一级代理MP2119，MP2119/MP2119DQ集成了100mΩ的高侧开关和一个100mΩ的同步整流器,没有一个***率的外部肖特基二极管的峰值电流模式控制及内部补偿。MP2119/MP2119DQ基础的解决方案提供了一个非常紧凑的元件数量***少的一个足迹。采用小型3mmx3mm10引线QFN封装。***MP2119/MP2119DQ2A,5.5V同步***开关稳压器价格***新！MP2119/MP2119DQ是内部补偿1.5MHz的固定频率PWM同步***稳压器。MP2119/MP2119DQ输入工作电压2.7V~5.5V，输出电压低至0.8V。MP2119/MP2119DQ特征•输出电流:2A•输入范围：2.7V~5.5V•可调输出:0.8V~0.9xVIN•1.5MHz的固定开关频率•全陶瓷电容设计•内部软启动•频率同步输入•电源良好输出•热关断•逐周期电流限制•短路保护•封装：QFN10（3mmx3mm）P2119/MP2119DQ应用•微处理器/ASIC的/的DSP/FPGA的内核及I/O电源•打印机和液晶电视•网络和电信设备•负载点稳压器***MP2119/MP2119DQ2A,5.5V同步***开关稳压器价格***新！MP2119/MP2119DQ******大额定值INtoGND......................................–0.3Vto+6VSWtoGND..........................–0.3VtoVIN+0.3VSWtoGND............-2.5VtoVIN+2.5Vfor<50nSFB,EN/SYNC,POKtoGND..........–0.3Vto+6.5VBStoSW....................................–0.3Vto+6.5VJunctionTemperature...............................150°CLeadTemperature....................................260°CStorageTemperature..............–65°Cto+150°C工作环境：SupplyVoltageVIN..........................2.7Vto5.5VOutputVoltageVOUT.................0.8Vto0.9xVINOperatingTemperature.............–40°Cto+85°CMP2119/MP2119DQ引脚说明：Pin#NameDescription6POKOpenDrainPowerOkayOutput.“HIGH”outputindicatesVOUTiswithin&plu***n;10%window.“LOW”outputindicatesVOUTisoutof&plu***n;10%window.POKispulleddowninshutdown.4.7INInputSupply.Adecouplingcapacitortogroundisrequiredclosetothesepinstoreduceswitchingspikes.3.8SWSwitchNodeConnectiontotheInductor.ThesepinsconnecttotheinternalhighandlowsidepowerMOSFETswitches.AllSWpinsmustbeconnectedtogetherexternally.2.9GNDGround.Connectthesepinswithlargercopperareastothenegativeterminalsoftheinputandoutputcapacitors5BSBootstrap.AcapacitorbetweenthispinandSWprovidesafloatingsupplyforthehigh-sidegatedriver.1FBFeedback.Thisistheinputtotheerroramplifier.AnexternalresistivedividerconnectsthispinbetweentheoutputandGND.ThevoltageontheFBpincomparestotheinternal0.8Vreferencetosettheregulationvoltage.10EN/SYNCEnableandFrequencySynchronizationInputPin.Forcingthispinbelow0.4Vshutsdownthepart.Forcingthispinabove1.6Vturnsonthepart.Applyinga1MHzto2MHzclocksignaltothispinsynchronizestheinternaloscillatorfrequencytotheexternalsource.)