COS29152WU

COS2915X/2930X/2950X/2975X
www.cosine-ic.com 1Features
■HighCurrentCapability
COS29150/1/2/3:1.5A
COS29300/1/2/3:3.0A
COS29500/1/2/3:5.0A
COS29750/1/2/3:7.5A
■WideInputVoltageRange:4~36V
■LowDropoutVoltage
■LowGroundCurrent
■Accurate2%Tolerance
■ExtremelyFastTransientResponse
■ErrorFlagSignalsOutput
Out-of-Regulation
■AdjustableOutputVoltage
■ExtendedTemperatureRanges
From-40°Cto+125°C
■AvailableinGreenTO-263,TO-220and
TO-247Packages
Applications
■AutomotiveElectronics
■Battery-PoweredEquipment
■High-EfficiencyLinearPowerSupplies
■High-EfficiencyGreenComputerSystems
■High-EfficiencyPost-Regulatorfor
SwitchingSupply
Rev1.2
Copyright@2018CosineNanoelectronicsInc.Allrightsreserved
Theinformationprovidedhereisbelievedtobeaccurateandreliable.CosineNanoelectronicsassumes
noreliabilityforinaccuraciesandomissions.Specificationsdescribedandcontainedherearesubjected
tochangewithoutnoticeonthepurposeofimprovingthedesignandperformance.Allofthisinformation
describedhereinshouldnotbeimpliedorgrantedforanythirdparty.GeneralDescription
TheCOS2915x/2930x/2950x/2975xarehigh
current,highaccuracy,lowdropoutvoltage
regulators.Theseregulatorsfeature350mVto
425mV(fullload)typicaldropoutvoltagesand
verylowgroundcurrent.Designedforhigh
currentloads,thesedevicesalsofindapplica-
tionsinlowercurrent,extremelylowdropout
criticalsystems,wheretheirtinydropout
voltageandgroundcurrentvaluesare
importantattributes.
TheCOS2915x/2930x/2950x/2975xarefully
protectedagainstovercurrentfaults,reversed
inputpolarity,reversedleadinsertion,over
temperatureoperation,andpositiveand
negativetransientvoltagespikes.Fivepin
versionsfeaturelogiclevelON/OFFcontrol
(COS29xxx)andanerrorflagthatsignals
whenevertheoutputfallsoutofregulation
(COS29xx3).Flaggedstatesincludelowinput
voltage(dropout),outputcurrentlimit,over
temperatureshutdown,andextremelyhigh
voltagespikesontheinput.
TheCOS2915x/2930x/2950x/2975xareavail-
ablein3/5-pinTO-263andTO-220.The
COS2975x7.5Aregulatorsarealsoavailablein
a5-pinTO-247package.High-CurrentLowDropoutRegulators
COS2915X/2930X/2950X/2975X
www.cosine-ic.com 21PinConfigurationandFunctions
PinFunctions
PinNo PinName I/O Description
2 IN IINPUT:Suppliesthecurrenttotheoutputpowerdevice.
4 OUT OOUTPUT:Theregulatoroutputvoltage.
3 GND -GROUND
1 EN IENABLE:AvailableforCOS29xx2.CMOScompatiblecontrolinput.
Logic-high=enable,logic-low=shutdown
5 ADJ IADJUST:Adjustableregulatorfeedbackinputthatconnectstothe
resistorvoltagedividerthatisplacedfromOUTtoGNDinorderto
settheoutputvoltage.
1 FLG OFLAG:AvailableforCOS29xx3.Active-lowerrorflagoutputsignal
thatindicatesanoutputfaultcondition.
– TAB -Internallyconnecteddirectlytothedevicepin3(GND).Thethermal
tabmustbeconnectedtoacopperareaonthePCBatthesame
potentialasdevicepin3(GND)toassurethermalperformance,or
leavethethermaltabfloating.DoNOTconnectthethermaltabto
anypotentialotherthanthesamepotentialatdevicepin3.
COS2915X/2930X/2950X/2975X
www.cosine-ic.com 32ProductSpecification
2.1AbsoluteMaximumRatings(1)
Parameter Rating Units
MaximumInputVoltage:VIN -0.3to+40 V
EnableInputVoltage -0.3toVIN V
StorageTemperatureRange -55to150 °C
OperatingJunctionTemperature
Range-40to125 °C
ESDSusceptibility,HBM 2000 V
(1)Stressesexceedingtheabsolutemaximumratingsmaydamagethedevice.Thedevicemaynotfunctionorbeoperable
abovetherecommendedoperatingconditionsandstressingthepartstotheselevelsisnotrecommended.Inaddition,
extendedexposuretostressesabovetherecommendedoperatingconditionsmayaffectdevicereliability.Theabsolute
maximumratingsarestressratingsonly.
