Transcription of LM5116 Wide Range Synchronous Buck Controller datasheet ...
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LM5116 Wide Range Synchronous Buck Controller datasheet ...
FBVINVCCRT/ SYNCHBENLLM5116 COMPAGNDCSGRAMPSSCSPGNDLOVOUTHOSWUVLOVCC XDEMBCSYNCCVCCVINCHBCOUTVOUTRFB2 RSCRAMPCSSCHFRTCCOMPRCOMPRUV1 RUV2 VINCINRFB1 ProductFolderOrderNowTechnicalDocumentsT ools &SoftwareSupport &CommunityReferenceDesignAn IMPORTANTNOTICEat the end of this datasheetaddressesavailability,warranty, changes,use in safety-criticalapplications,intellectual propertymattersand FEBRUARY2007 REVISEDJULY2015LM5116 Wide RangeSynchronousBuck Controller11 Features1 EmulatedPeakCurrentMode WideOperatingRangeUp to 100 V Low IQShutdown(< 10 A) DrivesStandardor LogicLevelMOSFETs Free-runor SynchronousOperationto 1 MHz OptionalDiodeEmulationMode to 80 V ProgrammableCurrentLimit ProgrammableSoft-Start ProgrammableLine UndervoltageLockout AutomaticSwitchto ExternalBiasSupply HTSSOP-20 ExposedPad ThermalShutdown Createa CustomDesignUsingthe LM5116withthe WEBENCHP owerDesigner2 Applications AutomotiveInfotainment IndustrialDC-DCMotorDrivers AutomotiveUSBA dapters TelecomServers3 DescriptionTheLM5116is a synchronousbuckcontrollerintendedfor step-downregulatorapplicationsfromahigh- voltageor baseduponcurrentmodecontrolutilizingan feed-forward,cycle-by-cyclecurrentlimiti ng, use of an emulatedcontrolrampreducesnoisesensitivi tyof thepulse-widthmodulationcircuit,allowing reliablecontrolof verysmalldutycyclesnec
Locally decouple to PGND using a low ESR/ESL capacitor located as close to the controller as possible. VCCX 17 P Optional input for an externally supplied VCC. If VCCX > 4.5 V, VCCX is internally connected to VCC and the internal VCC regulator is disabled. If VCCX is unused, it should be connected to ground. VOUT 10 I Output monitor.
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