电脑芯片级维修教程笔记本元器件

(QFN−32)1314151628272625VBST1DRVH1LL1DRVL1VBST2DRVH2LL2DRVL217PGND28VO27COMP26VFB25GND4VREF23VFB12COMP11VO118CS219VREG320V5FILT21V5REG22VIN23CS124PGND1C30NA+VO15V/6AQ2IRF7832Q1IRF7821−VO1_GNDPGND1VBAT+VO23.3V/6AQ4IRF7832Q3IRF7821−VO2_GNDPGND2VBATVBATGNDPowerPADR505.1WV5FILTEN_1P_GOOD1P_GOOD2EN_2EN_LDO5EN_LDO3GNDR11100kΩC1020µFL14.7µHC1B150µFC1A150µFC110.1µFC311nFR21100kΩC210.1µFC1020µFL22.2µHC2A150µFC2B150µFR223.3kΩR123.6kΩC511µFC5010µFC3010µFUDG−05074TPS51120SLUS670A–JULY2005–REVISEDAUGUST2005DUALCURRENTMODE,SYNCHRONOUSSTEP-DOWNCONTROLLERWITH100-mASTANDBYREGULATORSFORNOTEBOOKSYSTEMPOWER•3.3-Vand5-V100-mABootstrappedStandbyTheTPS51120isahighlysophisticateddualcurrentRegulatorswithIndependentEnablesmodesynchronousstep-downcontroller.Itisafullfeaturedcontrollerdesignedtorundirectlyoffathree-•SelectableD-CAP®ModeEnablesFastorfour-cellLi-ionbatteryandprovidehigh-powerandTransientResponseLessthan100ns5-Vand/or3.3-Vstandbyregulationforallthedown-•SelectableLowRippleCurrentModestreamcircuitryinanotebookcomputersystem.High•Lessthan1%InternalReferenceAccuracycurrent,100-mA,5-Vor3.3-Von-boardlinearregu-latorshaveglitch-freeswitchoverfunctiontoSMPS•SelectablePWM-only/Auto-skipModesandcanbekeptaliveindependentlyduringstandby•Low-sideRDS(on)Loss-lessCurrentSensingstate.Thepseudo-constantfrequencyadaptive•RSENSEAccurateCurrentSenseOptionon-timecontrolschemesupportsfullrangeofcurrentmodeoperationincludingsimplifiedloopcompen-•InternalSoft-startandIntegratedVOUTsation,ceramicoutputcapacitorsaswellasseamlessDischargeTransistorstransitiontoreducedfrequencyoperationatlight-load•Integrated2-VReferencecondition.OptionalD-CAP™modeoperation•AdaptiveGateDriverswithIntegratedBoostoptimizedforSP-CAPorPOSCAPoutputcapacitorsDiodeallowsfurtherreductionofexternalcompensationparts.DynamicUVPsupportsVINlinesagwithout•PowerGoodforEachChannelwithDelaylatchoffbyhitting5VUVP.NonegativevoltageTimerappearsatoutputvoltagenodeduringUVLO,UVP,•FaultDisableModeandOCP,OTPorlossofVIN.•SupplyInputVoltageRange:4.5Vto28VTheTPS5112032-pinQFNpackageisspecifiedfrom–40°Cto85°Cambienttemperature.•NotebookComputersSystemBusandI/OPleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.D-CAPisaregisteredtrademarkofTexasInstruments.PRODUCTIONDATAinformationiscurrentasofpublicationdate.Copyright©2005,TexasInstrumentsIncorporatedProductsconformtospecificationsperthetermsoftheTexasInstrumentsstandardwarranty.Productionprocessingdoesnotnecessarilyincludetestingofallparameters.(1)DISSIPATIONRATINGSTPS51120SLUS670A–JULY2005–REVISEDAUGUST2005ORDERINGINFORMATION(1)(2)ORDERABLEMINIMUMOUTPUTTAPACKAGEPARTPINSORDERECOPLANSUPPLYNUMBERQUANTITYTPS51120RHBTTape-and-reel250PLASTICQUADGreen-40°Cto85°C32FLATPACK(QFN)(RoHSandnoSb/Br)TPS51120RHBRTape-and-reel3000(1)AllpackagingoptionshaveCuNIPdAulead/ballfinish.(2)Forthemostcurrentpackageandorderinginformation,seethePackageOptionAddendumattheendofthisdocument,orseetheTIwebsiteat(wrtLL)-0.3to6LL1,LL2-1to30OutputvoltagerangeVVREF2,VREG3,VREG5,PGOOD1,PGOOD2,DRVL1,DRVL2,COMP1,-0.3to6COMP2PGND1,PGND2-0.3to0.3VREF21Source/sinkcurrentVBST100mAVREG5,VREG3(sourceonly)200TAOperatingambienttemperaturerange-40to85TstgStoragetemperature-55to150°CTJJunctiontemperature-40to125Leadtemperature1.6mm(1/16inch)fromcasefor10seconds255(1)Stressesbeyondthoselistedunderabsolutemaximumratingsmaycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderrecommendedoperatingconditionsisnotimplied.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.Allvoltagevaluesarewithrespecttothenetworkgroundterminalunlessotherwisenoted.DERATINGFACTORTA=85°CTA25°CPOWERRATINGPACKAGEABOVETA=25°CPOWERRATING(W)(W/°C)(W)32-pinQFN(1)2.60.0261.032-pinQFN(2)2.90.0291.2(1)JEDECstandardPCB.(2)Enhancedthermalconductanceby3x3thermalviasbeneaththermalpad.2–JULY2005–REVISEDAUGUST2005MINMAXUNITInputvoltage,V5FILT4.55.5VVBST1,VBST2-0.134VBST1,VBST2wrtLL-0.15.5InputvoltagerangeVIN,EN5-0.128VSKIPSEL,TONSEL,EN1,EN2,CS1,CS2,V5FILT,VFB1,VFB2,EN3-0.15.5VO1,VO2-0.15.5DRVH1,DRVH2-0.834DRVH1,DRVH2(wrtLL)-0.15.5LL1,LL2-0.828OutputvoltagerangeVVREF2,VREG5,VREG3,PGOOD1,PGOOD2,DRVL1,DRVL2,COMP1,-0.15.5COMP2PGND1,PGND2-0.10.1VREF20.08Source/sinkcurrentVBST50mAVREG5,VREF3(sourceonly)100Operatingambienttemperaturerange,TA-4085°C3–JULY2005–REVISEDAUGUST2005overoperatingf