User's Guide SLVU292A–April2010–RevisedApril2010 TPS6261x/TPS6262x/TPS6266xEVM This user’s guide describes the characteristics, operation, and use of the TPS6261x/2x/6xEVM-419 evaluation module (EVM). The TPS626xxEVM-419 is a fully assembled and tested platform for evaluating the performance of the TPS6261x/2x/6x high-frequency, synchronous, step-down dc-dc converters optimized for battery-powered portable applications. This document includes schematic diagrams, a printed circuit board (PCB) layout, bill of materials, and test data. Throughout this document, the abbreviations EVM, TPS626xxEVM, TPS6261x/2x/6xEVM, and the term evaluation module are synonymouswiththeTPS6261x/2x/6xEVM-419unlessotherwisenoted. Contents 1 Introduction .................................................................................................................. 2 1.1 Features ............................................................................................................. 2 1.2 Applications ......................................................................................................... 2 1.3 EVMOrderingOptions ............................................................................................ 2 2 TPS6261x/2x/6xEVMElectricalPerformanceSpecifications ......................................................... 3 3 TPS626xxEVMSchematic ................................................................................................. 3 4 ConnectorandTestPointDescriptions .................................................................................. 4 4.1 Input/OutputConnectors:TPS626xxEVM..................................................................... 4 4.2 JumpersandSwitches ............................................................................................ 4 5 TestConfiguration .......................................................................................................... 5 5.1 HardwareSetup .................................................................................................... 5 5.2 Procedure ........................................................................................................... 5 6 TPS626xxEVMTestData.................................................................................................. 6 6.1 Efficiency ............................................................................................................ 6 6.2 Start-Up ............................................................................................................. 8 6.3 OutputVoltageRipple(Power-SaveMode) .................................................................... 9 6.4 OutputVoltageRipple(PWM) .................................................................................... 9 7 TPS626xxEVMAssemblyDrawingsandLayout ...................................................................... 10 8 BillofMaterials............................................................................................................. 13 9 MarkingInformation ....................................................................................................... 13 ListofFigures 1 TPS626xxEVMSchematic................................................................................................. 3 2 HardwareBoardConnection.............................................................................................. 5 3 TPS6262xEVMEfficiencyversusLoadCurrent(VIN=2.7V)........................................................ 6 4 TPS6262xandTPS6262xEVMEfficiencyversusLoadCurrent(VIN=3.6V)..................................... 6 5 TPS6261xEVMEfficiencyversusLoadCurrent(V =1.8V)....................................................... 6 OUT 6 TPS6261xEVMEfficiencyversusLoadCurrent(V =1.2V)....................................................... 6 OUT 7 TPS6266xEVMEfficiencyversusLoadCurrent(V =1.8V)....................................................... 6 OUT 8 TPS6266xEVMEfficiencyversusLoadCurrent(V =1.2V)....................................................... 6 OUT 9 TPS62660EVMStartup.................................................................................................... 8 10 TPS62620EVMStart-Up................................................................................................... 8 11 TPS6261xEVMStart-Up................................................................................................... 8 12 Power-SaveModeRipple.................................................................................................. 9 BluetoothisaregisteredtrademarkofBluetoothSIG. Allothertrademarksarethepropertyoftheirrespectiveowners. SLVU292A–April2010–RevisedApril2010 TPS6261x/TPS6262x/TPS6266xEVM 1 Copyright©2010,TexasInstrumentsIncorporated

