标签: Diodes
相关博文
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Diodes公司 (Diodes Incorporated) 推出六款高性能霍尔效应传感器开关，旨在为多种消费性产品、家电及工业设备内的位置和接近检测功能节省电源。这些开关的性能经过优化，能够在1.6V到3.6V供电电压范围内使用，并利用休眠定时系统把功耗减到最低。新器件在1.8V供电下，一般平均供电电流为4.3μA。 这个微功率霍尔效应产品系列包括中敏感度AH1895全极性开关、高敏感度AH1893、AH1897和AH1812全极性开关、可编程高敏感度AH1894全极性开关，以及高敏感度AH3360单极性 (南极) 开关。这些简单的器件采用有效节省空间的超薄X1-DFN1216-4 (1.2mm x 1.6mm x 0.5mm) 封装，以及SOT553 (1.6mm x 1.6mm x 0.5mm) 引脚封装。 Diodes推出省电霍尔开关 除了AH1812以外，其余器件都具有推挽输出结构，能够减少外部元件数量，以及简化印刷电路板布线。AH1812则带来开漏极输出选择，在系统上拉的情况下增加灵活性。 这些高度集成的器件采用了斩波稳定设计，在-40oC到+85oC的工作温度范围内提升温度稳定性和应力承受能力，还把温漂减到最低。此外，防静电能力高达8kV，使产品更坚固耐用，易于生产操作。 可编程的AH1894进一步提升设计灵活性，让用户能够利用灵敏度选择引脚，在两个磁敏感度范围当中进行选择，从而使器件能适用于不同强度和距离的磁铁。灵敏度可通过微处理器等外部逻辑源进行编程选择。 《电子技术设计》网站版权所有，谢绝转载
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Diodes公司 (Diodes Incorporated) 推出行业首款采用了DFN0806-3微型封装的小信号双极型晶体管。这些器件的占位面积为0.48mm2，离板厚度仅0.4mm，面积比采用了DFN1006、SOT883和SOT1123封装的同类型器件少20%。 这些晶体管尺寸小，加上卓越的400mW功耗，有利于智能手机和平板电脑等受空间限制的便携式产品的设计。Diodes破天荒推出两对采用了DFN0806-3封装的NPN (MMBT3904FA和BC847BFA) 及PNP (MMBT3906FA和BC857BFA) 晶体管，随后将推出在同样封装的预偏置 (数字) 晶体管。 Diodes推出行业最小双极型晶体管 NPN MMBT3904FA及PNP MMBT3906FA晶体管的VCE额定值为40V，能够处理200mA连续电流，以及支持500mA脉冲峰值电流。NPN BC847BFA 和 PNP BC857BFA器件的额定值则为45V，并可处理100mA连续电流及200mA脉冲电流。 《电子技术设计》网站版权所有，谢绝转载
相关资源
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基于DiodesAP43771&安森美半导体NCP81239PD3.0车用充电方案.zip
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基于DiodesAP43771&安森美半导体NCP81239PD3.0车用充电方案
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基于DiodesAP43771&安森美半导体NCP81239PD3.0车用充电方案
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基于DiodesAP43771&安森美半导体NCP81239PD3.0车用充电方案.pdf
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4ChannelESDProtectionDiodesforSuperSpeed
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LTC4412提供了一种简单方式实现低损耗理想二极管控制器，延长了电源寿命，减小了自身的发热量。外部所需元件的数目少易于实现低成本，小封装有利于实现高密度设计。其多功能性在许多应用领域中极具应用价值。advertisementIdealDiodeControllerEliminatesEnergyWastingDiodesinPowerOR-ingApplications……
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LTC4412提供了一种简单方式实现低损耗理想二极管控制器，延长了电源寿命，减小了自身的发热量。外部所需元件的数目少易于实现低成本，小封装有利于实现高密度设计。其多功能性在许多应用领域中极具应用价值。advertisementIdealDiodeControllerEliminatesEnergyWastingDiodesinPowerOR-ingApplications……
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在双电源供电应用中，供电连接可能被错误地连接，这可导致负载受到损坏。采用LTC4355和LTC44354构成的理想二极管保护方案可提供类似于肖特基二极管的保护模式，但具有更低的功耗，并且布局紧凑、效率提高。IdealDiodesProtectAgainstPowerSupplyWiringErrorsDesignNote444MeilissaLumIntroductionsucherrors.WiringerrorscouldincludereversepolarityHighavailabilitysystemsoftenemploydualfeedpowerorcross-feedconnections.Knowingthis,circuitdesign-distributiontoachieveredundancyandenhancesystemersareaccustomedtousingdiscretediodesolutionstoreliability.ORingdiodesjointhefeedstogetherattheprotectagainstsuchmishaps.Itisimportantthatactivepointofload,mostoftenusingSchottkydiodesforlow……
