DIG69130

DIG69130 DIOO | Alldatasheet

Document overview

• Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
• PDF pages: 11

Technical content

Features

 LowRDS(ON) forinternalswitches(top/bottom) 70mΩ/40mΩ,3.0A  4.5~24Vinputvoltagerange  High-efficiency synchronousmode  Internalsoft-start limitstheinrush current  Overcurrentprotection  Thermalshutdown  Availablein theTSOT23-6package

Applications

 Portablenavigationdevice  Set topbox  PortableTV  LCDTV Descriptions TheDIG69130 is ahigh-efficiency, high-frequency synchronous step-down DC-DC regulator IC capable of delivering up to 3 A output currents. The DIG69130 family operates over a wide input voltage range from 4.5 V to 24 V and integrates with the main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. TheCOTarchitecturewithpseudo-fixedswitching frequency operation provides fast transient response and eases loop stabilization. Protection features include overcurrent protection and thermalshutdown. The DIG69130 requires a minimal number of readily-available, standard, external components and is available in a space-saving TSOT23-6 package. FunctionBlock OrderingInformation PartNumber TopMarking MSL RoHS TA Package DIG69130TST6 913YW 3 Green -40to85°C TSOT23-6 Tape&Reel,3000

www.dioo.com ©2024DiooMicrocircuitsCo.,Ltd.Jiangsu DIG69130•V1.6 High-Efficiency3A,24VInputSynchronousStepDownConverter PinAssignments Figure1.TSOT23-6(Topview) PinDefinitions Pin Name Description BS Bootstrap.ConnectacapacitorandaresistorbetweenLXandBSpinstoformafloatingsupply acrossthehigh-sideswitchdriver.Recommendtousea0.1μFBScapacitor. GND Powerground FB Outputfeedbackpin. Connectthispintothecenterpoint oftheoutputresistordivider (asshowninFigure2)toprogram theoutputvoltage: VOUT=0.6×(1+R1/R2).AddoptionalC2(10pF ~100pF)tospeedupthetransientresponse. EN Enablecontrol.Pullhightoturnon.Donot float. IN Powerinput LX Inductorpin.Connectthispintotheswitchingnodeofinductor.

www.dioo.com ©2024DiooMicrocircuitsCo.,Ltd.Jiangsu DIG69130•V1.6 High-Efficiency3A,24VInputSynchronousStepDownConverter AbsoluteMaximumRatings Stresses beyond those listed under the Absolute Maximum Rating table may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other condition beyond those indicated in the operational sectionsofthespecificationsisnotimplied.Exposuretoabsolutemaximum ratingconditionsforextendedperiodsmayaffectdevice reliability. Symbol Parameter Rating Unit VIN Supplyvoltage(V+–V-) 28 V EN,LXvoltage VIN +0.3 V FB,BSvoltage 6 V PD Powerdissipation,atTA =25°C 1 W θJA Junction-to-ambient thermalresistance 100 °C/W θJC Junction-to-casethermalresistance 11.2 TSTG Storagetemperaturerange -65to150 °C TJ Maximumjunctiontemperature 150 °C TL Maximumleadtemperature 260 °C ESD HBM,ANSI/ESDA/JEDECJS-001 Allpins ±1 kV RecommendOperatingConditions The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions arespecifiedtoensureoptimal performancetothedatasheet specifications. DIOOdoesnot recommendexceeding them ordesigningtoabsolutemaximum ratings. Symbol Parameter Rating Unit VIN Supplyvoltage 4.5to24 V TJ Junctiontemperaturerange -40to125 °C TA Ambienttemperaturerange -40to85 °C

