TLC59281 www.ti.com SBVS139B–JANUARY2010–REVISEDJANUARY2011 16-Channel, Constant-Current LED Driver CheckforSamples:TLC59281 FEATURES APPLICATIONS 1 • 16Channels,Constant-CurrentSinkOutput • LEDVideoDisplays 2 withOn/OffControl • MessageBoards • 35-mACapability(Constant-CurrentSink) • Illumination • 10-nsHigh-SpeedConstant-CurrentSwitching DESCRIPTION TransientTime • LowOn-TimeError The TLC59281 is a 16-channel, constant-current sink LED driver. Each channel can be turned on/off by • LEDPower-SupplyVoltageupto17V writing serial data to an internal register. The • V =3.0Vto5.5V CC constant-current value of all 16 channels is set by a • Constant-CurrentAccuracy: singleexternalresistor. – Channel-to-Channel= ±1% – Device-to-Device=±1% • CMOSLogicLevelI/O • 35-MHzDataTransferRate • 20-nsBLANKPulseWidth • OperatingTemperature:–40°Cto+85°C VLED VLED VLED VLED ¼ ¼ ¼ ¼ ¼ ¼ ¼ ¼ OUT0 OUT15 OUT0 OUT15 DATA SIN SOUT SIN SOUT SCLK SCLK VCC SCLK VCC Controller LAT LAT VCC LAT VCC BLANK BLANK BLANK ERRERADOR IREF TLCI5C91281 GND IREF ICn GND R R IREF IREF 3 TypicalApplicationCircuit(MultipleDaisy-ChainedTLC59281s) 1 Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet. Alltrademarksarethepropertyoftheirrespectiveowners. 2 PRODUCTIONDATAinformationiscurrentasofpublicationdate. ©2010–2011,TexasInstrumentsIncorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarilyincludetestingofallparameters.

TLC59281 SBVS139B–JANUARY2010–REVISEDJANUARY2011 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriateprecautions.Failuretoobserveproperhandlingandinstallationprocedurescancausedamage. ESDdamagecanrangefromsubtleperformancedegradationtocompletedevicefailure.Precisionintegratedcircuitsmaybemore susceptibletodamagebecauseverysmallparametricchangescouldcausethedevicenottomeetitspublishedspecifications. PACKAGE/ORDERINGINFORMATION(1) PRODUCT PACKAGE-LEAD ORDERINGNUMBER TRANSPORTMEDIA,QUANTITY TLC59281DBQR TapeandReel,2500 TLC59281 SSOP-24/QSOP-24 TLC59281DBQ Tube,50 TLC59281RGER TapeandReel,3000 TLC59281 QFN-24 TLC59281RGE TapeandReel,250 (1) Forthemostcurrentpackageandorderinginformation,seethePackageOptionAddendumattheendofthisdocument,orvisitthe deviceproductfolderatwww.ti.com. ABSOLUTE MAXIMUM RATINGS(1)(2) Overoperatingfree-airtemperaturerange,unlessotherwisenoted. PARAMETER TLC59281 UNIT V Supplyvoltage:V –0.3to+6.0 V CC CC I Outputcurrent(dc) OUT0toOUT15 40 mA OUT V Inputvoltagerange SIN,SCLK,LAT,BLANK,IREF –0.3toV +0.3 V IN CC SOUT –0.3toV +0.3 V CC V Outputvoltagerange OUT OUT0toOUT15 –0.3to+18 V T Operatingjunctiontemperature +150 °C J(MAX) T Storagetemperaturerange –55to+150 °C STG Humanbodymodel(HBM) 2 kV ESDrating Chargeddevicemodel(CDM) 500 V (1) Stressesabovetheseratingsmaycausepermanentdamage.Exposuretoabsolutemaximumconditionsforextendedperiodsmay degradedevicereliability.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyond thosespecifiedisnotsupported. (2) Allvoltagevaluesarewithrespecttonetworkgroundterminal. DISSIPATION RATINGS OPERATINGFACTOR T <+25°C T =+70°C T =+85°C A A A PACKAGE ABOVET =+25°C POWERRATING POWERRATING POWERRATING A SSOP-24/QSOP-24 14.3mW/°C 1782mW 1140mW 927mW QFN-24(1) 24.8mW/°C 3106mW 1988mW 1615mW (1) ThepackagethermalimpedanceiscalculatedinaccordancewithJESD51-5. 2 SubmitDocumentationFeedback ©2010–2011,TexasInstrumentsIncorporated ProductFolderLink(s):TLC59281

