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| ts30111 final datasheet rev 1.0 june 2, 2015 1 of 21 semtech ts30111 triune products high efciency 700ma current-mode synchronous buck dc/dc regulator, 1mhz features ?f fixedfoutputfvoltagefchoices:f1.5v,f1.8v,f2.5v,f3.3v,fandf5vf adjustablefversionfoutputfvoltagefrange:f0.8vftof5vf ?f widefinputfvoltagefrangef4.5vftof16vf(18vfabsfmax) ?f 1mhzf+/-f10%ffxedfswitchingffrequencyf ?f continuousfoutputfcurrent:f700ma ?f highfefciencyfCfupftof90%f ?f currentfmodefpwmfcontrolfwithfpfmfmodefforfimprovedf lightfloadfefciency ?f voltagefsupervisorfforfvoutfreportedfatfthefpgfpin ?f inputfsupplyfunderfvoltageflockout ?f softfstartfforfcontrolledfstartupfwithfnofovershoot ?f fullfprotectionfforfover-current,fover-temperature,fandf voutfover-voltagef ?f lessfthanf10uafinfstandbyfmodef ?f lowfexternalfcomponentfcountf summary specifcation ?f junctionfoperatingftemperatureff-40fcfftof125fc ?f packagedfinfaf16pinfqfnf(3x3) description thefts30111fisfafdc/dcfsynchronousfswitchingfregulatorfwithf fullyfintegratedfpowerfswitches,finternalfcompensation,fandf fullffaultfprotection.ffthefswitchingffrequencyfoff1mhzfenablesf thefusefoffsmallfflterfcomponentsfresultingfinfminimalfboardf spacefandfreducedfbomfcosts. thefts30111futilizesfcurrentfmodeffeedbackfinfnormalf regulationfpwmfmode.ffwhenfthefregulatorfisfplacedfinf standbyf(enfisflow),fthefdevicefdrawsflessfthanf10uafquiescentf current. thefts30111fintegratesfafwidefrangefoffprotectionfcircuitryf includingfinputfsupplyfunder-voltageflockout,foutputfvoltagef softfstart,fcurrentflimit,fandfthermalfshutdown. thefts30111fincludesfsupervisoryfreportingfthroughfthef pgf(powerfgood)fopenfdrainfoutputftofinterfacefotherf componentsfinfthefsystem.ff applications ?f on-cardfswitchingfregulators ?f set-topfbox,fdvd,flcd,fledfsupply ?f industrialfpowerfsupplies typical applications ts30111 vou t adjustable output pg nd vsw vcc fb gn d bst vcc pg pg r top r bot 10 kohm (optional) vout en en c bypass c bst l out c out ts3011 1 vout fixed output en p gn d vsw vcc fb gnd vcc en pg pg 10 kohm (optional) vout bst www.semtech.com
ts30111 final datasheet rev 1.0 june 2, 2015 2 of 21 semtech pinout pin description pin # pin name pin function description 1 vsw switchingfvoltagefnode connectedftof3.3uhf(typical)finductor 2 vcc inputfvoltage inputfvoltagef 3 vcc inputfvoltage inputfvoltagef 4 gnd gnd primaryfgroundfforfthefmajorityfoffthefdevicefexceptf f theflow-sidefpowerffet 5 fb feedbackfinputf regulatorffbfvoltage.ffconnectsftofv out fforffxedfmodef f andfthefoutputfresistorfdividerfforfadjustablefmode 6 nc nofconnect notfconnected 7 nc nofconnect notfconnected 8 pg powerfgoodfoutput open-drainfoutputf 9 en enablefinput abovef2.2vfthefdevicefisfenabled.ffgndfthefpinftofputf f devicefinfstandbyfmode.ffincludesfinternalfpull-up 10 bst bootstrapfcapacitor bootstrapfcapacitorfforfthefhigh-sideffetfgatefdriver.ff f 22nffceramicfcapacitorffromfbstfpinftofvswfpin 11 vcc inputfvoltage inputfvoltage 12 vsw switchingfvoltagefnode connectedftof3.3uhf(typical)finductor 13 vsw switchingfvoltagefnode connectedftof3.3uhf(typical)finductor 14 pgnd powerfgnd gndfsupplyfforfinternalflow-sideffet/integratedfdiode 15 pgnd powerfgnd gndfsupplyfforfinternalflow-sideffet/integratedfdiode 16 vsw switchingfvoltagefnode connectedftof3.3uhf(typical)finductor vcc vcc gnd vsw vcc bst en vsw pgnd pgnd vsw vsw nc nc fb p g ts30111 ` pin 1 figure 1: 16 lead 3x3 qfn, top view www.semtech.com ts30111 final datasheet rev 1.0 june 2, 2015 3 of 21 semtech functional block diagram figure 2: ts30111 block diagram vcc over current protection gate drive gate drive bootstrap voltage vcc gate drive control fb vsw vref & softstart oscillator ramp generator comparator error amp gnd under voltage protection monitor & control thermal protection over & under voltage protection vcc fb vcc bst vout s en pgnd pg c bst c out l out r top r bot pfm mode comparator vref 4.2v compensatio n network vcc c bypass vin figure 3: monitor & control logic functionality tsd filter v cc-u v filter internal por filter filter en v out-uv filter pg enable regulator v out-ov filter i ocd ocd_filter tristat e vsw output www.semtech.com ts30111 final datasheet rev 1.0 june 2, 2015 4 of 21 semtech absolute maximum ratings overfoperatingffreeCairftemperaturefrangefunlessfotherwisefnoted (1,f2) parameter value unit vcc -0.3ftof18 v bst -0.3ftof(vcc+6) v vsw -1ftof18 v en,fpg,ffb -0.3ftof6 v electrostaticfdischargefCfhumanfbodyfmodel +/-2k v electrostaticfdischargefCfchargefdevicefmodel +/-500 v leadftemperaturef(soldering,f10fseconds) 260 c notes: (1) stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under recommended operating con - ditions is not implied. exposure to absoluteCmaximumCrated conditions for extended periods may affect device reliability. (2) all voltage values are with respect to network ground terminal. thermal characteristics symbol parameter value unit ja thermalfresistancefjunctionftofairf(notef1) 50 c/w t stg storageftemperaturefrange -65ftof150 c t jfmax maximumfjunctionftemperature 150 c t j operatingfjunctionftemperaturefrange -40ftof125 c note 1: assumes 16ld 3x3 qfn with hi-k jedec board and 13.5 inch2 of 1 oz cu recommended operating conditions symbol parameter min typ max unit vcc inputfoperatingfvoltage 4.5 12 16 v c bst bootstrapfcapacitor 17.6 22 26.4 nf l out outputffilterfinductorftypicalfvaluef(notef1) 3.3 uh c out outputffilterfcapacitorftypicalfvaluef(notef2) 22 uf c out-esr outputffilterfcapacitorfesr 2 100 m c bypass inputfsupplyfbypassfcapacitorftypicalfvaluef(notef3) 8 10 uf note 1: for best performance, an inductor with a saturation current rating higher than the maximum vout load requirement plus the inductor current ripple. note 2: for best performance, a low esr ceramic capacitor should be used. note 3: for best performance, a low esr ceramic capacitor should be used. if c bypass is not a low esr ceramic capacitor, a 0.1uf ceramic capacitor should be added in parallel to c bypass . www.semtech.com ts30111 final datasheet rev 1.0 june 2, 2015 5 of 21 semtech electrical characteristics electricalfcharacteristics,ft j f=f-40cftof125c,fvccf=f12vf(unlessfotherwisefnoted) symbol parameter condition min typ max unit vcc supply voltage vcc inputfsupplyfvoltage 4.5 16 v i cc-norm quiescentfcurrent normalfmode vccf=f12v,fi load f=f0a 5.2 ma i cc-noswitch quiescentfcurrentf f normalfmodefCfnon-switching vcc=12v,fi load =0a,fnon-switching 2.3 ma i cc-stby quiescentfcurrent standbyfmode vccf=f12v,fv en f=f0v 5 10 ua vcc under voltage lockout vcc -uv inputfsupplyfunderfvoltagef f threshold vccfincreasing 4.3 v vcc -uv_hyst inputfsupplyfunderfvoltagef f thresholdfhysteresis 650 mv osc f osc oscillatorffrequency 1 mhzf pg open drain output t pg pgfreleaseftimer 10 ms i oh-pg high-levelfoutputfleakage v pg =5v 0.5 ua v ol-pg low-levelfoutputfvoltage i pg f=f-0.3ma 0.01 v en/nlp input voltage thresholds v ih-en highflevelfinputfvoltage 2.2 v v il-en lowflevelfinputfvoltage 0.8 v v hyst-en inputfhysteresis 480 mv i in-en enfinputfleakage v en =5v 3.5 ua v en =0v -1.5 ua thermal shutdown tsd thermalfshutdownfjunctionf temperature note:fnotftestedfinfproduction 150 170 c tsd hyst tsdfhysteresis note:fnotftestedfinfproduction 10 c www.semtech.com ts30111 final datasheet rev 1.0 june 2, 2015 6 of 21 semtech regulator characteristics electricalfcharacteristics,ft j f=f-40cftof125c,fvccf=f12vf(unlessfotherwisefnoted) symbol parameter condition min typ max unit switch mode regulator: l=3.3uh and c=22uf v out-pwm outputfvoltageferrorfinfpwmfmode i load f=700fma 2% v v out-pfm outputfvoltageftolerancefinfpfmfmode i load fff=f0a v out f+f1% v r dson highfsidefswitchfonfresistance i vsw f=f-700maf(notef1) 240 m lowfsidefswitchfonfresistance i vsw f=f700maf(notef1) 160 m i out outputfcurrent 700 ma i ocd overfcurrentfdetect hsfswitchfcurrent 1.2 a fb th feedbackfreferencef (adjustablefmode) (notef3) 0.8 v fb th-tol feedbackfreferencef f absoluteftolerance (notef3) 1.5 % t ss softfstartframpftime 4 ms fb th-pfm pfmfmodeffbfcomparatorfthreshold v out f+f1% v v out-uv voutfunderfvoltagefthreshold 93%fv out v out-uv_hyst voutfunderfvoltagefhysteresis 1.5%fv out v out-ov voutfoverfvoltagefthreshold 103%fv out v out-ov_hyst voutfoverfvoltagefhysteresis 1%fv out duty max maxfdutyfcycle (notef2) 95% 97% 99% note 1: r dson is characterized at 600ma and tested at lower current in production. note 2: regulator vsw pin is forced off for 240ns every 8 cycles to ensure the bst cap is replenished. note 3: for the adjustable version, the ratio of vcc/v out cannot exceed 16. note 4: based on over current detect testing www.semtech.com ts30111 final datasheet rev 1.0 june 2, 2015 7 of 21 semtech functional description thefts30111fcurrent-modefsynchronousfstep-downfpowerf supplyfproductfisfidealfforfusefinfthefcommercial,findustrial,f andfautomotivefmarketfsegments.ffitfincludesffexibilityftofbef usedfforfafwidefrangefoffoutputfvoltagesfandfisfoptimizedfforf highfefciencyfpowerfconversionfwithflowfrdsonfintegratedf synchronousfswitches.faf1mhzfinternalfswitchingffrequencyf facilitatesflowfcostflcfflterfcombinations.ffadditionally,fthef fxedfoutputfversionsfenablefafminimumfexternalfcomponentf countftofprovidefafcompletefregulationfsolutionfwithfonlyf4f externalfcomponents:fanfinputfbypassfcapacitor,fanfinductor,f anfoutputfcapacitor,fandfthefbootstrapfcapacitor.fthefregulatorf automaticallyftransitionsfbetweenfpfmfandfpwmfmodeftof maximizefefciencyfforfthefloadfdemand.f thefts30111fwasfdesignedftofprovidefthesefsystemfbenefts: ?f reducedfboardfrealfestate ?f lowerfsystemfcost f ? lowerfcostfinductor f ? lowfexternalfpartsfcount ?f easefoffdesign f ? billfoffmaterialsfandfsuggestedfboardflayoutfprovided f ? powerfgoodfoutput f ? integratedfcompensationfnetwork f ? widefinputfvoltagefrange ?f robustfsolution f ? overfcurrent,foverfvoltagefandfoverftemperaturefpro - tection detailed pin description unregulated input, vcc thisfterminalfisfthefunregulatedfinputfvoltagefsourcefforfthef ic.ffitfisfrecommendedfthatfaf10uffbypassfcapacitorfbefplacedf closeftofthefdevicefforfbestfperformance.ffsincefthisfisfthefmainf supplyfforfthefic,fgoodflayoutfpracticesfneedftofbeffollowedfforf thisfconnection. bootstrap control, bst thisfterminalfwillfprovidefthefbootstrapfvoltagefrequiredfforf thefupperfinternalfnmosfswitchfoffthefbuckfregulator.fanf externalfceramicfcapacitorfplacedfbetweenfthefbstfinputf terminalfandfthefvswfpinfwillfprovidefthefnecessaryfvoltagef forfthefupperfswitch.finfnormalfoperationfthefcapacitorfisf re-chargedfonfeveryflowfsidefsynchronousfswitchingfaction.f infthefcasefoffwherefthefswitchfmodefapproachesf100%fdutyf cyclefforfthefhighfsideffet,fthefdevicefwillfautomaticallyfreducef thefdutyfcyclefswitchftofafminimumfofftimefonfeveryf8thfcyclef tofallowfthisfcapacitorftofre-charge.f sense feedback, fb thisfisfthefinputfterminalfforfthefoutputfvoltageffeedback.ff forftheffxedfmodefversions,fthisfshouldfbefhookedfdirectlyf tofv out .ffthefconnectionfonfthefpcbfshouldfbefkeptfasfshortf asfpossible,fandfshouldfbefmadefasfclosefasfpossibleftofthef capacitor.fftheftracefshouldfnotfbefsharedfwithfanyfotherf connection.f(figuref23) forfadjustablefmodefversions,fthisfshouldfbefconnectedftof thefexternalfresistorfdivider.ftofchoosefthefresistors,fusefthef followingfequation:ff fv out f=f0.8f(1f+fr top /r bot ) thefinputftoftheffbfpinfisfhighfimpedance,fandfinputfcurrentf shouldfbeflessfthanf100na.ffasfafresult,fgoodflayoutfpracticesf arefrequiredfforftheffeedbackfresistorsfandffeedbackftraces.f whenfusingfthefadjustablefversion,ftheffeedbackftracefshouldf befkeptfasfshortfasfpossiblefandfminimumfwidthftofreducef strayfcapacitancefandftofreducefthefinjectionfoffnoise. forfthefadjustablefversion,fthefratiofoffvcc/v out fcannotfexceedf 16. switching output, vsw thisfisfthefswitchingfnodefoffthefregulator.ffitfshouldfbef connectedfdirectlyftofthef3.3uhfinductorfwithfafwide,fshortf tracefandftofonefendfoffthefbootstrapfcapacitor.ffitfisfswitchingf