www.dioo.com ©2024DiooMicrocircuitsCo.,Ltd.Jiangsu DIG69130•V1.6 High-Efficiency3A,24VInputSynchronousStepDownConverter ElectricalCharacteristics VIN =12V,VOUT =1.2V,L= 2.2μH,COUT =47μF,TA =25°C,IOUT=1A,unlessotherwisespecified. Symbol Parameter TestConditions Min Typ Max Unit VIN(1) Supplyvoltage 4.5 24 V IQ Quiescentcurrent IOUT =0,VFB =VREF ×105% 160 µA ISHDN Shutdowncurrent EN=0 10 15 µA VREF Feedbackreferencevoltage 0.591 0.6 0.609 V IFB(1) FBinputcurrent VFB =3.3V -50 50 nA RDS(ON)(1) TopFETRON 70 mΩ RDS(ON)(1) BottomFET RON 40 mΩ ILIM(1) Low sidepowerFETcurrentlimit 3.0 4.0 A VENH ENrisingthreshold 1.5 V VENL ENfallingthreshold 0.4 V VUVLO VIN undervoltageunlockthreshold, rising 4.45 V fSW Switchingfrequency 500 kHz Minontime(1) 40 ns Minofftime(1) 180 ns tSS(1) Soft-starttime 0.8 ms TSD(1) Thermalshutdowntemperature 155 °C THYS(1) Thermalshutdownhysteresis 20 °C Note: (1) Guaranteedbydesign. (2) Specificationssubjecttochangewithoutnotice.

www.dioo.com ©2024DiooMicrocircuitsCo.,Ltd.Jiangsu DIG69130•V1.6 High-Efficiency3A,24VInputSynchronousStepDownConverter TypicalPerformanceCharacteristics VIN =12V,VOUT =3.3V,Load =3A Figure2.Startupfrom VIN VIN =12V,VOUT =3.3V,Load =3A Figure3.ShutdownfromVIN VIN =12V,VOUT =3.3V,Load =3A Figure4.StartupfromEnable VIN =12V,VOUT =3.3V,Load =3A Figure5.ShutdownfromEnable VIN =12V,VOUT =3.3V,Load=0.3~3A Figure6.Loadtransient VIN=12V,VOUT =3.3 V,Load=1.5~3A Figure7.Loadtransient

www.dioo.com ©2024DiooMicrocircuitsCo.,Ltd.Jiangsu DIG69130•V1.6 High-Efficiency3A,24VInputSynchronousStepDownConverter VIN =12V,VOUT =3.3V,Load =0A Figure8.Ripple VIN =12V,VOUT =3.3V,Load =3A Figure9.Ripple VIN=12V,VOUT =3.3V,Load=3A Figure10.Short-circuit protection VIN=12V,VOUT =3.3V,Load= 3A Figure11.Short-circuitrecovery Figure12. Efficiencyvs.Outputcurrent

www.dioo.com ©2024DiooMicrocircuitsCo.,Ltd.Jiangsu DIG69130•V1.6 High-Efficiency3A,24VInputSynchronousStepDownConverter TypicalApplication Figure13. Typicalapplication ApplicationInformation DIG69130isasynchronousbuckregulatorICthatintegratestheCOTcontrol,andtopandbottomswitcheson the same die to minimize the switching transition loss and conduction loss. With ultra-low RDS(ON) power switches and proprietary COT control, this regulator IC can achieve the highest efficiency and the highest switch frequency simultaneously to minimize the external inductor and capacitor size, and thus achieving the minimumsolutionfootprint. Because of the high integration in the DIG69130 IC, the application circuit based on this regulator IC is rather simple. Only input capacitor CIN,output capacitor COUT,output inductor L,and feedback resistors (R1and R2) needtobeselectedforthetargetedapplicationsspecifications. FeedbackresistordividersR1andR2 Choose R1 and R2 to program the proper output voltage. To minimize the power consumption under light loads, it is desirable to choose large resistance values for both R1 and R2. A value of between 10 kΩ and 1 MΩ is highly recommended for both resistors. If VOUT is 3.3 V, and R1 = 100 kΩ is chosen, then R2 can be calculatedtobe22.1kΩ. R2= 1 OUT R0.6VV 0.6V  (1)

