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2010201120122013••LMR10510LMR10510采用SOT-23和LLP封装的SIMPLESWITCHER®5.5V输入电压、1A降压稳压器文献编号：ZHCSA20ALMR10510October31,2011SIMPLESWITCHER®5.5Vin,1AStep-DownVoltageRegulatorinSOT-23andLLPFeatures■Inputvoltagerangeof3Vto5.5V■Outputvoltagerangeof0.6Vto4.5V■Outputcurrentupto1A■1.6MHz(LMR10510X)and3MHz(LMR10510Y)switchingfrequencies■LowshutdownIq,30nAtypical■Internalsoft-start■Internallycompensated■Current-ModePWMoperation■Thermalshutdown■SOT23-5(2.92x2.84x1mm)andLLP-6(3x3x0.8mm)packaging■FullyenabledforWEBENCH®PowerDesignerPerformanceBenefits■Extremelyeasytouse■TinyoverallsolutionreducessystemcostApplications■Point-of-LoadConversionsfrom3.3V,and5VRails■SpaceConstrainedApplications■BatteryPoweredEquipment■IndustrialDistributedPowerApplications■PowerMeters■PortableHand-HeldInstrumentsSystemPerformanceEfficiencyvsLoadCurrent-XVIN=5V0.00.10.20.30.40.50.60.70.80.91.0405060708090100EFFICIENCY(%)LOADCURRENT(A)1.8Vout3.3Vout30165696EfficiencyvsLoadCurrent-YVIN=5V0.00.10.20.30.40.50.60.70.80.91.0405060708090100EFFICIENCY(%)LOADCURRENT(A)1.8Vout3.3Vout30165697TypicalApplication30165664©2011TexasInstrumentsIncorporated301656®5.5Vin,1AStep-DownVoltageRegulatorinSOT-23andLLP2011年10月31日采用SOT-23和LLP封装的SIMPLESWITCHER®5.5V输入电压、1A降压稳压器LMR10510采用SOT-23和LLP封装的SIMPLESWITCHER®5.5V输入电压、1A降压稳压器LMR10510特性•输入电压范围：3V至5.5V•输出电压范围：0.6V至4.5V•输出电流高达1A•1.6MHz(LMR10510X)和3MHz(LMR10510Y)开关频率•低停机静态电流(Iq)：30nA（典型值）•内部软起动•内部补偿•电流模式脉宽调制(PWM)操作•具有热关断功能•SOT23-5(2.92x2.84x1mm)和LLP-6(3x3x0.8mm)封装•得到WEBENCH®PowerDesigner工具的全面支持系统性能典型应用性能优势•易用性极佳•纤巧的总体解决方案降低了系统成本应用•从3.3V和5V电源轨的负载点转换•空间受限型应用•电池供电型设备•工业分布式电源应用•功率表•便携手持式仪器效率与负载电流的关系曲线－“X”VIN=5V效率与负载电流的关系曲线－“Y”VIN=5VConnectionDiagrams301656016-PinLLP301656035-PinSOT-23OrderingInformationOrderNumberFrequencyOptionPackageTypeNSCPackageDrawingTopMarkSuppliedAsLMR10510XMFE1.6MHzSOT23-5MF05ASH7B250unitsTapeandReelLMR10510XMF1000unitsTapeandReelLMR10510XMFX3000unitsTapeandReelLMR10510YMFE3MHzSH9B250unitsTapeandReelLMR10510YMF1000unitsTapeandReelLMR10510YMFX3000unitsTapeandReelLMR10510YSDELLP-6SDE06AL268B250unitsTapeandReelLMR10510YSD1000unitsTapeandReelLMR10510YSDX4500unitsTapeandReel，带装和卷装LMR10510XMF1000，带装和卷装LMR10510XMFX3000，带装和卷装LMR10510YMFE3MHzSH9B250，带装和卷装LMR10510YMF1000，带装和卷装LMR10510YMFX3000，带装和卷装LMR10510YSDELLP-6SDE06AL268B250，带装和卷装LMR10510YSD1000，带装和卷装LMR10510YSDX4500，带装和卷装连线图订购信息PinDescriptions5-PinSOT23PinNameFunction1SWSwitchnode.Connecttotheinductorandcatchdiode.2GNDSignalandpowergroundpin.Placethebottomresistorofthefeedbacknetworkascloseaspossibletothispin.3FBFeedbackpin.Connecttoexternalresistordividertosetoutputvoltage.4ENEnablecontrolinput.Logichighenablesoperation.DonotallowthispintofloatorbegreaterthanVIN+0.3V.5VINInputsupplyvoltage.PinDescriptions6-PinLLPPinNameFunction1FBFeedbackpin.Connecttoexternalresistordividertosetoutputvoltage.2GNDSignalandpowergroundpin.Placethebottomresistorofthefeedbacknetworkascloseaspossibletothispin.3SWSwitchnode.Connecttotheinductorandcatchdiode.4VINDPowerInputsupply.5VINAControlcircuitrysupplyvoltage.ConnectVINAtoVINDonPCboard.6ENEnablecontrolinput.Logichighenablesoperation.DonotallowthispintofloatorbegreaterthanVINA+0.3V.DAPDieAttachPadConnecttosystemgroundforlowthermalimpedance,butitcannotbeusedasaprimaryGNDconnection.3开关节点。连接至电感器和箝位二极管。2GND信号和电源接地引脚。将反馈网络的底端电阻器布设在尽可能靠近该引脚的地方。3FB反馈引脚。连接至外部电阻分压器，以设定输出电压。4EN使能控制输入。当该引脚为逻辑高电平时，将使能器件操作。不得允许此引脚浮置或高于VIN+0.3V。5VIN输入电源电压。6引脚LLP封装的引脚说明引脚名称功能1FB反馈引脚。连接至外部电阻分压器，以设定输出电压。2GND信号和电源接地引脚。将反馈网络的底端电阻器布设在尽可能靠近该引脚的地方。3SW开关节点。连接至电感器和箝位二极管。4VIND输入电源。5VINA控制电路电源电压。在PC板上将VINA连接至VIND。6EN使能控制输入。当该引脚为逻辑高电平时，将使能器件操作。不得允许此引脚浮置或高于VINA+0.3V。DAP芯片粘接焊盘连接至系统地以实现低的热阻抗，但它不可被用作一个主GND连接。AbsoluteMaximumRatings(Note1)IfMilitary/Aerospacespecifieddevicesarerequired,pleasecontacttheTexasInstrumentsSalesOffice/Distributorsforavailabilityandspecifications.VIN-0.5Vto7VFBVoltage-0.5Vto3VENVoltage-0.5Vto7VSWVoltage-0.5Vto7VESDSusceptibility2kVJunctionTemperature(Note2)150°CStorageTemperature−65°Cto+150°CForsolderingspecifications:seeproductfolderat−40°Cto+125°CElectricalCharacteristics(Note3),(Note4)VIN=5VunlessotherwiseindicatedundertheConditionscolumn.LimitsinstandardtypeareforTJ=25°Conly;limitsinboldfacetypeapplyoverthejunctiontemperature(TJ)rangeof-40°Cto+125°C.MinimumandMaximumlimitsareguaranteedthroughtest,design,orstatisticalcorrelation.TypicalvaluesrepresentthemostlikelyparametricnormatTJ=25°C,andareprovidedforreferencepurposesonly.SymbolParameterConditionsMinTypMaxUnitsVFBFeedbackVoltage0.5880.6000.612VΔVFB/VINFeedbackVoltageLineRegulationVIN=3Vto5V0.02%/VIBFeedbackInputBiasCurrent0.1100nAUVLOUndervoltageLockoutVINRising2.732.90VVINFalling1.852.3UVLOHysteresis0.43VFSWSwitchingFrequencyLMR10510-X1.21.61.95MHzLMR10510-Y2.253.03.75DMAXMaximumDutyCycleLMR10510-X8694%LMR10510-Y8290DMINMi