Introduction www.ti.com 13 PWMOutputRipple ........................................................................................................ 9 14 TPS626xxEVMComponentPlacement(TopView) .................................................................. 10 15 TPS626xxEVMTop-SideCopper(TopView)......................................................................... 11 16 TPS626xxEVMBottom-SideCopper(BottomView).................................................................. 12 1 Introduction TheTPS6261x,TPS6262x,andTPS6266xdevicesareseriesofhigh-frequency,synchronous,step-down dc-dcconvertersoptimizedforbattery-poweredportableapplications.Intendedforlow-powerapplications, theTPS6261x,TPS6262x,andTPS6266xsupportupto350-mAloadcurrent,andallowtheuseof low-costchipinductorsandcapacitors.Withawideinputvoltagerangeof2.3Vto5.5V,thedevices supportapplicationspoweredbylithium-ion(Li-Ion)batterieswithextendedvoltageranges.Differentfixed voltageoutputversionsoftheTPS6261x,TPS6262x,andTPS6266xareavailablefrom1.2Vto2.3V. Theseconvertersoperateataregulated6-MHzswitchingfrequencyandenterapower-savemode operationunderlightloadcurrentsinordertomaintainhighefficiencyovertheentireloadcurrentrange.A PFMmodeextendsthebatterylifebyreducingthequiescentcurrentto31µA(typ)duringlightload operation. 1.1 Features • Inputvoltagerange:2.3Vupto5.5V • Fixedoutputvoltages • Upto2.0-Aoutputcurrent • 6-MHzregulatedfrequencyoperation • Outputcapacitordischarge(optional) • Totalsolutionsize:<12mm2 1.2 Applications • Cellphones,smartphones • WLAN,GPS,andBluetooth®applications • DTVtuners • DC/DCmicro-modules 1.3 EVM Ordering Options Table1providestheorderinginformationforthevariousEVMoptions. Table1.OrderingInformation MaximumOutput DeviceSpecific OrderableEVMNumber DevicePartNumber OutputVoltage Current Feature TPS62615EVM-419 TPS62615 1.2V 350mA TPS62621EVM-419 TPS62621 1.8V 600mA TPS62622EVM-419 TPS62622 1.5V 600mA TPS62624EVM-419 TPS62624 1.2V 600mA Outputcapacitor discharge TPS62625EVM-419 TPS62625 1.2V 600mA TPS62660EVM-419 TPS62660 1.8V 1000mA 2 TPS6261x/TPS6262x/TPS6266xEVM SLVU292A–April2010–RevisedApril2010 Copyright©2010,TexasInstrumentsIncorporated

www.ti.com TPS6261x/2x/6xEVMElectricalPerformanceSpecifications 2 TPS6261x/2x/6xEVM Electrical Performance Specifications Table2summarizestheTPS6261x/2x/6xEVM-419performancespecifications. Table2.TPS6261x/2x/6xEVMPerformanceCharacteristics Parameter NotesandConditions Min Typ Max Unit INPUTCHARACTERISTICS V Inputvoltage 2.2 5.5 V IN V InputUVLO 2.05 2.1 V IN_UVLO I =0mA,devicenotswitching 31 55 µA I Operatingquiescentcurrent O Q I =0mA,PWMmode 7.6 mA O OUTPUTCHARACTERISTICS 2.3V<V <4.8V,0mA<I <600mA 0.98x V 1.03x IN OUT NOM V (PFM/PWM) V V NOM NOM TPS6261x 2.3V<V <5.5V,0mA<I <600mA 0.98x V 1.04x TPS6262x Regulateddcoutputvoltage IN OUT NOM V (PFM/PWM) V V TPS6266x NOM NOM 2.3V<V <5.5V,0mA<I <600mA 0.98x V 1.02x V IN OUT NOM (PWM) V V NOM NOM Lineregulation 0.13 %/V Loadregulation –0.0003 %/A TPS6261x 350 mA I Outputcurrent TPS6262x 600 mA OUT TPS6266x 1000 mA SYSTEMCHARACTERISTICS f Switchingfrequency 5400 6000 6600 kHz SW hpk Peakefficiency V =Nom 91 % IN 3 TPS626xxEVM Schematic Figure1illustratestheTPS626xxEVM-419schematic. + NOTE: Forreferenceonly;seeTable3forspecificvalues. Figure1.TPS626xxEVMSchematic SLVU292A–April2010–RevisedApril2010 TPS6261x/TPS6262x/TPS6266xEVM 3 Copyright©2010,TexasInstrumentsIncorporated