betweenfvccfandfpgndfatfthefswitchingffrequency.ff ground, gnd thisfgroundfisfusedfforfthefmajorityfoffthefdevicefincludingfthef analogfreference,fcontrolfloop,fandfotherfcircuits.ff power ground, pgnd thisfisfafseparatefgroundfconnectionfusedfforftheflowfsidef synchronousfswitchftofisolatefswitchingfnoiseffromfthefrestfoff thefdevice.ff(figuref23) enable, en thisfisfthefinputfterminalftofactivatefthefregulator.ffthefinputf thresholdfisfttl/cmosfcompatible.fffitfalsofhasfanfinternalfpull- upftofensurefafstablefstatefiffthefpinfisfdisconnected. www.semtech.com ts30111 final datasheet rev 1.0 june 2, 2015 8 of 21 semtech power good output, pg thisfisfanfopenfdrain,factiveflowfoutput.ffthefswitchedfmodef outputfvoltagefisfmonitoredfandfthefpgflinefwillfremainflowf untilfthefoutputfvoltagefreachesfthefv out-uv fthreshold.fffoncef thefinternalfcomparatorfdetectsfthefoutputfvoltagefisfabovef thefdesiredfthreshold,fanfinternalfdelayftimerfisfactivatedfandf thefpgflinefisfde-assertedftofhighfoncefthisfdelayftimerfexpires.ff infthefeventfthefoutputfvoltagefdecreasesfbelowfvout-uv,fthef pgflinefwillfbefassertedflowfandfremainflowfuntilfthefoutputf risesfabovefv out-uv fandfthefdelayftimerftimesfout.ffseeffiguref2f forfthefcircuitfschematicfforfthefpgfsignal. internal protection details internal current limit thefcurrentfthroughfthefhighfsideffetfisfsensedfonfafcyclef byfcyclefbasisfandfiffcurrentflimitfisfreached,fitfwillfabbreviatef thefcycle.ffinfaddition,fthefdevicefsensesftheffbfpinftofidentifyf hardfshortfconditionsfandfwillfdirectfthefvswfoutputftofskipf4f cyclesfiffcurrentflimitfoccursfwhenffbfisflow.fthisfallowsfcurrentf builtfupfinfthefinductorfduringfthefminimumfonftimeftofdecayf sufciently.ffcurrentflimitfisfalwaysfactivefwhenfthefregulatorf isfenabled.ffsoftfstartfensuresfcurrentflimitfdoesfnotfpreventf regulatorfstartup.ff underfextendedfoverfcurrentfconditionsf(suchfasfafshort),f thefdevicefwillfautomaticallyfdisable.ffoncefthefoverfcurrentf conditionfisfremoved,fthefdevicefreturnsftofnormalfoperationf automatically.ff(alternatelyftheffactoryfcanfconfgurefthef devicesfnvmftofshutdownfthefregulatorfiffanfextendedfoverf currentfeventfisfdetectedfandfrequirefaftogglefoffthefenablef pinftofreturnfthefdeviceftofnormalfoperation.) thermal shutdown ifftheftemperaturefoffthefdiefexceedsf170cf(typical),fthefvswf outputsfwillftri-stateftofprotectfthefdeviceffromfdamage.ffthef pgfandfallfotherfprotectionfcircuitryfwillfstayfactiveftofinformf thefsystemfofftheffailurefmode.foncefthefdevicefcoolsftof160cf (typical),fthefdevicefwillfstartfupfagain,ffollowingfthefnormalf softfstartfsequence.fiffthefdevicefreachesf170c,fthefshutdown/ restartfsequencefwillfrepeat. reference soft start thefreferencefinfthisfdevicefisframpedfatfafratefoff4msftof preventfthefoutputffromfovershootfduringfstartup.ffthisframpf restartsfwheneverftherefisfafrisingfedgefsensedfonfthefenablef pin.ffthisfoccursfinfbothftheffxedfandfadjustablefversions.ff duringfthefsoftfstartframp,fcurrentflimitfisfstillfactive,fandfwillf stillfprotectfthefdevicefinfcasefoffafshortfonfthefoutput.f output overvoltage iffthefoutputfoffthefregulatorfexceedsf103%foffthefregulationf voltage,fthefvswfoutputsfwillftri-stateftofprotectfthefdevicef fromfdamage.fffthisfcheckfoccursfatfthefstartfoffeachfswitchingf cycle.ffiffitfoccursfduringfthefmiddlefoffafcycle,fthefswitchingf forfthatfcyclefwillfcomplete,fandfthefvswfoutputsfwillftri-statef atfthefbeginningfoffthefnextfcycle.f vcc under-voltage lockout thefdevicefisfheldfinfthefoffstatefuntilfvccfreachesf4.3vf (typical).ftherefisfaf300mvfhysteresisfonfthisfinput,fwhichf requiresfthefinputftoffallfbelowf4vf(typical)fbeforefthefdevicef willfdisable.f www.semtech.com ts30111 final datasheet rev 1.0 june 2, 2015 9 of 21 semtech 10 ts30111 version 1. 0 specifications subject to change www.triunesystems.com copyright ? 