2.2ThermalData
Parameter Rating Unit
PackageThermalResistance,RθJC
(Juntion-to-case)2(TO-220)
2(TO-263)
1.5(TO-247)
3(TO-252)°C/W
2.3RecommendedOperatingConditions
Parameter Rating Unit
InputSupplyVoltage +4.5~+26 V
Operatingambienttemperature -40to+85 °C
COS2915X/2930X/2950X/2975X
www.cosine-ic.com 42.4ElectricalCharacteristics
(VIN=VOUT+1V,IOUT=10mA,TJ=+25°C,unlessotherwisenoted)
Parameter Symbol Conditions Min.Typ.Max.Unit
OutputVoltage VOUTIOUT=10mA -1-+1%
10mA≤IOUT≤IFL,
(VOUT+1V)≤VIN≤26V-2-+2%
LineRegulationIOUT=10mA,
(VOUT+1V)≤VIN≤26V0.30.6%
LoadRegulation 10mA≦IOUT≦1.5A 0.23 %
OutputVoltageTemperature
CoefficientΔVo/ΔT 20100ppm/°C
DropoutVoltage
ΔVOUT=-1%COS2915x,IOUT=100mA -80200
mVCOS2915x,IOUT=750mA -220-
COS2915x,IOUT=1.5A -310600
COS2930x,IOUT=100mA -80175
COS2930x,IOUT=1.5A -250-
COS2930x,IOUT=3A -370600
COS2950x,IOUT=250mA -125250
COS2950x,IOUT=2.5A -250-
COS2950x,IOUT=5A -370600
COS2975x,IOUT=250mA -50-
COS2975x,IOUT=4A -180-
COS2975x,IOUT=7.5A -300
GroundCurrent
(VIN=VOUT+1V)IGNDCOS2915x,IOUT=750mA
VIN=VOUT+1V-5.2-
mACOS2915x,IOUT=1.5A -28-
COS2930x,IOUT=1.5A
VIN=VOUT+1V-5.2-
COS2930x,IOUT=3A -28-
COS2950x,IOUT=2.5A
VIN=VOUT+1V-5.2-
COS2950x,IOUT=5A -28-
COS2975x,IOUT=4A
VIN=VOUT+1V-5.2-
COS2975x,IOUT=7.5A -28-
COS2915X/2930X/2950X/2975X
www.cosine-ic.com 5GroundPinCurrentatDropout
(VINis0.5Vlessthanspecified
VOUT)IGRNDDOCOS2915x,IOUT=10mA -1.9-
mACOS2930x,IOUT=10mA -1.9-
COS2950x,IOUT=10mA -1.9-
COS2975x,IOUT=10mA -1.9-
CurrentLimitILIMCOS2915x,VOUT=0V -2.02.5
ACOS2930x,VOUT=0V -4.04.8
COS2950x,VOUT=0V -6.37.8
COS2975x,VOUT=0V -9.511.7
GroundCurrentinShutdown -575nA
OutputNoiseVoltage enCL=10µF,IL=100mA,
10Hzto100kHz-390-µVrms
CL=33µF,IL=100mA,
10Hzto100kHz-211-µVrms
Reference
ReferenceVoltage 1.221.241.252V
ReferenceVoltageTemperature
Coefficient-20-ppm/°C
AdjustPinBiasCurrent –100pA
FlagOutput
OutputLowVoltage VOL –400mV
Hysteresis -15- mV
ENABLEInput
InputLogicVoltageLow(OFF) –0.8V
InputLogicVoltageHigh(ON) 2.4– V
EnablePinInputCurrentVEN=0.8V –24pA
VEN=26V –3 nA
RegulatorOutputCurrentin
Shutdown–40°C≤TJ≤+125°C –18µA
COS2915X/2930X/2950X/2975X
www.cosine-ic.com 63ApplicationNotes
TheCOS2915x,COS2930x,COS2950x,andCOS2975xarehigh-performancelow-dropoutvoltage
regulatorssuitableforallmoderatetohigh-currentvoltageregulatorapplications.Their350mVto
425mVtypicaldropoutvoltageatfullloadmakethemespeciallyvaluableinbatterypowered
systemsandashighefficiencynoisefiltersinpost-regulatorapplications.
TheCOS2915x/2930x/2950x/2975xfamilyofregulatorsarefullyprotectedfromdamageduetofault
conditions.Currentlimitingisprovided.Thislimitingislinear;outputcurrentunderoverload
conditionsisconstant.Thermalshutdowndisablesthedevicewhenthedietemperatureexceedsthe
+125°Cmaximumsafeoperatingtemperature.Linetransientprotectionallowsdeviceandload
survivalevenwhentheinputvoltagespikesbetween–0.3Vand+40V.
Whentheinputvoltageexceedsapproximately36V,theover-voltagesensordisablestheregulator.