ConnectorandTestPointDescriptions www.ti.com 4 Connector and Test Point Descriptions 4.1 Input / Output Connectors: TPS626xxEVM 4.1.1 J1VIN Thisheaderisthepositiveconnectiontotheinputpowersupply.Thepowersupplymustbeconnected betweenJ1andJ3(GND).Theleadstotheinputsupplyshouldbetwistedandkeptasshortaspossible. Theinputvoltagemustbebetween2.3Vand5.5V. 4.1.2 J2S+/S– J2S+/S–arethesenseconnectionfortheinputoftheconverter.Connectavoltmeter,senseconnection ofapowersupply,oroscilloscopetothisheader. 4.1.3 J3GND Thisheaderisthereturnconnectiontotheinputpowersupply.ConnectthepowersupplybetweenJ3and J1(VIN).Theleadstotheinputsupplyshouldbetwistedandkeptasshortaspossible.Theinputvoltage mustbebetween2.3Vand5.5V. CapacitorC1compensatesforparasiticinductanceasaresultofthewiresfromthedcpowersupplyto theEVM.Itisnotrequiredinanactualapplicationcircuit. 4.1.4 J4VOUT Thisheaderisthepositiveoutputofthestep-downconverter.Theoutputvoltageofthedevicesinthe TPS6261x/TPS6262x/TPS6266xfamilieshavefixedoutputvoltages;refertothespecificdevicedata sheetfordetailedinformationonthedeviceoutputvoltage. 4.1.5 J5S+/S– J5S+/S–arethesenseconnectionfortheoutputoftheconverter.Connectavoltmeter,senseconnection ofanelectronicload,oroscilloscopetothisheader. 4.1.6 J6GND J6isthereturnconnectionoftheconverter.AloadcanbeconnectedbetweenJ6andJ4(VOUT). 4.2 Jumpers and Switches 4.2.1 JP1ENABLE Thisjumperenables/disablestheconverterontheEVM.PlacingashortingbarbetweenENABLEandON turnsontheconverter.PlacingashortingbarbetweenENABLEandOFFdisablestheconverter. 4.2.2 JP2MODE Thisjumperenables/disablesthepower-savingmodeunderlightloads.Placingashortingbarbetween MODEandPWMdisablesthepower-savingmode.Ifthepower-savemodeisdisabled,theconverter operatesinforcedPWMmodeovertheentireloadcurrentrange. PlacingashortingbarbetweenMODEandPSMenablesthepower-savingmode.Thedeviceoperatesin power-savingmodeunderlightloadconditions.Seethespecificdevicedatasheetfordetailedinformation. 4 TPS6261x/TPS6262x/TPS6266xEVM SLVU292A–April2010–RevisedApril2010 Copyright©2010,TexasInstrumentsIncorporated

www.ti.com TestConfiguration 5 Test Configuration 5.1 Hardware Setup Figure2illustratesatypicalhardwaretestconfiguration. Oscilloscope + J3 GND VOUT J4 PoweDr CSupply J2 SS-+ TPS6261x/2x/6xEVM-419 SS+- J5 Load - J1 VIN GND J6 EN MODE ON OFF PWM PWM JP1 JP2 Figure2.HardwareBoardConnection 5.2 Procedure FollowtheseprocedureswhenconfiguringtheEVMfortesting. CAUTION Many of the components on the TPS6261x/2x/6xEVM-419 are susceptible to damage by electrostatic discharge (ESD). Customers are advised to observe proper ESD handling precautions when unpacking and handling the EVM, including the use of a grounded wrist strap, bootstraps, or mats at an approved ESD workstation. An electrostatic smock and safety glasses should also be worn. 1. WorkatanESDworkstation.Makesurethatanywriststraps,bootstraps,ormatsareconnectedand referencetheusertoearthgroundbeforepowerisappliedtotheEVM.Electrostaticsmockandsafety glassesshouldalsobeworn. 2. ConnectadcpowersupplybetweenJ1andJ2ontheTPS626xxEVM.Notethattheinputvoltage shouldrangefrom2.3Vto5.5V.KeepthewiresfromtheinputpowersupplytoEVMasshortas possibleandtwisted. 3. ConnectadcvoltmeteroroscilloscopetotheoutputsenseconnectionoftheEVM. 4. AloadcanbeconnectedbetweenJ4andJ6ontheTPS626xxEVM. 5. Toenabletheconverter,connecttheshortingbaronJP1betweenENABLEandONonthe TPS626xxEVM. 6. TheTPS626xxEVMhasafeaturethatallowsuserstoswitchbetweenPower-SaveModeunderlight loadsandforcedPWMmode,withjumperJP2. SLVU292A–April2010–RevisedApril2010 TPS6261x/TPS6262x/TPS6266xEVM 5 Copyright©2010,TexasInstrumentsIncorporated

