LP38690, LP38692 Datasheet - Texas Instruments

1 LP38692 INOUTSNS**GND1 PF *1 PF *VOUTVINVENENLP38690 INOUTSNS**GNDVOUTVIN1 F*1 F*ProductFolderSample &BuyTechnicalDocumentsTools &SoftwareSupport &CommunityReferenceDesignAn IMPORTANTNOTICEat the end of this datasheetaddressesavailability,warranty, changes,use in safety-criticalapplications,intellectual propertymattersand , LP38692 SNVS322M DECEMBER2004 REVISEDDECEMBER2015LP38690,LP386921-A Low DropoutCMOSL inearRegulatorsStablewith CeramicOutputCapacitors11 Features1 WideInputVoltageRange( V to 10 V) (25 C) Low DropoutVoltage:450 mV at 1 A(typical,5 VOUT) Precision(Trimmed)BandgapReference EnsuredSpecificationsfor 40 C to 125 C 1- A Off-StateQuiescentCurrent ThermalOverloadProtection FoldbackCurrentLimiting 3-LeadTO-252,5-LeadSOT-223,and 6-BumpWSONP ackages EnablePin ( LP38692 ) GroundPin Current.

2 55 A (typical)at Full Load (25 C) Accuracy2 Applications HardDiskDrives NotebookComputers BatteryPoweredDevices PortableInstrumentation3 DescriptionThe LP38690and LP38692low-dropoutCMOS linearregulatorsprovidetightoutputtolera nce( ),extremelylow dropoutvoltage(450mV at a1-A loadcurrent,VOUT= 5 V), andexcellentACperformanceutilizingultral ow low thermalresistanceof the WSON,SOT-223,and TO-252packagesallowthe full operatingcurrentto be usedevenin use of a PMOS powertransistormeansthat noDC basedrivecurrentis requiredto biasit allowinggroundpincurrentto remainbelow100 Aregardlessof loadcurrent,inputvoltage,or (1)PARTNUMBERPACKAGEBODYSIZE(NOM) lp38690 TO-252(3) x (6) x (5) x (6) x (1) For all availablepackages,see the orderableaddendumatthe end of the lp38690 * Minimumvaluerequiredfor stability.

3 ** LP38692 * Minimumvaluerequiredfor stability.** , LP38692 SNVS322M DECEMBER2004 :LP38690LP38692 SubmitDocumentationFeedbackCopyright 2004 2015,TexasInstrumentsIncorporatedTableof Contents1 Pin Configurationand Applicationand Deviceand Mechanical,Packaging,and RevisionHistoryNOTE:Pagenumbersfor previousrevisionsmay differfrompagenumbersin the (March2015)to RevisionMPage Addedtop navigatoricon for TI (December2014)to RevisionLPage Changed"mA" backto "mV" - (April2013)to RevisionKPage ChangedDeviceInformationandESDR atingtables,FeatureDescription,DeviceFun ctionalModes,ApplicationandImplementatio n,PowerSupplyRecommendations,Layout,Devi ceandDocumentationSupport, andMechanical,Packaging,andOrderableInfo rmationsections;updateThermalValuesmoved somecurvestoApplicationCurvessection.

4 ChangepackagenamePFMto TO-252(Nationalto TI nomenclature)and pin namesfromVIN,VOUTto IN, (April2013)to RevisionJPage Changedlayoutof NationalDataSheetto TI Pad on Bottom(DAP)N/COUTGNDENIN12435IN234561 GNDN/COUTSNSINE xposed Pad on Bottom(DAP)3LP38690, DECEMBER2004 REVISEDDECEMBER2015 ProductFolderLinks:LP38690LP38692 SubmitDocumentationFeedbackCopyright 2004 2015,TexasInstrumentsIncorporated5 Pin Configurationand FunctionsLP38690TO-252(NDP)3 PinsTop ViewLP38690 WSON(NGG)6 PinsTop ViewLP38690/92 SOT-223(NDC)5 PinsTop ViewLP38692 WSON(NGG)6 PinsTop ViewPin FunctionsPINTYPEDESCRIPTIONNAMELP38690LP 38692TO-252 WSONSOT-223 WSONEN 13 IThe Enable(EN)

5 Pin allowsthe part to be turnedON and OFFby pullingthispin HIGHor Circuitgroundfor the the TO-252and SOT-223packagesthisis thermallyconnectedto the die and functionsas a heatsink whensoldereddownto a , 641, 6 IThis is the inputsupplyvoltageto the WSON devices,bothINpins mustbe tied togetherfor full currentoperation(500mA maximumperpin). 5 5 IWSON only - Outputsensepin allowsremotesensingat the load whicheliminatesthe errorin outputvoltagedue to voltagedropscausedby theresistancein the tracesbetweenthe regulatorand the pin mustbe tied to X X WSON only - The DAP(ExposedPad)functionsas a thermalconnectionwhensolderedto a , LP38692 SNVS322M DECEMBER2004.