TLC59281 www.ti.com SBVS139B–JANUARY2010–REVISEDJANUARY2011 RECOMMENDED OPERATING CONDITIONS AtT =–40°Cto+85°C,unlessotherwisenoted. A TLC59281 PARAMETER TESTCONDITIONS MIN NOM MAX UNIT DCCharacteristics:V =3Vto5.5V CC V Supplyvoltage 3.0 5.5 V CC V Voltageappliedtooutput OUT0toOUT15 17 V O V High-levelinputvoltage 0.7×V V V IH CC CC V Low-levelinputvoltage GND 0.3×V V IL CC I High-leveloutputcurrent SOUT –1 mA OH I Low-leveloutputcurrent SOUT 1 mA OL I Constantoutputsinkcurrent OUT0toOUT15 2 35 mA OLC T Operatingfree-airtemperaturerange –40 +85 °C A T Operatingjunctiontemperaturerange –40 +125 °C J ACCharacteristics:V =3Vto5.5V CC f Datashiftclockfrequency SCLK 35 MHz CLK(SCLK) T SCLK 10 ns WH0 T SCLK 10 ns WL0 T Pulseduration LAT 20 ns WH1 T BLANK 20 ns WH2 T BLANK 20 ns WL2 T SIN–SCLK↑ 4 ns SU0 Setuptime T LAT↑–SCLK↑ 100 ns SU1 T SIN–SCLK↑ 3 ns H0 Holdtime T LAT↑–SCLK↑ 10 ns H1 ©2010–2011,TexasInstrumentsIncorporated SubmitDocumentationFeedback 3 ProductFolderLink(s):TLC59281

TLC59281 SBVS139B–JANUARY2010–REVISEDJANUARY2011 www.ti.com ELECTRICAL CHARACTERISTICS AtV =3.0Vto5.5VandT =–40°Cto+85°C.TypicalvaluesatV =3.3VandT =+25°C,unlessotherwisenoted. CC A CC A TLC59281 PARAMETER TESTCONDITIONS MIN TYP MAX UNIT VOH High-leveloutputvoltage IOH=–1mAatSOUT VCC–0.4 VCC V VOL Low-leveloutputvoltage IOL=1mAatSOUT 0 0.4 V IIN Inputcurrent VIN=VCCorGNDatSIN,SCLK,LAT,andBLANK –1 1 mA ICC1 SRIIRNE/FSC=L2K7/LkAΩT=low,BLANK=high,VOUTn=1V, 1 2 mA ICC2 SRIIRNE/FSC=L3Kk/LΩAT=low,BLANK=high,VOUTn=1V, 4.5 8 mA Supplycurrent(VCC) ICC3 SRIIRNE/FSC=L3Kk/LΩAT/BLANK=low,VOUTn=1V, 7 18 mA ICC4 SRIIRNE/FSC=L1K.5/LkAΩT/BLANK=low,VOUTn=1V, 16 40 mA IOLC Constantoutputcurrent A(sleleOUFiTgnur=eO6)N,,aVtOOUUTTn0=tVoOOUTUfiTx1=51V,RIREF=1.5kΩ 31 34 37 mA AllOUTnforconstant-currentdriver,alloutputsoff IOLKG Outputleakagecurrent BLANK=high,VOUTn=VOUTfix=17V,RIREF=1.5kΩ 0.1 mA (seeFigure6),atOUT0toOUT15 ΔIOLC C(cohnasntnaenlt--tcou-crrheanntneerlr)o(1r) AatllOOUUTT0nt=oOOUNT,V15OUTn=VOUTfix=1V,RIREF=1.5kΩ ±1 ±3 % ΔIOLC1 C(doenvsictaen-tto-c-duerrveicnet)e(2rr)or AatllOOUUTT0nt=oOOUNT,V15OUTn=VOUTfix=1V,RIREF=1.5kΩ ±1 ±6 % ΔIOLC2 Lineregulation(3) AatllOOUUTT0nt=oOOUNT,V15OUTn=VOUTfix=1V,RIREF=1.5kΩ ±0.5 ±1 %/V ΔIOLC3 Loadregulation(4) ARlIlROEFU=T1n.5=kOΩN,,aVtOOUUTnT=01toVOtUoT31V5,VOUTfix=1V, ±1 ±3 %/V VIREF Referencevoltageoutput RIREF=1.5kΩ 1.16 1.20 1.24 V (1) ThedeviationofeachoutputfromtheaverageofOUT0–OUT15constant-current.Deviationiscalculatedbytheformula: I D(%) = OUTn -1 ´100 (I + I + ... + I + I ) OUT0 OUT1 OUT14 OUT15 16 . (2) ThedeviationoftheOUT0–OUT15constant-currentaveragefromtheidealconstant-currentvalue. Deviationiscalculatedbythefollowingformula: (I + I + ... I + I ) OUT0 OUT1 OUT14 OUT15 -(Ideal Output Current) 16 D(%) = ´100 Ideal Output Current Idealcurrentiscalculatedbytheformula: 1.20 I = 42´ OUT(IDEAL) R IREF (3) Lineregulationiscalculatedbythisequation: D(%/V) = (IOUTnat VCC= 5.5 V)-(IOUTnat VCC= 3.0 V) ´ 100 (IOUTnat VCC= 3.0 V) 5.5 V-3 V (4) Loadregulationiscalculatedbytheequation: D(%/V) = (IOUTnat VOUTn= 3 V)-(IOUTnat VOUTn= 1 V) ´ 100 (I at V = 1 V) 3 V-1 V OUTn OUTn 4 SubmitDocumentationFeedback ©2010–2011,TexasInstrumentsIncorporated ProductFolderLink(s):TLC59281

