10PowerSupplyRecommendations
TheinputsupplytotheLM1117mustbekeptatavoltagelevelsuchthatitsmaximumratingisnotexceeded.TheminimumdropoutvoltagemustalsobemetwithextraheadroomwhenpossibletokeeptheLM1117inregulation.Aninputcapacitorisrecommended.Formoreinformationregardingcapacitorselection,refertoExternalCapacitors.
11Layout
11.1LayoutGuidelines
Somelayoutguidelinesmustbefollowedtoensureproperregulationoftheoutputvoltagewithminimumnoise.TracescarryingtheloadcurrentmustbewidetoreducetheamountofparasitictraceinductanceandthefeedbackloopfromVOUTtoADJmustbekeptasshortaspossible.ToimprovePSRR,abypasscapacitorcanbeplacedattheADJpinandmustbelocatedascloseaspossibletotheIC.IncaseswhenVINshortstoground,anexternaldiodemustbeplacedfromVOUTtoVINtodivertthesurgecurrentfromtheoutputcapacitorandprotecttheIC.ThediodemustbeplacedclosetothecorrespondingICpinstoincreasetheireffectiveness.11.1.1HeatsinkRequirements
Whenanintegratedcircuitoperateswithanappreciablecurrent,itsjunctiontemperatureiselevated.Itisimportanttoquantifyitsthermallimitsinordertoachieveacceptableperformanceandreliability.Thislimitisdeterminedbysummingtheindividualpartsconsistingofaseriesoftemperaturerisesfromthesemiconductorjunctiontotheoperatingenvironment.Aone-dimensionalsteady-statemodelofconductionheattransferisdemonstratedinFigure22.Theheatgeneratedatthedevicejunctionflowsthroughthedietothedieattachpad,throughtheleadframetothesurroundingcasematerial,totheprintedcircuitboard,andeventuallytotheambientenvironment.Belowisalistofvariablesthatmayaffectthethermalresistanceandinturntheneedforaheatsink.
Table1.ComponentandApplicationVariables
RθJC(COMPONENTVARIABLES)
LeadframeSizeandMaterialNo.ofConductionPinsDieSize
DieAttachMaterial
MoldingCompoundSizeandMaterial
RθJA(APPLICATIONVARIABLES)
MountingPadSize,Material,andLocationPlacementofMountingPadPCBSizeandMaterialTracesLengthandWidthAdjacentHeatSourcesVolumeofAirAmbientTemperatueShapeofMountingPad
Thecasetemperatureismeasuredatthepointwheretheleadscontactwiththemountingpadsurface
Figure22.Cross-SectionalViewofIntegratedCircuitMountedonaPrintedCircuitBoard
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PACKAGE OPTION ADDENDUM
11-Jan-2021
PACKAGING INFORMATION
Orderable DeviceStatus(1)Package TypePackagePinsPackageDrawingQtyTO-252TO-252TO-252TO-252TO-252TO-252TO-252TO-252TO-252TO-252TO-252TO-252TO-252TO-252TO-252TO-252WSONNDPNDPNDPNDPNDPNDPNDPNDPNDPNDPNDPNDPNDPNDPNDPNDPNGN333333333333333387575757575250025002500250025007575752500250025001000Eco Plan(2)Lead finish/Ball material(6)MSL Peak Temp(3)Op Temp (°C)Device Marking(4/5)SamplesLM1117DT-1.8/NOPBLM1117DT-2.5/NOPBLM1117DT-3.3/NOPBLM1117DT-5.0/NOPBLM1117DT-ADJ/NOPBLM1117DTX-1.8/NOPBLM1117DTX-2.5/NOPBLM1117DTX-3.3/NOPBLM1117DTX-5.0/NOPBLM1117DTX-ADJ/NOPBLM1117IDT-3.3/NOPBLM1117IDT-5.0/NOPBLM1117IDT-ADJ/NOPBLM1117IDTX-3.3/NOPBLM1117IDTX-5.0/NOPBLM1117IDTX-ADJ/NOPBLM1117ILD-ADJ/NOPBACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVERoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenSNSNSNSNSNSNSNSNSNSNSNSNSNSNSNSNSNLevel-2-260C-1 YEARLevel-2-260C-1 YEARLevel-2-260C-1 YEARLevel-2-260C-1 YEARLevel-2-260C-1 YEARLevel-2-260C-1 YEARLevel-2-260C-1 YEARLevel-2-260C-1 YEARLevel-2-260C-1 YEARLevel-2-260C-1 YEARLevel-2-260C-1 YEARLevel-2-260C-1 YEARLevel-2-260C-1 YEARLevel-2-260C-1 YEARLevel-2-260C-1 YEARLevel-2-260C-1 YEARLevel-3-260C-168 HR0 to 1250 to 1250 to 1250 to 1250 to 1250 to 1250 to 1250 to 1250 to 1250 to 125-40 to 125-40 to 125-40 to 125-40 to 125-40 to 125-40 to 125-40 to 125LM1117DT-1.8LM1117DT-2.5LM1117DT-3.3LM1117DT-5.0LM1117DT-ADJLM1117DT-1.8LM1117DT-2.5LM1117DT-3.3LM1117DT-5.0LM1117DT-ADJLM1117IDT-3.3LM1117IDT-5.0LM1117IDT-ADJLM1117IDT-3.3LM1117IDT-5.0LM1117IDT-ADJ1117IADAddendum-Page 1