2012, triune systems, llc typica l performance characteristics 5v/div 1 v/div 500ma /div 50m v/div 1a /div 100m v/div 5v /div 50m v/div typical performance characteristics vccf=f12v,fc out f=f2fxf22uff(unlessfotherwisefnoted) figure 4. startup response figure 6. 100ma to 1a load step (v cc =12v, v out =3.3v) figure 5. 100ma to 1a load step (v cc =12v, v out =1.8v) figure 7. line transient response (v cc =12v, v out =3.3v) www.semtech.com ts30111 final datasheet rev 1.0 june 2, 2015 10 of 21 semtech 11 ts30111 version 1. 0 specifications subject to change www.triunesystems.com copyright ? 2012, triune systems, llc typica l performance characteristics vcc=6v vcc=12v vcc=12v typical performance characteristics vccf=f12v,fc out f=f2fxf22uff(unlessfotherwisefnoted) figure 8. load regulation figure 10. efciency vs. output current (v out =1.8v) figure 12. efciency vs. output current (v out = 5v) figure 9. line regulation (i out =1a) figure11. efciency vs. output current (v out =3.3v) figure 13. efciency vs. input voltage (v out = 3.3v) www.semtech.com ts30111 final datasheet rev 1.0 june 2, 2015 11 of 21 semtech 12 ts30111 version 1. 0 specifications subject to change www.triunesystems.com copyright ? 2012, triune systems, llc figure 12 . efficiency vs. output urrent ( v out = 5 v) figure 13 . efficiency vs. input voltage (v out = 3.3v) typica l performance characteristics 4.0 4.5 5.0 5.5 6.0 6.5 7.0 50 0 50 100 150 standby current (ua) iout=300ma iout=30ma 3.280 3.285 3.290 3.295 3.300 3.305 3.310 50 0 50 100 150 output voltage (v) 0.95 0.97 0.99 1.01 1.03 1.05 50 0 50 100 150 oscillator frequency (mhz) 4.00 4.50 5.00 5.50 6.00 50 0 50 100 150 quiscent current (ma) 1.84 1.86 1.88 1.9 1.92 1.94 1.96 1.98 2 50 0 50 100 150 input urrent no sw (ma) temperature (c) temperature (c) temperature (c) temperature (c) temperature (c) typical performance characteristics vccf=f12v,fc out f=f2fxf22uff(unlessfotherwisefnoted) figure 14. standby current vs. input voltage figure 16. output voltage vs. temperature figure 18. quiescent current vs. temperature (no load) figure 15. standby current vs. temperature figure 17. oscillator frequency vs. temperature (i out =300ma) figure 19. input current vs. temperature (no load, no switching) www.semtech.com ts30111 final datasheet rev 1.0 june 2, 2015 12 of 21 semtech pcb layout forfproperfoperationfandfminimumfemi,fcarefmustfbeftakenf duringfpcbflayout.fanfimproperflayoutfcanfleadftofissuesf suchfasfpoorfstabilityfandfregulation,fnoisefsensitivityfandf increasedfemifradiation.f(fguref23)ffthefmainfguidelinesfaref theffollowing: ?f provideflowfinductivefandfresistivefpathsfforfloopsfwithf highfdi/dt, ?f provideflowfcapacitivefpathsfwithfrespectftofallfthefotherf nodesfforftracesfwithfhighfdi/dt, ?f sensitivefnodesfnotfassignedftofpowerftransmissionf shouldfbefreferencedftofthefanalogfsignalfgroundf(gnd)f andfbefalwaysfseparatedffromfthefpowerfgroundf(pgnd). thefnegativefendsfoffc bypass ,fc out fandfthefschottkyfdiodefd catch f (optional)fshouldfbefplacedfcloseftofeachfotherfandfconnectedf usingfafwideftrace.fviasfmustfbefusedftofconnectfthefpgndf nodeftofthefgroundfplane.fthefpgndfnodefmustfbefplacedfasf closefasfpossibleftofthefts30111fpgndfpinsftofavoidfadditionalf voltagefdropfinftraces. thefbypassfcapacitorfc bypass f(optionallyfparalleledftofaf0.1ff capacitor)fmustfbefplacedfcloseftofthefvccfpinsfoffts30111. thefinductorfmustfbefplacedfcloseftofthefvswfpinsfandf connectedfdirectlyftofc out finforderftofminimizefthefareaf betweenfthefvswfpin,fthefinductor,fthefc out fcapacitorfandfthef pgndfpins.ftheftracefareafandflengthfoffthefswitchingfnodesf vswfandfbstfshouldfbefminimized. forfthefadjustablefoutputfvoltagefversionfoffthefts30111,ff feedbackfresistorsfr bot fandfr top farefrequiredfforfvoutfsettingsf greaterfthanf0.8vfandfshouldfbefplacedfcloseftofthefts30111f inforderftofkeepftheftracesfoffthefsensitivefnodeffbfasfshortf asfpossiblefandfawayffromfswitchingfsignals.fr bot fshouldfbef connectedftofthefanalogfgroundfpinf(gnd)fdirectlyfandfshouldf neverfbefconnectedftofthefgroundfplane.fthefanalogfgroundf