TLC59281 www.ti.com SBVS139B–JANUARY2010–REVISEDJANUARY2011 SWITCHING CHARACTERISTICS AtV =3.0Vto5.5V,T =–40°Cto+85°C,C =15pF,R =130Ω,R =1.5kΩ,andV =5.5V.Typicalvaluesat CC A L L IREF LED V =3.3VandT =+25°C,unlessotherwisenoted. CC A TLC59281 PARAMETER TESTCONDITIONS MIN TYP MAX UNIT t SOUT(seeFigure5) 5 15 ns R0 Risetime t OUTn(seeFigure4) 10 30 ns R1 t SOUT(seeFigure5) 5 15 ns F0 Falltime t OUTn(seeFigure4) 10 30 ns F1 t SCLK↑toSOUT 8 20 ns D0 LAT↑orBLANK↓toOUTnsinkcurrenton t 12 30 ns D1 Propagationdelaytime (seeFigure10) LAT↑orBLANK↑toOUTnsinkcurrentoff t 12 30 ns D2 (seeFigure10) t Outputon-timeerror(1) On/offlatchdata=all'1',20nsBLANKlowlevel –8 +8 ns ON_ERR one-shotpulseinput(seeFigure4) (1) Outputon-timeerror(t )iscalculatedbytheformula:t (ns)=t –BLANKlowlevelone-shotpulsewidth(T ). ON_ERR ON_ERR OUT_ON WL2 t indicatestheactualon-timeoftheconstant-currentdriver. OUT_ON FUNCTIONAL BLOCK DIAGRAM VCC TI Reserved Data VCC 16 SIN LSB MSB On/Off Control Shift Register SCLK (1 Bit x 16 Channels) SOUT 0 15 16 LSB MSB LAT On/Off Control Data Latch (1 Bit x 16 Channels) BLANK 0 15 16 IREF 16-Channel Constant-Current Sink Driver GND GND ¼ OUT0 OUT1 OUT14 OUT15 ©2010–2011,TexasInstrumentsIncorporated SubmitDocumentationFeedback 5 ProductFolderLink(s):TLC59281

TLC59281 SBVS139B–JANUARY2010–REVISEDJANUARY2011 www.ti.com DEVICE INFORMATION SSOP-24/QSOP-24 QFN-24 DBQPACKAGE RGEPACKAGE (TOPVIEW) (TOPVIEW) GND 1 24 VCC CLK N ND CC EF OUT S SI G V R S I SIN 2 23 IREF 4 3 2 1 0 9 2 2 2 2 2 1 SCLK 3 22 SOUT LAT 1 18 BLANK LAT 4 21 BLANK OUT0 2 17 OUT15 OUT0 5 20 OUT15 OUT1 3 Thermal Pad 16 OUT14 OUT1 6 19 OUT14 (Bottom Side) TLC59281 OUT2 7 18 OUT13 OUT2 4 TLC59281 15 OUT13 OUT3 5 14 OUT12 OUT3 8 17 OUT12 OUT4 6 13 OUT11 OUT4 9 16 OUT11 OUT5 10 15 OUT10 7 8 9 10 11 12 OUT6 11 14 OUT9 5 6 7 8 9 0 T T T T T 1 OUT7 12 13 OUT8 U U U U U T O O O O O U O NOTE:ThermalpadisnotconnectedtoGNDinternally.ThethermalpadmustbeconnectedtoGNDviathePCBpattern. 6 SubmitDocumentationFeedback ©2010–2011,TexasInstrumentsIncorporated ProductFolderLink(s):TLC59281