6 LP38690LP38692 SubmitDocumentationFeedbackCopyright 2004 2015,TexasInstrumentsIncorporated(1)Stre ssesbeyondthoselistedunderAbsoluteMaximu mRatingsmay causepermanentdamageto the stressratingsonly,whichdo not implyfunctionaloperationof the deviceat theseor any otherconditionsbeyondthoseindicatedunder RecommendedOperatingConditions. Exposureto absolute-maximum-ratedconditionsfor extendedperiodsmay affectdevicereliability.(2)If usedin a dual-supplysystemwherethe regulatorload is returnedto a negativesupply,the outputpin mustbe diodeclampedtoground.

7 (3)At elevatedtemperatures,devicepowerdissipat ionmustbe deratedbasedon packagethermalresistanceand heatsinkvalues(if aheatsinkis used).Whenusingthe WSON package,referto TI ApplicationReportAN-1187 LeadlessLeadframePackage(LLP)(SNOA401) and theWSONM ountingsectionin this powerdissipationcausesthe junctiontemperatureto exceedspecifiedlimits,the devicegoesinto (unlessotherwisenoted)(1)MINMAXUNITV(max )All pins (withrespectto GND) (2)InternallylimitedJunctiontemperature 40150 CLeadtemperature(soldering,5 seconds)260 Powerdissipation(3)InternallylimitedStor agetemperature,Tstg 65150 C(1)

8 JEDEC documentJEP155statesthat 500-VHBM allowssafe manufacturingwith a (ESD)ElectrostaticdischargeHuman-bodymod el(HBM),per ANSI/ESDA/JEDECJS-001(1) (unlessotherwisenoted) 40125 C(1)For moreinformationabouttraditionaland new thermalmetrics,see theSemiconductorandICPackageThermalMetri csapplicationreport,SPRA953.(2)Junction- to-ambientthermalresistance, (1)LP38690LP38690/92LP38692 UNITTO-252 WSONSOT-2233 PINS6 PINS5 PINSR JA(2) C/WR JC(top)Junction-to-case(top) C/WR C/W C/W C/WR JC(bot)Junction-to-case(bottom) C/W5LP38690, DECEMBER2004 REVISEDDECEMBER2015 ProductFolderLinks:LP38690LP38692 SubmitDocumentationFeedbackCopyright 2004 2015,TexasInstrumentsIncorporated(1)Typi calnumbersrepresentthe mostlikelyparametricnormfor 25 C operation.

9 (2)Outputvoltageline regulationis definedas the changein outputvoltagefromnominalvalueresultingfr oma changein inputvoltage.(3)Outputvoltageload regulationis definedas the changein outputvoltagefromnominalvalueas the load currentincreasesfrom1 mA tofull load.(4)Dropoutvoltageis definedas the minimuminputto outputdifferentialrequiredto maintainthe outputwithin100 mV of :VIN= VOUT+ 1 V, CIN= COUT= 10 F, ILOAD= 10 mA, and limitsare for TJ= 25 C. Minimum(MIN)and maximum(MAX)limitsare specifiedthroughtesting,statisticalcorre lation,or (1)MAXUNITVOUTO utputvoltagetolerance A < IL< 1 AVO+ 1 V VIN 10 V 40 C TJ 125 C 55 VOUT/ VINO utputvoltagelineregulation(2)VOUT+ V VIN 10 VIL= 25 + V VIN 10 VIL= 25 mA 40 C TJ 125 C1 VOUT/ ILOutputvoltageloadregulation(3)1 mA < IL< 1 AVIN= VOUT+ 1 mA < IL< 1 AVIN= VOUT+ 1 V 40 C TJ 125 C5 VIN VOUTD ropoutvoltage(4)

10 VOUT= VIL= 1 A950mVVOUT= VIL= 1 A 40 C TJ 125 C1600 VOUT= VIL= A80IL= 1 A800 VOUT= V 40 C TJ 125 CIL= A145IL= 1 A1300 VOUT= VIL= A65IL= 1 A650 VOUT= V 40 C TJ 125 CIL= A110IL= 1 A1000 VOUT= 5 VIL= A45IL= 1 A450 VOUT= 5 V, 40 C TJ 125 CIL= A100IL= 1 A800 IQQuiescentcurrentVIN 10 V, IL= 100 A to 1 A55 AVIN 10 V, IL= 100 A to 1 A 40 C TJ 125 C100 VEN V (LP38692only) (MIN)Minimumload currentVIN VOUT 4 V 40 C TJ 125 C100 IFBF oldbackcurrentlimitVIN VOUT> 5 V450mAVIN VOUT< 4 V1500 PSRRR ipplerejectionVIN= VOUT+ 2 V(DC), with 1V(p-p)/ 120Hz ripple55dBTSDT hermalshutdownactivation(junctiontemp)16 0 CTSD(HYST)Thermalshutdownhysteresis(junc tiontemp)10enOutputnoiseVOUT= V, BW = 10 Hz to 10 V/ HzVOUT(LEAK)OutputleakagecurrentVOUT= VOUT(NOM)+ 1 V at 10 A101001k10k100kFREQUENCY (Hz) (PV/Hz)COUT = 100 PF101001k10k100k0102030405060 FREQUENCY (Hz)RIPPLE REJECTION (dB)COUT = 10 PFVIN(DC)