Theoutputstructureoftheseregulatorsallowsvoltagesinexcessofthedesiredoutputvoltagetobe
appliedwithoutreversecurrentflow.COS29xx2versionsofferalogic-levelON/OFFcontrol.When
disabled,thedevicesdrawnearlyzerocurrent.Anadditionalfeatureofthisregulatorfamilyisa
commonpinout.Adesign’scurrentrequirementmaychangeupordown,butusethesameboard
layoutbecausealloftheseregulatorshaveidenticalpinouts.
3.1TypicalApplicationCircuit
Figure1TypicalApplicationCircuit
*seeminimumloadcurrentsection.OntheCOS29xx2,theEN(ENABLE)pinmaybetiedtoVINifit
isnotrequiredforON/OFFcontrol.
COS2915X/2930X/2950X/2975X
www.cosine-ic.com 73.2CapacitorRequirements
Forstabilityandminimumoutputnoise,acapacitorontheregulatoroutputisnecessary.Thevalue
ofthiscapacitorisdependentupontheoutputcurrent;lowercurrentsallowsmallercapacitors.The
COS2915x/2930x/2950x/2975xregulatorsarestablewiththefollowingminimumcapacitorvaluesat
fullload,asnotedinTable3-1.ThiscapacitorneednotbeanexpensivelowESRtype:aluminum
electrolyticsareadequate.Infact,extremelylowESRcapacitorsmaycontributetoinstability.
Tantalumcapacitorsarerecommendedforsystemswherefastloadtransientresponseisimportant
wheretheregulatorispoweredfromasourcewithhighACimpedance,a0.1μFcapacitorconnected
betweenInputandGNDisrecommended.Thiscapacitorshouldhavegoodcharacteristicstoabove
250kHz.
Table3-1Minimumcapacitorvaluesatfullload
Device Full-LoadCapacitor
COS2915x 10µF
COS2930x 10µF
COS2950x 10µF
COS2975x 22µF
3.3MinimumLoadCurrent
TheCOS2915x–2975xregulatorsarespecifiedbetweenfiniteloads.Iftheoutputcurrentistoosmall,
leakagecurrentsdominateandtheoutputvoltagerises.Thefollowingminimumloadcurrent
swampsanyexpectedleakagecurrentacrosstheoperatingtemperaturerange,asshowninTable
3-2.
Table3-2MinimumLoadCurrents
Device MinimumLoad
COS2915x 5mA
COS2930x 7mA
COS2950x 10mA
COS2975x 10mA
COS2915X/2930X/2950X/2975X
www.cosine-ic.com 83.4AdjustableRegulatorDesign
COS29xx2andCOS29xx3,allowprogrammingtheoutputvoltageanywherebetween1.25Vandthe
25V.Tworesistorsareused.Theresistorvaluesarecalculatedbyfollowingequation.
R1=R2×(VOUT/1.240–1)
Intheequationabove,VOUTisthedesiredoutputvoltage.ThetypicalapplicationcircuitinFigure1
showscomponentdefinition.TheresistorvaluebetweenVOUTandtheadjustpinshouldnotexceed
10kΩ.Largervaluescancauseinstability.Applicationswithwidelyvaryingloadcurrentsmayscale
theresistorstodrawtheminimumloadcurrentrequiredforproperoperation(seetheMinimumLoad
Currentsub-section).
3.5ErrorFlag
COS29xx3versionsfeatureanErrorFlag,whichlooksattheoutputvoltageandsignalsanerror
conditionwhenthisvoltagedrops5%belowitsexpectedvalue.Theerrorflagisanopen-collector
outputthatpullslowunderfaultconditions.Itmaysink10mA.Lowoutputvoltagesignifiesanumber
ofpossibleproblems,includinganovercurrentfault(thedeviceisincurrent-limit)andlowinput
voltage.Theflagoutputisfunctionalduringover-temperatureshutdownconditions.
3.6EnableInput
COS29xx2versionsfeatureanenable(EN)inputthatallowsON/OFFcontrolofthedevice.Special
designallows“zero”currentdrainwhenthedeviceisdisabled;onlymicroamperesofleakagecurrent
flows.TheENinputhasTTL/CMOScompatiblethresholdsforsimpleinterfacingwithlogic,ormay
bedirectlytiedto≤36V.
4PackageandOrderingInformation
Model OrderNumberPackage PackageOptionMarkingInformation
COS29152COS29152WUTO-263-5TapeandReel,800COS29152WU
COS29302COS29302WUTO-263-5TapeandReel,800COS29302WU
COS29502COS29502WUTO-263-5TapeandReel,800COS29502WU
COS29752COS29752WUTO-263-5TapeandReel,800COS29752WU
COS2915X/2930X/2950X/2975X
www.cosine-ic.com 95PackageInformation
5.1TO-263-5(PackageOutlineDimensions)