TLC59281 www.ti.com SBVS139B–JANUARY2010–REVISEDJANUARY2011 TERMINALFUNCTIONS TERMINAL NAME DBQ RGE I/O DESCRIPTION Serialdatainputfordriveron/offcontrol.WhenSIN=highlevel,data'1'arewrittenintoLSB SIN 2 23 I oftheon/offcontrolshiftregisterattherisingedgeofSCLK. Serialdatashiftclock.Schmittbufferinput.Alldataintheon/offcontrolshiftregisterare SCLK 3 24 I shiftedtowardtheMSBby1-bitsynchronizationofSCLK.ArisingedgeonSCLKisallowed 100nsafterarisingedgeofLAT. Edgetriggeredlatch.Thedataintheon/offcontroldatashiftregisteraretransferredtothe on/offcontroldatalatchatthisrisingedge.Atthesametime,thedataintheon/offcontrolshift LAT 4 1 I registerarereplacedwithTIreserveddataforproductiontest.LATmustbetoggledonlyonce aftertheshiftdataareupdatedtoavoidtheon/offcontrollatchdatabeingreplacedwithTI reserveddataintheshiftregister.Thereserveddataisnotafixednumber. Blank,alloutputs.WhenBLANK=highlevel,allconstant-currentoutputs(OUT0–OUT15)are BLANK 21 18 I forcedoff.WhenBLANK=lowlevel,allconstant-currentoutputsarecontrolledbytheon/off controldatainthedatalatch. Constant-currentvaluesetting,OUT0–OUT15sinkconstant-currentissettodesiredvalueby IREF 23 20 I/O connectiontoanexternalresistorbetweenIREFandGND. Serialdataoutput.ThisoutputisconnectedtotheMSBoftheon/offdatashiftregister.SOUT SOUT 22 19 O datachangesattherisingedgeofSCLK. Constant-currentoutput.Eachoutputcanbetiedtogetherwithotherstoincreasethe OUT0 5 2 O constant-current.Differentvoltagescanbeappliedtoeachoutput. OUT1 6 3 O Constant-currentoutput OUT2 7 4 O Constant-currentoutput OUT3 8 5 O Constant-currentoutput OUT4 9 6 O Constant-currentoutput OUT5 10 7 O Constant-currentoutput OUT6 11 8 O Constant-currentoutput OUT7 12 9 O Constant-currentoutput OUT8 13 10 O Constant-currentoutput OUT9 14 11 O Constant-currentoutput OUT10 15 12 O Constant-currentoutput OUT11 16 13 O Constant-currentoutput OUT12 17 14 O Constant-currentoutput OUT13 18 15 O Constant-currentoutput OUT14 19 16 O Constant-currentoutput OUT15 20 17 O Constant-currentoutput VCC 24 21 — Power-supplyvoltage GND 1 22 — Powerground ©2010–2011,TexasInstrumentsIncorporated SubmitDocumentationFeedback 7 ProductFolderLink(s):TLC59281

TLC59281 SBVS139B–JANUARY2010–REVISEDJANUARY2011 www.ti.com PARAMETER MEASUREMENT INFORMATION PIN EQUIVALENT INPUT AND OUTPUT SCHEMATIC DIAGRAMS VCC VCC INPUT SOUT GND GND Figure1.SIN,SCLK,LAT,BLANK Figure2.SOUT OUTn GND Figure3.OUT0ThroughOUT15 TEST CIRCUITS VCC RL VCC VCC IREF OUTn V RIREF GND CL(1) LED VCC SOUT GND CL(1) (1) C includesmeasurementprobeandjigcapacitance. L (1) C includesmeasurementprobeandjigcapacitance. Figure4. RiseTimeandFallTimeTestCircuitfor L OUTn Figure5. RiseTimeandFallTimeTestCircuitfor SOUT VCC OUT0 VCC ¼ IREF OUTn ¼ RIREF GND OUT15 VOUTn VOUT FIX Figure6. Constant-CurrentTestCircuitforOUTn 8 SubmitDocumentationFeedback ©2010–2011,TexasInstrumentsIncorporated ProductFolderLink(s):TLC59281

TLC59281 www.ti.com SBVS139B–JANUARY2010–REVISEDJANUARY2011 TIMING DIAGRAMS T , T , T , T , T : WH0 WL0 WH1 WH2 WL2 V CC INPUT(1) 50% GND T T WH WL T , T , T , T : SU0 SU1 H0 H1 V CC CLOCK 50% INPUT(1) GND T T SU H V CC DATA/CONTROL 50% INPUT(1) GND (1) Inputpulseriseandfalltimeis1nsto3ns. Figure7. InputTiming t , t , t , t , t , t , t : R0 R1 F0 F1 D0 D1 D2 V CC INPUT(1) 50% GND t D V or V OH OUTn 90% OUTPUT 50% 10% V or V OL OUTn t or t R F (1) Inputpulseriseandfalltimeis1nsto3ns. Figure8. OutputTiming ©2010–2011,TexasInstrumentsIncorporated SubmitDocumentationFeedback 9 ProductFolderLink(s):TLC59281