PACKAGE OPTION ADDENDUM
11-Jan-2021
Orderable DeviceStatus(1)Package TypePackagePinsPackageDrawingQtySOT-223SOT-223SOT-223SOT-223SOT-223SOT-223WSONWSONWSONWSONWSONWSONSOT-223SOT-223SOT-223SOT-223SOT-223SOT-223SOT-223SOT-223SOT-223DCYDCYDCYDCYDCYDCYNGNNGNNGNNGNNGNNGNDCYDCYDCYDCYDCYDCYDCYDCYDCY444444888888444444444100010001000200020002000100010001000100045004500100010001000100010002000200020002000Eco Plan(2)Lead finish/Ball material(6)MSL Peak Temp(3)Op Temp (°C)Device Marking(4/5)SamplesLM1117IMP-3.3/NOPBLM1117IMP-5.0/NOPBLM1117IMP-ADJ/NOPBLM1117IMPX-3.3/NOPBLM1117IMPX-5.0/NOPBLM1117IMPX-ADJ/NOPBLM1117LD-1.8/NOPBLM1117LD-2.5/NOPBLM1117LD-3.3/NOPBLM1117LD-ADJ/NOPBLM1117LDX-1.8/NOPBLM1117LDX-ADJ/NOPBLM1117MP-1.8/NOPBLM1117MP-2.5/NOPBLM1117MP-3.3/NOPBLM1117MP-5.0/NOPBLM1117MP-ADJ/NOPBLM1117MPX-1.8/NOPBLM1117MPX-2.5/NOPBLM1117MPX-3.3LM1117MPX-3.3/NOPBACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVEACTIVERoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenRoHS & GreenNon-RoHS& GreenRoHS & GreenSNSNSNSNSNSNSNSNSNSNSNSNSNSNSNSNSNSNSNCall TISNLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-3-260C-168 HRLevel-3-260C-168 HRLevel-3-260C-168 HRLevel-3-260C-168 HRLevel-3-260C-168 HRLevel-3-260C-168 HRLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMLevel-1-260C-UNLIMCall TILevel-1-260C-UNLIM-40 to 125-40 to 125-40 to 125-40 to 125-40 to 125-40 to 1250 to 1250 to 1250 to 1250 to 1250 to 1250 to 1250 to 1250 to 1250 to 1250 to 1250 to 1250 to 1250 to 125N05BN06BN03BN05BN06BN03B1117-181117-251117-331117ADJ1117-181117ADJN12AN13AN05AN06AN03AN12AN13AN05A0 to 125N05AAddendum-Page 2
PACKAGEMATERIALSINFORMATION
12-May-2020
PackMaterials-Page1
PACKAGEMATERIALSINFORMATION
12-May-2020
Device
PackagePackagePinsTypeDrawingWSONWSONWSONSOT-223SOT-223SOT-223SOT-223SOT-223
NGNNGNNGNDCYDCYDCYDCYDCYDCYDCYDCYDCYDCYDCYKTTKTTKTT
88844444444444333
SPQ
ReelReelA0DiameterWidth(mm)(mm)W1(mm)178.0330.0330.0330.0330.0330.0330.0330.0330.0330.0330.0330.0330.0330.0330.0330.0330.0
12.412.412.416.416.416.416.416.416.416.416.416.416.416.424.424.424.4
4.34.34.37.07.07.07.07.07.07.07.07.07.07.010.7510.7510.75
B0(mm)4.34.34.37.57.57.57.57.57.57.57.57.57.57.514.8514.8514.85
K0(mm)1.31.31.32.22.22.22.22.22.22.22.22.22.22.25.05.05.0
P1(mm)8.08.08.012.012.012.012.012.012.012.012.012.012.012.016.016.016.0
WPin1(mm)Quadrant12.012.012.016.016.016.016.016.016.016.016.016.016.016.024.024.024.0
Q1Q1Q1Q3Q3Q3Q3Q3Q3Q3Q3Q3Q3Q3Q2Q2Q2
LM1117LD-ADJ/NOPBLM1117LDX-1.8/NOPBLM1117LDX-ADJ/NOPBLM1117MP-1.8/NOPBLM1117MP-2.5/NOPBLM1117MP-3.3/NOPBLM1117MP-5.0/NOPBLM1117MP-ADJ/NOPB
10004500450010001000100010001000200020002000200020002000500500500
LM1117MPX-1.8/NOPBSOT-223LM1117MPX-2.5/NOPBSOT-223
LM1117MPX-3.3
SOT-223
LM1117MPX-3.3/NOPBSOT-223LM1117MPX-5.0/NOPBSOT-223LM1117MPX-ADJ/NOPBSOT-223LM1117SX-3.3/NOPBLM1117SX-5.0/NOPBLM1117SX-ADJ/NOPB
DDPAK/TO-263DDPAK/TO-263DDPAK/TO-263
PackMaterials-Page2
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