TPS626xxEVMTestData www.ti.com 6 TPS626xxEVM Test Data Figure5throughFigure11presenttypicalperformancegraphsfortheTPS626xxEVM.Actual performancedatacanbeaffectedbymeasurementtechniquesandenvironmentalvariables;therefore, thesecurvesarepresentedforreferenceandmaydifferfromactualresultsobtainedbysomeusers. 6.1 Efficiency Figure3throughFigure8showthetypicalefficiencyperformancefortheTPS626xxEVM. 100 88 VO= 1.2 V VI= 2.7 V 87 VI= 3.6 V L=Aircoil (0.5mH, DCR = 20 mW) 90 PFM/PWM Operation 86 VO= 1.2 V PFM/PWM Operation 85 80 84 70 83 VI= 3.6 V 82 % y - % 60 PFM/PWM Operation cy - 8801 L= muRata LQM21PN1R0 c 50 n n e 79 Efficie 40 PFM/PVWI M= 4O.2p eVration Forced VPIW= M3. 6O Vperation Effici 7778 L= muRata LQM21PN0R54 30 76 75 20 74 10 73 72 0 71 0.1 1 10 100 1000 1 10 100 1000 IO- Load Current - mA IO- Load Current - mA Figure3.TPS6262xEVMEfficiencyversusLoad Figure4.TPS6262xandTPS6262xEVMEfficiency Current(VIN=2.7V) versusLoadCurrent(VIN=3.6V) 100 100 90 VO= 1.8 V PFM/PVWI=M 2 O.7p Veration 90 VO= 1.2 V VI= 2.7 V PFM/PWM Operation 80 80 70 70 V = 3.6 V I % 60 PFM/PWM Operation % 60 VI= 3.6 V y - y - PFM/PWM Operation nc 50 VI = 4.2 V nc 50 e e ci PFM/PWM Operation ci Effi 40 Forced VPIW= M3. 6O Vperation Effi 40 VI = 4.2 V 30 30 PFM/PWM Operation VI= 3.6 V Forced PWM Operation 20 20 10 10 0 0 0.1 1 10 100 1000 0.1 1 10 100 1000 IO- Load Current - mA IO- Load Current - mA Figure5.TPS6261xEVMEfficiencyversusLoad Figure6.TPS6261xEVMEfficiencyversusLoad Current(V =1.8V) Current(V =1.2V) OUT OUT 6 TPS6261x/TPS6262x/TPS6266xEVM SLVU292A–April2010–RevisedApril2010 Copyright©2010,TexasInstrumentsIncorporated

www.ti.com TPS626xxEVMTestData 100 100 VO= 1.8 V (TPS62660) VO= 1.2 V VI= 2.7 V 90 90 PFM/PWM Operation 80 80 70 VI = 3.6 V 70 VI= 3.6 V PFM/PWM Operation PFM/PWM Operation % 60 % 60 y - V = 4.2 V VI= 2.7 V y - VI= 4.2 V nc 50 PFM/PWI M Operation PFM/PWM Operation nc 50 PFM/PWM Operation e e ci ci Effi 40 Effi 40 30 VI= 3.6 V 30 Forced PWM Operation 20 20 10 10 0 0 0.1 1 10 100 1000 0.1 1 10 100 1000 IO- Load Current - mA IO- Load Current - mA Figure7.TPS6266xEVMEfficiencyversusLoad Figure8.TPS6266xEVMEfficiencyversusLoad Current(V =1.8V) Current(V =1.2V) OUT OUT SLVU292A–April2010–RevisedApril2010 TPS6261x/TPS6262x/TPS6266xEVM 7 Copyright©2010,TexasInstrumentsIncorporated