TLC59281 SBVS139B–JANUARY2010–REVISEDJANUARY2011 www.ti.com SIN DATA DATA DATA DATA DATA DATA DATA DATA DATA DATA DATA DATA DATA DATA DATA DATA 0A 15B 14B 13B 12B 11B 3B 2B 1B 0B 15C 14C 13C 12C 11C 10C T TSU0 H0 T TH1 WH0 T SU1 SCLK 1 2 3 4 5 13 14 15 16 1 2 3 4 5 6 T T WH1 WL0 LAT LSB DSahtaif t( RInetegrinstael)r D0AATA RSV D1A5TBA D1A4TBA D1A3TBA D1A2TBA D3ABTA D2ABTA D1ABTA D0ABTA RSV0A D1A5TCA D1A4TCA D1A3TCA D1A2TCA D1A1TCA LSB+1 DSahtaif t( RInetegrinstael)r D1AATA RSV RSV D1A5TBA D1A4TBA D1A3TBA D4ABTA D3ABTA D2ABTA D1ABTA RSV1A RSV DATA DATA DATA DATA ¼ ¼ ¼ MSB-1 DSahtaif t( RInetegrinstael)r D1A4TAA RSV RSV RSV RSV RSV RSV RSV D1A5TBA D1A4TBA RSV14A RSV RSV RSV RSV RSV MSB DSahtaift (RInetegrisntaelr) D1A5TAA RSV RSV RSV RSV RSV RSV RSV RSV D1A5TBA RSV15A RSV RSV RSV RSV RSV On/Off Control Previous On/Off Latch Data Latest On/Off Latch Data Latch Data (Internal) SOUT D1A5TAA RSV RSV RSV RSV RSV RSV RSV D1A5TBA RSV15A RSV RSV RSV RSV RSV t t /t D0 R0 F0 t WH2 BLANK t WL2 t t D1 D2 OFF OFF OUTn(1) ON ON ON t tD1 tD2 OFF OUTON OFF OUTn(2) ON ON t t F1 D1 OFF OFF OUTn(3) ON ON t OFF R1 OFF OUTn(4) ON (1) On/offlatcheddataare'1'. (2) On/offlatcheddataarechangedfrom'1'to'0'atthesecondLATsignal. (3) On/offlatcheddataarechangedfrom'0'to'1'atthesecondLATsignal. (4) On/offlatcheddataare'0'. Figure9. TimingDiagram 10 SubmitDocumentationFeedback ©2010–2011,TexasInstrumentsIncorporated ProductFolderLink(s):TLC59281

TLC59281 www.ti.com SBVS139B–JANUARY2010–REVISEDJANUARY2011 TYPICAL CHARACTERISTICS AtV =3.3VandT =+25°C,unlessotherwisenoted. CC A REFERENCERESISTOR POWERDISSIPATIONRATE vsOUTPUTCURRENT vsFREE-AIRTEMPERATURE 100000 4000 W) TLC59281RGE W) m 3000 stor ( 25200 Rate ( ence Resi 10000 10080 5040 ssipation 2000 TLC59281DBQ er 3360 Di Ref 2520 2016 1680 Power 1000 1440 1000 0 0 5 10 15 20 25 30 35 -40 -20 0 20 40 60 80 100 Output Current (mA) Free-Air Temperature (°C) Figure10. Figure11. OUTPUTCURRENTvs OUTPUTCURRENTvs OUTPUTVOLTAGE OUTPUTVOLTAGE 40 40 TA= +25°C IO= 35 mA 39 IO= 30 mA 35 IO= 30 mA 38 mA) 30 mA) 37 urrent ( 2250 IO= 20 mA urrent ( 3365 C C ut 15 ut 34 p p Out 10 IO= 10 mA Out 33 TA=-40°C 5 IO= 2 mA IO= 5 mA 3321 TTA== ++2855°°CC A 0 30 0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.5 1.0 1.5 2.0 2.5 3.0 Output Voltage (V) Output Voltage (V) Figure12. Figure13. ΔI vsAMBIENTTEMPERATURE ΔI vsOUTPUTCURRENT OLC OLC 4 4 I = 35 mA T = +25°C O A 3 3 2 2 1 1 %) %) ( ( C 0 C 0 OL OL DI -1 DI -1 -2 -2 V = 3.3 V V = 3.3 V -3 CC -3 CC V = 5 V V = 5 V CC CC -4 -4 -40 -20 0 20 40 60 80 100 0 10 20 30 40 Ambient Temperature (°C) Output Current (mA) Figure14. Figure15. ©2010–2011,TexasInstrumentsIncorporated SubmitDocumentationFeedback 11 ProductFolderLink(s):TLC59281