www.dioo.com ©2024DiooMicrocircuitsCo.,Ltd.Jiangsu DIG69130•V1.6 High-Efficiency3A,24VInputSynchronousStepDownConverter InputcapacitorCIN Thisripple currentthroughinputcapacitoriscalculated as: ICIN_RMS=IOUT D)D(1 (2) ThisformulahasamaximumatVIN=2VOUT condition,whereICIN_RMS =IOUT/2.Thissimpleworst-casecondition iscommonlyusedforDC/DCdesign. Tominimizethe potentialnoiseproblem,placeatypical X5Rorabetter gradeceramiccapacitorreally closeto theINandGNDpins.Careshouldbetakentominimizetheloopareaformedby CIN,andIN/GNDpins.Inthis case,a10μF,lowESRceramiccapacitorisrecommended. OutputcapacitorCOUT The output capacitor is selected to handle the output ripple noise requirements. Both steady state ripple and transient requirements must be taken into consideration when selecting this capacitor. For the best performance, it is recommended to use X5R or a better grade ceramic capacitor greater than 22 µF capacitance. OutputinductorL Thereareseveralconsiderations inchoosingthisinductor. 1) Choose the inductanceto provide the desired ripple current.It is suggested to choose the ripple current to beabout40%ofthemaximumoutputcurrent.Theinductanceiscalculatedas: 40%If )/VV(1V MAXOUT,SW MAXIN,OUTOUT (3) wherefsw istheswitchingfrequencyandIOUT,MAX isthemaximumloadcurrent.TheDIG69130regulatorICis quite tolerant of different ripple current amplitude. Consequently, the final choice of inductance can be slightlyoffthecalculationvaluewithoutsignificantlyimpactingtheperformance. 2) The saturation current rating of the inductor must be selected to be greater than the peak inductor current under fullloadconditions. ISAT,MIN >IOUT,MAX + Lf2 )/VV(1V SW MAXIN,OUTOUT (4) 3) The DCR of the inductor and the core loss at the switching frequency must be low enough to achieve the desired efficiency requirement. It is desirable to choose an inductor with DCR < 50 mΩ to achieve a good overall efficiency.

www.dioo.com ©2024DiooMicrocircuitsCo.,Ltd.Jiangsu DIG69130•V1.6 High-Efficiency3A,24VInputSynchronousStepDownConverter DIG69130Recommended Table: VOUT(V) R2(kΩ) C2(pF) L1/PartNumber 1 150 22(option) 2.2μH/SWPA6045S2R2NT(VLP6045-2R2M) 1.2 100 22(option) 2.2μH/SWPA6045S2R2NT(VLP6045-2R2M) 1.8 49.9 22(option) 3.3μH/SWPA8040S3R3NT(VLP6045-3R3M) 2.5 31.6 22(option) 3.3μH/SWPA8040S3R3NT(VLP6045-3R3M) 3.3 22.1 22(option) 4.7μH/SWPA8040S4R7NT(CDRH8D43-4R7) 5 13.7 22(option) 6.8μH/SWPA8040S6R8MT(CDRH8D43-6R8) LayoutDesign: The layout design of DIG69130 regulator is relatively simple. For the best efficiency and minimum noise problems,placethefollowing components closetotheIC:CIN,L1,R1andR2. 1) Maximize the PCB copper area connected to the GND pin to achieve the best thermal and noise performance.Iftheboardspaceallows,agroundplaneishighlydesirable. 2)CIN mustbeclosetoINand GNDpins.TheloopareaformedbyCIN andGNDmustbeminimized. 3)ThePCBcopperareaassociatedwithLXpinmustbeminimizedtoavoidthepotential noiseproblem. 4)ThecomponentsR1andR2,and thetraceconnectedtotheFBpinmustNOTbeadjacent totheLX neton thePCB layouttoavoidthenoiseproblem. 5) Ifthe system chip interfacing with the EN pin has a high impedance state atshutdown mode and the INpin is connected directly to a power source such as a Li-Ion battery, it is desirable to add a pull-down 1 MΩ resistorbetweentheENandGNDpinstopreventthenoisefromfalselyturningontheregulatoratshutdown mode.

www.dioo.com ©2024DiooMicrocircuitsCo.,Ltd.Jiangsu DIG69130•V1.6 High-Efficiency3A,24VInputSynchronousStepDownConverter PhysicalDimensions:TSOT23-6 CommonDimensions (Unitsofmeasure=Millimeter) Symbol Min Nom Max D 2.80 2.90 3.00 E 2.60 2.80 3.00 E1 1.50 1.60 1.70 e1 1.80 1.90 2.00 A 0.60 0.80 1.00 e 0.85 0.95 1.05 b 0.30 0.40 0.50 H 0.30 0.45 0.60 I - - 0.20 J 0 - 0.15 Θ 0° - 8°

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