TPS626xxEVMTestData www.ti.com 6.2 Start-Up Figure9throughFigure11showthetypicalstart-upperformancefordifferentTPS626xxEVMboards. v v di di 2 V/ VI= 3.6 V, 2 V/ VI= 3.6 V, N - VO= 1.8 V (TPS62660), N - VO= 1.82 V (TPS62620), E IO= 0 mA E IO= 0 mA v v di di V/ V/ 1 1 - - O O V V v v di di A/ A/ m m 0 0 0 0 2 2 - - IL MODE = Low IL MODE = Low t - Time - 20 µs/div t - Time - 20 µs/div Figure9.TPS62660EVMStartup Figure10.TPS62620EVMStart-Up v di V/ 2 VI= 3.6 V, N - VO= 1.8 V, E I = 0 mA O v di V/ 1 - O V v di A/ m 0 0 2 - L MODE = Low I t - Time - 20 µs/div Figure11.TPS6261xEVMStart-Up 8 TPS6261x/TPS6262x/TPS6266xEVM SLVU292A–April2010–RevisedApril2010 Copyright©2010,TexasInstrumentsIncorporated

www.ti.com TPS626xxEVMTestData 6.3 Output Voltage Ripple (Power-Save Mode) Figure12illustratesthetypicaloutputvoltageripplefortheTPS626xxinpower-savemode. et s Off V 8 1. v - VI= 3.6 V, VO= 1.8 V, V/di IO= 40 mA div m V/ - 10 O de - 2 V o N W S v di A/ m 0 0 2 - L MODE = Low I t - Time - 250 ns/div Figure12.Power-SaveModeRipple 6.4 Output Voltage Ripple (PWM) Figure13illustratesthetypicaloutputvoltageripplefortheTPS626xxinPWMmode. et s Off VI= 3.6 V, VO= 1.8 V, IO= 150 mA V 8 1. v - di V/ v m di 0 V/ V- 1O e - 2 d o N W S v di A/ m 0 0 2 - MODE = High L I t - Time - 50 ns/div Figure13.PWMOutputRipple SLVU292A–April2010–RevisedApril2010 TPS6261x/TPS6262x/TPS6266xEVM 9 Copyright©2010,TexasInstrumentsIncorporated

TPS626xxEVMAssemblyDrawingsandLayout www.ti.com 7 TPS626xxEVM Assembly Drawings and Layout Figure14throughFigure16 showthedesignoftheshowthedesignoftheTPS6261x/2x/6xEVM-419 printedcircuitboards.TheEVMhasbeendesignedusingatwo-layer,1-ouncecopper-cladPCBwithall componentsinanactiveareaonthetopsideoftheboard.MovingcomponentstobothsidesofthePCB orusingadditionalinternallayerscanofferadditionalsizereductionforspace-constrainedsystems. NOTE: Boardlayoutsarenottoscale.Thesefiguresareintendedtoshowhowtheboardislaid out;theyarenotintendedtobeusedformanufacturingTPS6261x/2x/6xEVM-419PCBs. NotetheconnectionoftheTPS626xxfeedback(FB)pin.Itisrecommendedtoconnectthe FBpindirectlytotheinductor,notdirectlyontheV connectionoftheoutputcapacitor.The OUT connectiontotheinductorisrecommendedbecauseitprovidesbettertransientresponse performance. T EXAS I NSTRUMENTS Figure14.TPS626xxEVMComponentPlacement(TopView) 10 TPS6261x/TPS6262x/TPS6266xEVM SLVU292A–April2010–RevisedApril2010 Copyright©2010,TexasInstrumentsIncorporated

www.ti.com TPS626xxEVMAssemblyDrawingsandLayout Figure15.TPS626xxEVMTop-SideCopper(TopView) SLVU292A–April2010–RevisedApril2010 TPS6261x/TPS6262x/TPS6266xEVM 11 Copyright©2010,TexasInstrumentsIncorporated