TLC59281 SBVS139B–JANUARY2010–REVISEDJANUARY2011 www.ti.com TYPICAL CHARACTERISTICS (continued) AtV =3.3VandT =+25°C,unlessotherwisenoted. CC A CONSTANT-CURRENTOUTPUT VOLTAGEWAVEFORM CH1-BLANK CH1 (2 V/div) (20 ns) CH2-OUT0 CH2 (2 V/div) (BLANK = 20 ns) I = 35 mA CH3-OUT15 OLC CH3 (2 V/div) T = +25°C (BLANK = 20 ns) A R = 130W L C = 15 pF L VLED = 5.5 V Time (12.5 ns/div) Figure16. 12 SubmitDocumentationFeedback ©2010–2011,TexasInstrumentsIncorporated ProductFolderLink(s):TLC59281

TLC59281 www.ti.com SBVS139B–JANUARY2010–REVISEDJANUARY2011 DETAILED DESCRIPTION SETTING FOR THE CONSTANT SINK CURRENT VALUE The constant-current values are determined by an external resistor (R ) placed between IREF and GND. The IREF resistor(R )valueiscalculatedbyEquation1. IREF R (kW) = VIREF(V) ´42 IREF I (mA) OLC Where: V =theinternalreferencevoltageontheIREFpin(typically1.20V) (1) IREF I must be set in the range of 2 mA to 35 mA. The constant sink current characteristic for the external resistor OLC valueisshowninFigure10.Table1describestheconstant-currentoutputversusexternalresistorvalue. Table1.Constant-CurrentOutputversusExternalResistorValue I (mA,Typical) R (kΩ) OLCMax IREF 35 1.44 30 1.68 25 2.02 20 2.52 15 3.36 10 5.04 5 10.1 2 25.2 CONSTANT-CURRENT DRIVER ON/OFF CONTROL When BLANK is low, the corresponding output is turned on if the data in the on/off control data latch are '1' and remainsoffifthedataare'0'.WhenBLANKishigh,alloutputsareforcedoff.ThiscontrolisshowninTable2. Table2.On/OffControlDataTruthTable ON/OFFCONTROLLATCHDATA CONSTANT-CURRENTOUTPUTSTATUS 0 Off 1 On When the IC is initially powered on, the data in the on/off control shift register and data latch are not set to the respective default value. Therefore, the on/off control data must be written to the data latch before turning the constant-current output on. BLANK should be at a high level when powered on because the constant-current maybeturnedonasaresultofrandomdataintheon/offcontrollatch. The on/off data corresponding to any unconnected OUTn outputs should be set to ‘0’ before turning on the remainingoutputs.Otherwise,thesupplycurrent(I )increaseswhiletheLEDsareon. CC ©2010–2011,TexasInstrumentsIncorporated SubmitDocumentationFeedback 13 ProductFolderLink(s):TLC59281

TLC59281 SBVS139B–JANUARY2010–REVISEDJANUARY2011 www.ti.com REGISTER CONFIGURATION The TLC59281 has an on/off control data shift register and data latch. Both the on/off control shift register and latch are 16 bits long and are used to turn the constant-current drivers on and off. Figure 17 shows the shift register and latch configuration. The data at the SIN pin are shifted in to the LSB of the shift register at the rising edge of the SCLK pin; SOUT data change at the rising edge of SCLK. The timing diagram for data writing is showninFigure18.Thedriveron/offiscontrolledbythedataintheon/offcontroldatalatch. The on/off data are latched into the data latch by a rising edge of LAT after the data are written into the on/off control shift register by SIN and SCLK. At the same time, the data in the on/off control shift register are replaced with TI reserved data for production test. Therefore, LAT must be input only once after the on/off data update to avoid the on/off control data latch being replaced with TI reserved data in the shift register. When the IC initially powers on, the data in the on/off control shift register and latch are not set to the default values; on/off control data must be written to the on/off control data latch before turning the constant-current output on. BLANK should be high when the IC is powered on because the constant-current may be turned on at that time as a result of randomvaluesintheon/offdatalatch.Allconstant-currentoutputsareforcedoffwhenBLANKishigh. On/Off Control Shift Register (1 Bit´16 Channels) MSB LSB 15 14 13 12 11 4 3 2 1 0 On/Off Data On/Off Data On/Off Data On/Off Data ¼ On/Off Data On/Off Data On/Off Data On/Off Data SIN SOUT for for for for for for for for OUT15 OUT14 OUT13 OUT12 OUT3 OUT2 OUT1 OUT0 SCLK ¼ MSB LSB 15 14 13 12 11 4 3 2 1 0 On/Off Data On/Off Data On/Off Data On/Off Data ¼ On/Off Data On/Off Data On/Off Data On/Off Data for for for for for for for for LAT OUT15 OUT14 OUT13 OUT12 OUT3 OUT2 OUT1 OUT0 On/Off Control Data Latch (1 Bit´16 Channels) 16 Bits To Constant Current Driver Control Block Figure17. On/OffControlShiftRegisterandLatchConfiguration 14 SubmitDocumentationFeedback ©2010–2011,TexasInstrumentsIncorporated ProductFolderLink(s):TLC59281

