP605,NCP606http://onsemi.
com11temperature(TA)is25°C.
SeeFigure23forRqJAversusPCBarea.
ThepowerdissipatedbytheNCP605/NCP606canbecalculatedfromthefollowingequations:PD[VinǒIGND@IOUT)IoutǒVin*Vout(eq.
4)orVin(MAX)[PD(MAX))ǒVoutIoutIout)IGND(eq.
5)0501001502002500200400600800Figure23.
ThermalResistancevs.
CopperAreaCOPPERAREA(mm2)RqJA,(°C/W)FR4=1.
0ozFR4=2.
0ozHintsVinandGNDprintedcircuitboardtracesshouldbeaswideaspossible.
Whentheimpedanceofthesetracesishigh,thereisachancetopickupnoiseorcausetheregulatortomalfunction.
Placeexternalcomponents,especiallytheoutputcapacitor,ascloseaspossibletotheNCP605/NCP606,andmaketracesasshortaspossible.
NCP605,NCP606http://onsemi.
com12ORDERINGINFORMATIONDeviceNominalOutputVoltage(V)MarkingPackageShippingNCP605MNADJT2GADJP605ADJDFN6(PbFree)3000/Tape&ReelNCP605MN15T2G1.
5P605150DFN6(PbFree)3000/Tape&ReelNCP605MN18T2G1.
8P605180DFN6(PbFree)3000/Tape&ReelNCP605MN25T2G2.
5P605250DFN6(PbFree)3000/Tape&ReelNCP605MN28T2G2.
8P605280DFN6(PbFree)3000/Tape&ReelNCP605MN30T2G3.
0P605300DFN6(PbFree)3000/Tape&ReelNCP605MN33T2G3.
3P605330DFN6(PbFree)3000/Tape&ReelNCP605MN50T2G5.
0P605500DFN6(PbFree)3000/Tape&ReelNCP606MNADJT2GADJP606ADJDFN6(PbFree)3000/Tape&ReelNCP606MN15T2G1.
5P606150DFN6(PbFree)3000/Tape&ReelNCP606MN18T2G1.
8P606180DFN6(PbFree)3000/Tape&ReelNCP606MN25T2G2.
5P606250DFN6(PbFree)3000/Tape&ReelNCP606MN28T2G2.
8P606280DFN6(PbFree)3000/Tape&ReelNCP606MN30T2G3.
0P606300DFN6(PbFree)3000/Tape&ReelNCP606MN33T2G3.
3P606330DFN6(PbFree)3000/Tape&ReelNCP606MN50T2G5.
0P606500DFN6(PbFree)3000/Tape&ReelForinformationontapeandreelspecifications,includingpartorientationandtapesizes,pleaserefertoourTapeandReelPackagingSpecificationsBrochure,BRD8011/D.
NCP605,NCP606http://onsemi.
com13PACKAGEDIMENSIONSDFN63.
0x3.
3,0.
95PCASE506AXISSUEAONSemiconductorandaretrademarksofSemiconductorComponentsIndustries,LLCdbaONSemiconductororitssubsidiariesintheUnitedStatesand/orothercountries.
ONSemiconductorownstherightstoanumberofpatents,trademarks,copyrights,tradesecrets,andotherintellectualproperty.
AlistingofONSemiconductor'sproduct/patentcoveragemaybeaccessedatwww.
onsemi.
com/site/pdf/PatentMarking.
pdf.
ONSemiconductorreservestherighttomakechangeswithoutfurthernoticetoanyproductsherein.
ONSemiconductormakesnowarranty,representationorguaranteeregardingthesuitabilityofitsproductsforanyparticularpurpose,nordoesONSemiconductorassumeanyliabilityarisingoutoftheapplicationoruseofanyproductorcircuit,andspecificallydisclaimsanyandallliability,includingwithoutlimitationspecial,consequentialorincidentaldamages.
BuyerisresponsibleforitsproductsandapplicationsusingONSemiconductorproducts,includingcompliancewithalllaws,regulationsandsafetyrequirementsorstandards,regardlessofanysupportorapplicationsinformationprovidedbyONSemiconductor.
"Typical"parameterswhichmaybeprovidedinONSemiconductordatasheetsand/orspecificationscananddovaryindifferentapplicationsandactualperformancemayvaryovertime.
Alloperatingparameters,including"Typicals"mustbevalidatedforeachcustomerapplicationbycustomer'stechnicalexperts.
ONSemiconductordoesnotconveyanylicenseunderitspatentrightsnortherightsofothers.
ONSemiconductorproductsarenotdesigned,intended,orauthorizedforuseasacriticalcomponentinlifesupportsystemsoranyFDAClass3medicaldevicesormedicaldeviceswithasameorsimilarclassificationinaforeignjurisdictionoranydevicesintendedforimplantationinthehumanbody.
ShouldBuyerpurchaseoruseONSemiconductorproductsforanysuchunintendedorunauthorizedapplication,BuyershallindemnifyandholdONSemiconductoranditsofficers,employees,subsidiaries,affiliates,anddistributorsharmlessagainstallclaims,costs,damages,andexpenses,andreasonableattorneyfeesarisingoutof,directlyorindirectly,anyclaimofpersonalinjuryordeathassociatedwithsuchunintendedorunauthorizeduse,evenifsuchclaimallegesthatONSemiconductorwasnegligentregardingthedesignormanufactureofthepart.
ONSemiconductorisanEqualOpportunity/AffirmativeActionEmployer.
Thisliteratureissubjecttoallapplicablecopyrightlawsandisnotforresaleinanymanner.
PUBLICATIONORDERINGINFORMATIONTECHNICALSUPPORTNorthAmericanTechnicalSupport:VoiceMail:18002829855TollFreeUSA/CanadaPhone:011421337902910LITERATUREFULFILLMENT:EmailRequeststo:orderlit@onsemi.
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