TPS626xxEVMAssemblyDrawingsandLayout www.ti.com Figure16.TPS626xxEVMBottom-SideCopper(BottomView) 12 TPS6261x/TPS6262x/TPS6266xEVM SLVU292A–April2010–RevisedApril2010 Copyright©2010,TexasInstrumentsIncorporated

www.ti.com BillofMaterials 8 Bill of Materials Table3liststhebillofmaterialsfortheTPS626xxEVM. Table3.TPS626xxEVM-419BillofMaterials EVMDeviceOption:Count -001 -002 -003 -004 -005 -006 RefDes Value Description Size PartNumber Capacitor,Tantalum,6.3V,18 1 1 1 1 1 1 C1 150µF 6032 6TPE150MIC2 mΩ,20% Capacitor,Ceramic,6.3V, 2 2 2 2 2 2 C2,C3* 4.7µF 0402 GRM155R60J475ME87 X5R,20% Inductor,SMT,800mA,190 0 0 0 0 1 0 L1 1.0µH 2012 LQM21PN1R0MC0 mΩ Inductor,SMT,800mA,190 1 1 1 1 0 1 L1 1.0µH 2012 LQM21PN1R0NGR mΩ IC,500mA,6-MHz 1 0 0 0 0 0 U1 TPS62621YFF SynchronousStep-Down WCSP-6 TPS62621YFF Converter IC,500mA,6-MHz 0 1 0 0 0 0 U1 TPS62622YFF SynchronousStep-Down WCSP-6 TPS62622YFF Converter IC,500mA,6-MHz 0 0 1 0 0 0 U1 TPS62624YFF SynchronousStep-Down WCSP-6 TPS62624YFF Converter IC,500mA,6-MHz 0 0 0 1 0 0 U1 TPS62625YFF SynchronousStep-Down WCSP-6 TPS62625YFF Converter IC,350mA,6-MHz 0 0 0 0 1 0 U1 TPS62615YFF SynchronousStep-Down WCSP-6 TPS62615YFF Converter IC,1000mA,6-MHz 0 0 0 0 0 1 U1 TPS62660YFF SynchronousStep-Down WCSP-6 TPS62660YFF Converter 9 Marking Information Table4providesthemarkinginformationforthisEVM. Table4.MarkingInformation AssemblyNumber MarkingText HPA419-001 TPS62621EVM-419 HPA419-002 TPS62622EVM-419 HPA419-003 TPS62624EVM-419 HPA419-004 TPS62625EVM-419 HPA419-005 TPS62615EVM-419 HPA419-006 TPS62660EVM-419 SLVU292A–April2010–RevisedApril2010 TPS6261x/TPS6262x/TPS6266xEVM 13 Copyright©2010,TexasInstrumentsIncorporated