tracef(gnd)fshouldfbefconnectedfinfonlyfonefpointftofthef powerfgroundf(pgnd).fafgoodfconnectionfpointfisfunderfthef ts30111fpackageftofthefexposedfthermalfpadfandfviasfwhichf arefconnectedftofpgnd.fr top fwillfbefconnectedftofthefv out f nodefusingfaftracefthatfendsfcloseftofthefactualfload. forffxedfoutputfvoltagefversionsfoffthefts30111,fr botf andfr topf arefnotfrequiredfandftheffbfpinfshouldfbefconnectedfdirectlyf tofthefv out . typical application schematic afminimalfschematicfsuitablefforfmostfapplicationsfisfshownfonfpagef1.fffiguref22fincludesfoptionalfcomponentsfthatfmayfbef consideredftofaddressfspecifcfissuesfasflistedfinfthefexternalfcomponentfselectionfsection. figure 20: ts30111 application schematic ts30111 v ou t 2.5v pgnd vsw vcc fb gn d bst vc c pg pg r top 17.8k r bot 10k r pup 10k (optional) vout en en c c bypass 10uf 35v c bst 22nf l out 3.3uh c out1 22uf 10v bypass2 0.1uf d catch (optional) (optional) www.semtech.com ts30111 final datasheet rev 1.0 june 2, 2015 13 of 21 semtech thefexposedfthermalfpadfmustfbefsolderedftofthefpcbfforfmechanicalfreliabilityfandftofachievefgoodfpowerfdissipation.fviasfmustf befplacedfunderfthefpadftoftransferfthefheatftofthefgroundfplane. c out c out l out c bypass d catch c byp r bot r top c bst r plp pgnd vcc vout vias to groun d plan e vias to groun d plane analog ground (gnd ) switching node vcc vcc gnd vsw vcc bst en vsw pgnd pgnd vs w vs w n c nc fb pg figure 21: ts30111 pcb layout, top view external component bill of materials designator function description suggested manufacturer manufacturer code qty c bypass inputfsupplyfbypassfcapacitor 10uff10%f35v tdk cga5l3x5r1v106k160ab 1 c out outputffilterfcapacitorf 22uff10%f10v tdk c2012x5r1a226k125ab 1 l out outputffilterfinductor 3.3uhf900ma tdk wurth mlp2012s3r3mt 744045003 1 c bst boostfcapacitor 22nff10v tdk c1005x7r1c223k 1 r top voltageffeedbackfresistorf (optional) 17.8kf f(notef1) 1 r bot voltageffeedbackfresistorf (optional) 10kff (notef1) 1 r plp pgfpinfpull-upfresistorf (optional) 10k 1 d catch catchfdiodef(optional) 30vf2a sod-123fl onf semiconductor mbr230lsft1g 1 note 1: the voltage divider resistor values are calculated for an output voltage of 2.5v. for fxed output versions, the fb pin is connected directly to vout. www.semtech.com ts30111 final datasheet rev 1.0 june 2, 2015 14 of 21 semtech external component selection thef1mhzfinternalfswitchingffrequencyfoffthefts30111f facilitatesflowfcostflcfflterfcombinations.fadditionally,fthef fxedfoutputfversionsfenablefafminimumfexternalfcomponentf countftofprovidefafcompletefregulationfsolutionfwithfonlyf4f externalfcomponents:fanfinputfbypassfcapacitor,fanfinductor,f anfoutputfcapacitor,fandfthefbootstrapfcapacitor.fthefinternalf compensationfisfoptimizedfforfaf22uffoutputfcapacitorfandfaf 3.3uhfinductor. forfbestfperformance,faflowfesrfceramicfcapacitorfshouldfbef usedfforfc bypass .ffiffc bypass fisfnotfaflowfesrfceramicfcapacitor,faf 0.1uffceramicfcapacitorfshouldfbefaddedfinfparallelftofc bypass . thefminimumfallowablefvaluefforfthefoutputfcapacitorfisf 22uf.ffftofkeepfthefoutputfrippleflow,faflowfesrf(lessfthanf 35mohm)fceramicfisfrecommended.fmultiplefcapacitorsfcanf befparalleledftofreducefthefesr. thefinductorfrangefisf3.3uhf+/-20%.ffforfoptimalfover-currentf protection,fthefinductorfshouldfbefableftofhandlefupftofthef regulatorfcurrentflimitfwithoutfsaturation.fotherwise,fanf inductorfwithfafsaturationfcurrentfratingfhigherfthanfthef maximumfioutfloadfrequirementfplusfthefinductorfcurrentf ripplefshouldfbefused.f forfhighfcurrentfmodes,fthefoptionalfschottkyfdiodefwillf improvefthefoverallfefciencyfandfreducefthefheat.fitfisfupf tofthefuserftofdeterminefthefcost/beneftfoffaddingfthisf additionalfcomponentfinfthefusersfapplication.ffthefdiodefisf typicallyfnotfneeded. f forfthefadjustablefoutputfversionfoffthefts30111,fthefoutputf voltagefcanfbefadjustedfbyfsizingfr top fandfr bot ffeedbackf resistors.ffthefequationfforfthefoutputfvoltagefisfv out f=f0.8f(1f+f r top /r bot ). forfthefadjustablefversion,fthefratiofoffvcc/v out fcannotfexceedf 16. rpupfisfonlyfrequiredfwhenfthefpowerfgoodfsignalf(pg)fisf utilized. thermal information ts30111fisfdesignedfforfafmaximumfoperatingfjunctionf temperatureft j foff125c.fthefmaximumfoutputfpowerfisflimitedf byfthefpowerflossesfthatfcanfbefdissipatedfoverfthefthermalf resistancefgivenfbyfthefpackagefandfthefpcbfstructures.fthef pcbfmustfprovidefheatfsinkingftofkeepfthefts30111fcool.fthef exposedfmetalfonfthefbottomfoffthefqfnfpackagefmustfbef solderedftofafgroundfplane.fthisfgroundfshouldfbeftiedftof otherfcopperflayersfbelowfwithfthermalfvias.ffaddingfmoref copperftoftheftopfandfthefbottomflayersfandftyingfthisfcopperf tofthefinternalfplanesfwithfviasfcanfreducefthermalfresistancef further.fforfafhi-kfjedecfboardfandf13.5fsquarefinchfoff1fozf cu,fthefthermalfresistanceffromfjunctionftofambientfcanfbef reducedftof ja f=f38c/w.ffthefpowerfdissipationfoffotherfpowerf componentsf(catchfdiode,finductor)fcausefadditionalfcopperf heatingfandfcanffurtherfincreasefwhatfthefts30111fseesfasf ambientftemperature. www.semtech.com ts30111 final datasheet rev 1.0 june 2, 2015 15 of 21 semtech units millimeters dimensionflimits min nom max numberfoffpins n 16 pitch e 0.50fbsc overallfheight a 0.80 0.90 1.00 standof a1 0.00 0.02 0.05 contactfthickness a3 0.20fref overallflength d 3.00fbsc exposedfpadfwidth e2 1.55 1.70 1.80 overallfwidth e 3.00fbsc exposedfpadflength d2 1.55 1.70 1.80 contactfwidth b 0.20 0.25 0.30 contactflength l 0.20 0.30 0.40 contact-to-exposedfpad k 0.20 - - notes: dimensions and toleraning per asme y14.5m bsc: basic dimension. theoretically exact value shown without tolerances. ref: reference dimension, usually without tolerance, for information only. yyyy = internal trace code. xx = internal year and assembly code. package mechanical drawings (all dimensions in mm) www.semtech.com ts30111 final datasheet rev 1.0 june 2, 2015 16 of 21 semtech recommeded pcb land pattern dimensionsfinfmillimeters units millimeters dimensionflimits min nom max contactfpitch e 0.50fbsc optionalfcenterfpadfwidth w2 - - 1.70 optionalfcenterfpadflength t2 - - 1.70 contactfpadfspacing c1 - 3.00 - contactfpadfspacing c2 - 3.00 - contactfpadfwidthf(x8) x1 - - 0.35 contactfpadflengthf(x8) y1 - - 0.65 distancefbetweenfpads g 0.15 - - notes: dimensions and tolerances per asme y14.5m. bsc: basic dimension. theoretically exact values shown without tolerances. ref: reference dimension, usually without tolerance, for information only. www.semtech.com ts30111 final datasheet rev 1.0 june 2, 2015 17 of 21 semtech pacakging information pb-free (rohs): ffthefts30111fdevicesfareffullyfcompliantfforfallfmaterialsfcoveredfbyfeuropeanfunionfdirectivef2002/95/ec,fandf meetfallfipc-1752flevelf3fmaterialsfdeclarationfrequirements. msl, peak temp: fthefts30111ffamilyfhasfafmoisturefsensitivityflevelf(msl)f1fratingfperfjedecfj-std-020d.ffthesefdevicesfalsof havefafpeakfproflefsolderftemperaturef(tp)foff260c. ir refow profle profle feature sn-pb eutectic assembly pb-free assembly averageframp-upfrate (tsmaxftoftp) 3c/secondfmax. 3c/secondfmax. preheat -ftemperaturefminf(tsmin) -ftemperaturefmaxf(tsmax) -ftimef(tsminftoftsmax)f(ts) 100c 150c 60-120fseconds 150c 200c 60-180fseconds timefmaintainedfabove: -ftemperaturef(tl) -ftimef(tl) 183c 60-150fseconds 217c 60-150fse conds peakftemperaturef(tp) seeftablef4.1 seeftablef4.2 timefwithinf5cfoffactualfpeak temperaturef(tp)2 10-30fseconds 20-40fseconds ramp-downfrate 6c/secondfmax. 6c/secondfmax. timef25cftofpeakftemperature 6fminutesfmax. 8fminutesfmax. note 1: all temperatures refer to topside of the package, measured on the package body surface note 2: time within 5 c of actual peak temperature (tp) specifed for the refow profles is a supplier minimum and user maximum. www.semtech.com ts30111 final datasheet rev 1.0 june 2, 2015 18 of 21 semtech table 4-1 snpb eutectic process - package peak refow temperatures package thickness volume mm 3 <350 volume mm3 350 <2.5fmm 240f+0/-5fc 225f+0/-5c f2.5fmm 225f+0/-5c 225f+0/-5c table 4-2 pb-free process - package peak refow temperatures package thickness volume mm 3 < 350 volume mm 3 350 - 2000 volume mm 3 > 2000 ts30111 final datasheet rev 1.0 june 2, 2015 19 of 21 semtech 22 ts30111 version 1. 