TLC59281 www.ti.com SBVS139B–JANUARY2010–REVISEDJANUARY2011 SIN DATA DATA DATA DATA DATA DATA DATA DATA DATA DATA DATA DATA DATA DATA DATA DATA 0A 15B 14B 13B 12B 11B 3B 2B 1B 0B 15C 14C 13C 12C 11C 10C SCLK 1 2 3 4 5 13 14 15 16 1 2 3 4 5 6 LAT LSB DSahtaif t( RInetegrinstael)r D0AATA RSV D1A5TBA D1A4TBA D1A3TBA D1A2TBA D3ABTA D2ABTA D1ABTA D0ABTA RSV 0A D1A5TCA D1A4TCA D1A3TCA D1A2TCA D1A1TCA LSB+1 DSahtaif t( RInetegrinstael)r D1AATA RSV RSV D1A5TBA D1A4TBA D1A3TBA D4ABTA D3ABTA D2ABTA D1ABTA RSV1A RSV D1A5TCA D1A4TCA D1A3TCA D1A2TCA ¼ ¼ ¼ MSB-1 DSahtiaft( RInetegrinstael)r D1A4TAA RSV RSV RSV RSV RSV RSV RSV D1A5TBA D1A4TBA RSV14A RSV RSV RSV RSV RSV MSB DSahtiaft( RInetegrinstael)r D1AATA RSV RSV RSV RSV RSV RSV RSV RSV D1A5TBA RSV15A RSV RSV RSV RSV RSV On/Off Control Previous On/Off Latch Data Latest On/Off Latch Data Latch Data (Internal) SOUT D1AATA RSV RSV RSV RSV RSV RSV RSV RSV D1A5TBA RSV15A RSV RSV RSV RSV RSV BLANK OFF OUTn(1) OFF ON ON OFF OUTn(2) OFF ON ON OUTn(3) OFF OFF OFF ON ON OFF OFF OUTn(4) OFF ON (1) On/offlatcheddataare'1'. (2) On/offlatcheddataarechangedfrom'1'to'0'atthesecondLATsignal. (3) On/offlatcheddataarechangedfrom'0'to'1'atthesecondLATsignal. (4) On/offlatcheddataare'0'. Figure18. On/OffControlOperation LAYOUT CONSIDERATIONS The output current transient time in the TLC59281 is very fast. In addition, all outputs turn on or off at the same time to minimize the output on-time error. This high current demand can cause GND to shift in the entire system, and lead to false triggering of signals. To overcome this issue, design all GND lines to be as wide and short as possibleinordertoreduceparasiticinductanceandresistance. ©2010–2011,TexasInstrumentsIncorporated SubmitDocumentationFeedback 15 ProductFolderLink(s):TLC59281

TLC59281 SBVS139B–JANUARY2010–REVISEDJANUARY2011 www.ti.com REVISION HISTORY NOTE:Pagenumbersforpreviousrevisionsmaydifferfrompagenumbersinthecurrentversion. ChangesfromRevisionA(September2010)toRevisionB Page • AddedLayoutConsiderationssection ................................................................................................................................ 15 ChangesfromOriginal(January2010)toRevisionA Page • ChangedSO-24toSSOP-24/QSOP-24inPackage/OrderingInformationtable ................................................................. 2 • ChangedSO-24toSSOP-24/QSOP-24inDissipationRatingstable .................................................................................. 2 • ChangedSO-24toSSOP-24/QSOP-24inDBQpinout ....................................................................................................... 6 16 SubmitDocumentationFeedback ©2010–2011,TexasInstrumentsIncorporated ProductFolderLink(s):TLC59281

PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 PACKAGING INFORMATION Orderable Device Status Package Type Package Pins Package Eco Plan Lead/Ball Finish MSL Peak Temp Op Temp (°C) Device Marking Samples (1) Drawing Qty (2) (6) (3) (4/5) TLC59281DBQ ACTIVE SSOP DBQ 24 50 Green (RoHS NIPDAU Level-2-260C-1 YEAR -40 to 85 TLC59281 & no Sb/Br) TLC59281DBQR ACTIVE SSOP DBQ 24 2500 Green (RoHS NIPDAU Level-2-260C-1 YEAR -40 to 85 TLC59281 & no Sb/Br) TLC59281RGER ACTIVE VQFN RGE 24 3000 Green (RoHS NIPDAU Level-2-260C-1 YEAR -40 to 85 TLC & no Sb/Br) 59281 TLC59281RGET ACTIVE VQFN RGE 24 250 Green (RoHS NIPDAU Level-2-260C-1 YEAR TLC & no Sb/Br) 59281 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based flame retardants must also meet the <=1000ppm threshold requirement. (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and Addendum-Page 1

PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 2

PACKAGE MATERIALS INFORMATION www.ti.com 26-Mar-2013 TAPE AND REEL INFORMATION *Alldimensionsarenominal Device Package Package Pins SPQ Reel Reel A0 B0 K0 P1 W Pin1 Type Drawing Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant (mm) W1(mm) TLC59281RGER VQFN RGE 24 3000 330.0 12.4 4.25 4.25 1.15 8.0 12.0 Q2 TLC59281RGET VQFN RGE 24 250 180.0 12.4 4.25 4.25 1.15 8.0 12.0 Q2 PackMaterials-Page1

PACKAGE MATERIALS INFORMATION www.ti.com 26-Mar-2013 *Alldimensionsarenominal Device PackageType PackageDrawing Pins SPQ Length(mm) Width(mm) Height(mm) TLC59281RGER VQFN RGE 24 3000 367.0 367.0 35.0 TLC59281RGET VQFN RGE 24 250 210.0 185.0 35.0 PackMaterials-Page2

GENERIC PACKAGE VIEW RGE 24 VQFN - 1 mm max height PLASTIC QUAD FLATPACK - NO LEAD Images above are just a representation of the package family, actual package may vary. Refer to the product data sheet for package details. 4204104/H

PACKAGE OUTLINE RGE0024C VQFN - 1 mm max height PLASTIC QUAD FLATPACK- NO LEAD A 4.1 B 3.9 4.1 PIN 1 INDEX AREA 3.9 1 MAX C SEATING PLANE 0.05 0.00 2X 2.5 0.08 C 2.1±0.1 (0.2) TYP 7 12 20X 0.5 6 13 2X 25 SYMM 2.5 1 18 0.30 PIN 1 ID 24X 0.18 (OPTIONAL) 24 19 0.1 C A B SYMM 0.50 0.05 C 24X 0.30 4224376 A 072018 NOTES: 1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing per ASME Y14.5M. 2. This drawing is subject to change without notice. 3. The package thermal pad must be soldered to the printed circuit board for thermal and mechanical performance. www.ti.com

EXAMPLE BOARD LAYOUT RGE0024C VQFN - 1 mm max height PLASTIC QUAD FLATPACK- NO LEAD (3.8) ( 2.1) 24 19 24X (0.6) 24X (0.24) 1 18 20X (0.5) 25 SYMM (3.8) 2X (0.8) (Ø0.2) VIA TYP 6 13 (R0.05) 7 12 2X(0.8) SYMM LAND PATTERN EXAMPLE SCALE: 20X 0.07 MAX 0.07 MIN ALL AROUND METAL ALL AROUND SOLDER MASK OPENING SOLDER MASK METAL UNDER OPENING SOLDER MASK NON SOLDER MASK DEFINED SOLDER MASK (PREFERRED) DEFINED SOLDER MASK DETAILS 4224376 A 072018 NOTES: (continued) 4. This package is designed to be soldered to a thermal pad on the board. For more information, see Texas Instruments literature number SLUA271 (www.ti.comlitslua271) . 5. Solder mask tolerances between and around signal pads can vary based on board fabrication site. www.ti.com

EXAMPLE STENCIL DESIGN RGE0024C VQFN - 1 mm max height PLASTIC QUAD FLATPACK- NO LEAD (0.19) 4X ( 0.94) 24 19 24X (0.58) 24X (0.24) 1 18 20X (0.5) SYMM (3.8) (0.57) TYP 6 13 (R0.05) TYP 25 METAL TYP 7 12 (0.57) TYP SYMM SOLDER PASTE EXAMPLE BASED ON 0.125 mm THICK STENCIL EXPOSED PAD 80 PRINTED COVERAGE BY AREA SCALE: 20X 4224376 A 072018 NOTES: (continued) 6. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate design recommendations.. www.ti.com

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