EvaluationBoard/KitImportantNotice TexasInstruments(TI)providestheenclosedproduct(s)underthefollowingconditions: Thisevaluationboard/kitisintendedforuseforENGINEERINGDEVELOPMENT,DEMONSTRATION,OREVALUATION PURPOSESONLYandisnotconsideredbyTItobeafinishedend-productfitforgeneralconsumeruse.Personshandlingthe product(s)musthaveelectronicstrainingandobservegoodengineeringpracticestandards.Assuch,thegoodsbeingprovidedare notintendedtobecompleteintermsofrequireddesign-,marketing-,and/ormanufacturing-relatedprotectiveconsiderations, includingproductsafetyandenvironmentalmeasurestypicallyfoundinendproductsthatincorporatesuchsemiconductor componentsorcircuitboards.Thisevaluationboard/kitdoesnotfallwithinthescopeoftheEuropeanUniondirectivesregarding electromagneticcompatibility,restrictedsubstances(RoHS),recycling(WEEE),FCC,CEorUL,andthereforemaynotmeetthe technicalrequirementsofthesedirectivesorotherrelateddirectives. Shouldthisevaluationboard/kitnotmeetthespecificationsindicatedintheUser’sGuide,theboard/kitmaybereturnedwithin30 daysfromthedateofdeliveryforafullrefund.THEFOREGOINGWARRANTYISTHEEXCLUSIVEWARRANTYMADEBY SELLERTOBUYERANDISINLIEUOFALLOTHERWARRANTIES,EXPRESSED,IMPLIED,ORSTATUTORY,INCLUDING ANYWARRANTYOFMERCHANTABILITYORFITNESSFORANYPARTICULARPURPOSE. Theuserassumesallresponsibilityandliabilityforproperandsafehandlingofthegoods.Further,theuserindemnifiesTIfromall claimsarisingfromthehandlingoruseofthegoods.Duetotheopenconstructionoftheproduct,itistheuser’sresponsibilityto takeanyandallappropriateprecautionswithregardtoelectrostaticdischarge. EXCEPTTOTHEEXTENTOFTHEINDEMNITYSETFORTHABOVE,NEITHERPARTYSHALLBELIABLETOTHEOTHER FORANYINDIRECT,SPECIAL,INCIDENTAL,ORCONSEQUENTIALDAMAGES. TIcurrentlydealswithavarietyofcustomersforproducts,andthereforeourarrangementwiththeuserisnotexclusive. TIassumesnoliabilityforapplicationsassistance,customerproductdesign,softwareperformance,orinfringementof patentsorservicesdescribedherein. PleasereadtheUser’sGuideand,specifically,theWarningsandRestrictionsnoticeintheUser’sGuidepriortohandlingthe product.Thisnoticecontainsimportantsafetyinformationabouttemperaturesandvoltages.ForadditionalinformationonTI’s environmentaland/orsafetyprograms,pleasecontacttheTIapplicationengineerorvisitwww.ti.com/esh. NolicenseisgrantedunderanypatentrightorotherintellectualpropertyrightofTIcoveringorrelatingtoanymachine,process,or combinationinwhichsuchTIproductsorservicesmightbeorareused. FCCWarning Thisevaluationboard/kitisintendedforuseforENGINEERINGDEVELOPMENT,DEMONSTRATION,OREVALUATION PURPOSESONLYandisnotconsideredbyTItobeafinishedend-productfitforgeneralconsumeruse.Itgenerates,uses,and canradiateradiofrequencyenergyandhasnotbeentestedforcompliancewiththelimitsofcomputingdevicespursuanttopart15 ofFCCrules,whicharedesignedtoprovidereasonableprotectionagainstradiofrequencyinterference.Operationofthis equipmentinotherenvironmentsmaycauseinterferencewithradiocommunications,inwhichcasetheuserathisownexpense willberequiredtotakewhatevermeasuresmayberequiredtocorrectthisinterference. EVMWarningsandRestrictions ItisimportanttooperatethisEVMwithintheinputvoltagerangeof2.3Vto5.5Vandtheoutputvoltagerangeof1.2Vto1.8V. Exceedingthespecifiedinputrangemaycauseunexpectedoperationand/orirreversibledamagetotheEVM.Ifthereare questionsconcerningtheinputrange,pleasecontactaTIfieldrepresentativepriortoconnectingtheinputpower. Applyingloadsoutsideofthespecifiedoutputrangemayresultinunintendedoperationand/orpossiblepermanentdamagetothe EVM.PleaseconsulttheEVMUser'sGuidepriortoconnectinganyloadtotheEVMoutput.Ifthereisuncertaintyastotheload specification,pleasecontactaTIfieldrepresentative. Duringnormaloperation,somecircuitcomponentsmayhavecasetemperaturesgreaterthan+60°C.TheEVMisdesignedto operateproperlywithcertaincomponentsabove+60°Caslongastheinputandoutputrangesaremaintained.Thesecomponents includebutarenotlimitedtolinearregulators,switchingtransistors,passtransistors,andcurrentsenseresistors.Thesetypesof devicescanbeidentifiedusingtheEVMschematiclocatedintheEVMUser'sGuide.Whenplacingmeasurementprobesnear thesedevicesduringoperation,pleasebeawarethatthesedevicesmaybeverywarmtothetouch. MailingAddress:TexasInstruments,PostOfficeBox655303,Dallas,Texas75265 Copyright©2010,TexasInstrumentsIncorporated

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