0 specifications subject to change www.triunesystems.com copyright ? 2012, triune systems, llc reel dimensions (13 inch) reel dimensions (13 inch) product specifcations tape width a (max.) n (min.) w1 w2 8mm 330 100 8.4 14.4 12mm 330 100 12.4 18.4 16mm 330 100 16.4 22.4 www.semtech.com ts30111 final datasheet rev 1.0 june 2, 2015 20 of 21 semtech carrier tape specifcation allfdfnfandfqfnfpackagesfwillfbeforientedfsofthatfthefindexfpackageflocationsfwillfbefonfthefupperfrightfcornerfoffthefsprocketf sidefoffthefcarrierftape. allfcarrierftapefusedfforfpackingftriunefsystemfcomponentsfwillfbefspecifcallyfformulatedftofprovidefprotectionffromfphysicalf andfelectro-staticfdischargef(esd)damagefduringfshippingfandfstorage.fembossedfearnerftapefmustfbefeiafstandard-481-1f compliantfandfmeetfthefmechanicalfcharacteristicsfshownfinftablef3. dimensions are in millimeters pkg type ao bo w do d1 e1 e2 f p1 p0 k0 t wc tc 2x2mmf dfn 2.3 2.3 8.0ff +/-f 0.2 1.50f +/-f 0.10 1.10f +/-f 0.10 1.75f +/-f 0.10 6.25f min 3.5f +/-f 0.05 4 4 1.5 0.25f +/-f 0.05 8 0.21- 0.35 3x3mmf qfn 3.3 3.3 12 1.50f +/-f 0.10 1.10f +/-f 0.10 3.5f +/-f 0.05 8 8 1.1 4.5 0.21- 0.35 4x4mmf qfn 4.35 4.35 12 1.50f +/-f 0.10 1.10f +/-f 0.10 3.5f +/-f 0.05 8 8 1.1 5.4 0.21- 0.35 5x5f qfn 5.25 5.25 12 1.50f +/-f 0.10 1.10f +/-f 0.10 3.5f +/-f 0.05 8 8 1.1 9.2 0.21- 0.35 6x6mm qfn 6.3ff +/-f 0.10 6.3ff +/-f 0.10 16ff +/-f 0.30 1.50f +/-f 0.10 1.50f +/-f 0.10 1.75f +/-f 0.10 14.25 7.5f +/-f 0.10 12 2 1.1 0.30f +/-f 0.05 13.3 0.21- 0.35 www.semtech.com ts30111 final datasheet rev 1.0 june 2, 2015 21 of 21 semtech contactfinformation semtechfcorporation 200fflynnfroad,fcamarillo,fcaf93012 phone:f(805)f498-2111,ffax:f(805)f498-3804 www.semtech.com importantfnotice informationfrelatingftofthisfproductfandfthefapplicationforfdesignfdescribedfhereinfisfbelievedftofbefreliable,fhoweverfsuchfinformationfisfprovidedfasfaf guidefonlyfandfsemtechfassumesfnofliabilityfforfanyferrorsfinfthisfdocument,forfforfthefapplicationforfdesignfdescribedfherein.fsemtechfreservesfthefrightf tofmakefchangesftofthefproductforfthisfdocumentfatfanyftimefwithoutfnotice.fbuyersfshouldfobtainftheflatestfrelevantfinformationfbeforefplacingfordersf andfshouldfverifyfthatfsuchfinformationfisfcurrentfandfcomplete.fsemtechfwarrantsfperformancefoffitsfproductsftofthefspecifcationsfapplicablefatftheftimef offsale,fandfallfsalesfarefmadefinfaccordancefwithfsemtechsfstandardftermsfandfconditionsfoffsale. semtechfproductsfarefnotfdesigned,fintended,fauthorizedforfwarrantedftofbefsuitablefforfusefinflife-supportfapplications,fdevicesf orfsystems,forfinfnuclearfapplicationsfinfwhichftheffailurefcouldfbefreasonablyfexpectedftofresultfinfpersonalfinjury,flossfofflifef orfseverefpropertyforfenvironmentalfdamage.finclusionfoffsemtechfproductsfinfsuchfapplicationsfisfunderstoodftofbefundertakenf solelyfatfthefcustomersfownfrisk.fshouldfafcustomerfpurchaseforfusefsemtechfproductsfforfanyfsuchfunauthorizedfapplication,fthefcustomerfshallf indemnifyfandfholdfsemtechfandfitsfofcers,femployees,fsubsidiaries,fafliates,fandfdistributorsfharmlessfagainstfallfclaims,fcostsfdamagesfandfattorneyf feesfwhichfcouldfarise. thefsemtechfnamefandflogofarefregisteredftrademarksfoffthefsemtechfcorporation.fallfotherftrademarksfandftradefnamesfmentionedfmayfbefmarksfandf namesfoffsemtechforftheirfrespectivefcompanies.fsemtechfreservesfthefrightftofmakefchangesfto,forfdiscontinuefanyfproductsfdescribedfinfthisfdocumentf withoutffurtherfnotice.fsemtechfmakesfnofwarranty,frepresentationforfguarantee,fexpressforfimplied,fregardingfthefsuitabilityfoffitsfproductsfforfanyf particularfpurpose.fallfrightsfreserved.f ?fsemtechf2015 |
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