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封装-含图PACKAGEOUTLINESPackageSurface-mountPageSC59(SOT346)yes....SC70-3(SOT323)yes....SO20(SOT163-1)yes....SOD27(DO-35)no....SOD57no....SOD61Ano....SOD61ABno....SOD61ACno....SOD61ADno....SOD61AEno....SOD61AFno....SOD61AGno....SOD61AHno....SOD61AIno....SOD61AJno....SOD61A……
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Asmobiledevicesaddmorefunctionality,theneedtocommunicatewithPCsandotherdigitalproductsisincreasing.ManyofthemobiledevicestodayofferseveralI/Oportsfordatacommunication.Forsuchmobiledevices,ESDprotectionisbecomingacriticalsystemrequirement.……
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Abstract:Current-senseamplifiersnormallyoperatewellaboveground,butafaultconditioncandrivethesenseinputsbelowground,damagingthedevicebydrawingexcessivecurrentthroughtheESD-protectiondiodes.Thiscircuitprotectsaparticularhigh-sidecurrent-senseamplifier(MAX4080)byconnectingPMOSblockingtransistorsinserieswitheachinput.Maxim>Designsupport>Appnotes>AmplifierandComparatorCircuits>APP4837Maxim>Designsupport>Appnotes>CircuitProtection>APP4837Keywords:current-senseamplifiers,negativefaultvoltage,ESD-protectiondiodesFeb09,2011APPLICATIONNOTE4837ProtectCurrent-SenseAmplifiersfromNegativeOvervoltageBy:ArpitMehta,StrategicApplicationsEngineerPrashanthHolenarsipurAbstract:Current-senseamplifiersnormallyoperatewellaboveground,butafaultconditioncandrivethesenseinputsbelowground,damagingthedevicebydrawingexcessivecurrentthroughtheESD-protectiondiodes.Thiscircuitprotectsaparticularhigh-sidecurrent-sense……
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电路窃取从并行端口，功率为8mA在5V提供效率高达94%。Maxim>AppNotes>AMPLIFIERANDCOMPARATORCIRCUITSPOWER-SUPPLYCIRCUITSKeywords:powerconversion,parallelport,stepupswitchingconverter,SchottkydiodesMar14,2005APPLICATIONNOTE3468High-EfficiencyStep-UpConverterRobsParallelPortAbstract:Circuitincludingastep-upswitchingconverterstealspowerfromaparallelport,providing5Vat8mAwithefficiencyashighas94%.ThecircuitofFigure1stealsenergyfromaparallelportorfromanylimited-energysource.Suchpower-conversionapplicationsusuallyrequireveryhighefficiencyformakinguseoftheenergyavailable.Aparallel-dataport,forinstance,providesasmuchas2.6mAperdatalineat2.4V.Whentheeightdatalinesaresoftware-configuredtoFFHEX(allhigh),thatconditi……
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摘要：下面的讨论中介绍了Maxim的新的并行检测故障保护架构的优势超过传统的系列场效应管的方法。Maxim>AppNotes>SWITCHESANDMULTIPLEXERSKeywords:fault-protection,analogswitch,CMOSanalogmultiplexers,overvoltage,zenerclamp,parallelMar25,2001sense,seriesprotectiondiodes,faultprotectedswitches,analogmultiplexerAPPLICATIONNOTE745Fault-TolerantAnalogSwitchesAbstract:ThefollowingdiscussiondescribestheadvantagesofMaxim'snewparallelsensefault-protectionarchitectureoverthetraditionalseries-FETsapproach.Incertainapplications,boarddesignersaddcircuitrytoprotectanalog-switchinputsfromvoltagesthatexceedthesupplyrails.Whenthesevoltagesarepresent,notonlymusttheswitchsurvivethem,butalso―toprotectthecircuitrydownstreamfromtheswitch―thevoltagefromtheswitch'soutputmustremainwithinitssupplyrails.……
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摘要：当使用外部的热敏二极管测量温度，温度测量的精度上取决于外部二极管的特性。两个关键的参数会影响测量精度是理想因子和系列电阻。本应用指南对远程温度传感器测量结果解释这些参数的影响，并讨论了如何确定补偿及其影响因素。Maxim>AppNotes>AutomotiveTemperatureSensorsandThermalManagementKeywords:temperaturesensor,ideality,thermaldiode,thermalsensediodes,tempsensor,remotetempsensor,sensors,thermal,Sep05,2002temperatuer,temperatureAPPLICATIONNOTE1057CompensatingforIdealityFactorandSeriesResistanceDifferencesbetweenThermal-SenseDiodesAbstract:Whenusinganexternalthermaldiodetomeasuretemperature,theaccuracyofthetemperaturemeasurementdependsonthecharacteristicsoftheexternaldiode.Twocriticalparametersthataffectmeasurementaccuracyareidealityfactorandseriesresistance.Thisapplicationnoteexplainstheeffectsoftheseparametersonremotetemperature-sensormeasurementsanddiscusseshowtodeterminecompensationfactorsfortheir……
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摘要：电流检测放大器通常远高于地面操作，但故障条件下可以推动地面以下的感觉输入，绘制通过ESD保护二极管的电流过大损坏设备。该电路保护系列晶体管，每个输入连接PMOS管阻塞特定的高边电流检测放大器（MAX4080）。Maxim>Designsupport>Appnotes>AmplifierandComparatorCircuits>APP4837Maxim>Designsupport>Appnotes>CircuitProtection>APP4837Keywords:current-senseamplifiers,negativefaultvoltage,ESD-protectiondiodesFeb09,2011APPLICATIONNOTE4837ProtectCurrent-SenseAmplifiersfromNegativeOvervoltageBy:ArpitMehta,StrategicApplicationsEngineerPrashanthHolenarsipurAbstract:Current-senseamplifiersnormallyoperatewellaboveground,butafaultconditioncandrivethesenseinputsbelowground,damagingthedevicebydrawingexcessivecurrentthroughtheESD-protectiondiodes.Thiscircuitprotectsaparticularhigh-sidecurrent-sense……
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摘要：本文讨论了电磁干扰（EMI）的来源。它描述了气体避雷器，压敏电阻，抑制二极管，电感和铁氧体，电容器，串联电阻的设计如何保护设备。EMI测试方法进行了阐述。Maxim>AppNotes>CircuitprotectionGeneralengineeringtopicsPrototypingandPC-boardlayoutKeywords:EMI,EMIprotection,electricalnoise,ESD,gasarrestor,varistor,suppressordiodes,chokes,ferrites,capacitors,seriesresistors,Aug21,2002thermocouple,angularencodres,EMIimmunitytesting,motorcontrolAPPLICATIONNOTE1167PracticalAspectsofEMIProtectionAbstract:Articlediscussesthesourcesofelectromagneticinterference(EMI).Itdescribeshowdesignswithgasarrestors,avaristor,suppressordiodes,chokesandferrites,capacitors,orseriesresistorsprotectequipment.MethodsforEMItestingaredescribed.IntroductionMoreandmoreaspectsofourlivesdependontheuninterruptedoperationofelectronicequipmentandappliances."Drivebywire"and"……
