NCV890430: Automotive 0.6 A 2 MHz 100% Duty Cycle Step-Down Synchronous Regulator

The NCV890430 is a fixed-frequency Synchronous Buck regulator intended for Automotive, battery-connected applications that operate with up to a 45 V input supply. It is suitable for automotive systems requiring low noise and low shutdown currents that also need to operate at low input voltage close to the output voltage. A reset pin (with adjustable delay) simplifies interfacing with a microcontroller. This part also features an enable input that can either be connected to a low voltage (such as a micro-controller output) or high voltage (such as the battery input), and a synchronization input. The NCV890430 also provides several protection features expected in automotive power supply systems such as current limit, short circuit protection, and thermal shutdown. In addition, the high switching frequency produces low output voltage ripple even when using small inductor values and all-ceramic input output filter capacitors − forming a space-efficient switching regulator solution.

Features
  • Internal 550 mΩ P Channel and 300 mΩ N-Channel Power Switches
  • Capable of 100% Duty Cycle Operation
  • VIN operating range of 3.5 V to 37 V
  • Withstands Load Dump to 45 V
  • 2 MHz Free-Running Switching Frequency
  • Shutdown Current Less than 10 µA
  • High Voltage Enable Pin
  • Synchonization Input Pin
  • Maximum DC Output Current of at least 0.6A
  • Fixed Output Voltage (5.0 V, 3.3 V and 2.5 V Versions)
  • ± 2% Output Voltage Accuracy
  • DFN Package with Wettable Flanks (Pin Edge Plating Per JEDEC MO220)
  • NCV Prefix for Automotive Requiring Site and Control Changes
  • Pb-Free
Applications
  • Automotive Infotainment and Instrumentation
  • Automotive Body Applications
  • Linear Regulator Replacement
  • Rear View Camera
End Products
  • Automotive
Design & Development Tools (4)
Document TitleDocument ID/SizeRevisionRevision Date
NCV890430 2.5V Bill of MaterialsNCV890430MW25GEVB_BOM (14kB)0Apr, 2016
NCV890430 3.3 V Bill of MaterialsNCV890430MW33GEVB_BOM (14kB)0Apr, 2016
NCV890430 5.0 V Bill of MaterialsNCV890430MW50GEVB_BOM (14kB)0Apr, 2016
NCv890430 Design ToolsNCV890430 Design Tools (30kB)2Dec, 2016
Package Drawings (1)
Document TitleDocument ID/SizeRevision
DFN8, 3x3, 0.65P506BY (56.5kB)A
Simulation Models (1)
Document TitleDocument ID/SizeRevisionRevision Date
NCV890430 PSPICE ModelNCV890430 PSPICE Model (185kB)2Jan, 2017
Evaluation Board Documents (10)
Document TitleDocument ID/SizeRevisionRevision Date
NCV890430 Evaluation Board User's ManualEVBUM2494/D (398kB)0Nov, 2016
NCV890430MW25GEVB Bill of Materials (ROHS Compliant)NCV890430MW25GEVB_BOM_ROHS (25kB)0
NCV890430MW25GEVB Gerber Layout Files (Zip Format)NCV890430MW25GEVB_GERBER (56kB)0
NCV890430MW25GEVB SchematicNCV890430MW25GEVB Schematic (308kB)1
NCV890430MW33GEVB Bill of Materials (ROHS Compliant)NCV890430MW33GEVB_BOM_ROHS (25kB)0
NCV890430MW33GEVB Gerber Layout Files (Zip Format)NCV890430MW33GEVB_GERBER (56kB)0
NCV890430MW33GEVB SchematicNCV890430MW33GEVB_Schematic (307kB)1
NCV890430MW50GEVB Bill of Materials (ROHS Compliant)NCV890430MW50GEVB_BOM_ROHS (25kB)0
NCV890430MW50GEVB Gerber Layout Files (Zip Format)NCV890430MW50GEVB_GERBER (56kB)0
NCV890430MW50GEVB SchematicNCV890430MW50GEVB_Schematic (307kB)1
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Step-Down Synchronous Regulator for Automotive, 0.6A, 2MHz 100% Duty CycleNCV890430/D (398kB)0Mar, 2016
Evaluation/Development Tool Information
ProductStatusComplianceShort Description
NCV890430MW25GEVBActivePb-free2 MHz, 100% Duty Cycle, Step-Down Synchronous Regulator Automotive Evaluation Board
NCV890430MW33GEVBActivePb-free2 MHz, 100% Duty Cycle, Step-Down Synchronous Regulator Automotive Evaluation Board
NCV890430MW50GEVBActivePb-free2 MHz, 100% Duty Cycle, Step-Down Synchronous Regulator Automotive Evaluation Board
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
NCV890430MW25TXGActiveAEC Qualified PPAP Capable Pb-free Halide freeDFN-8506BY1Tape and Reel3000$1.6
NCV890430MW33TXGActiveAEC Qualified PPAP Capable Pb-free Halide freeDFN-8506BY1Tape and Reel3000$1.6
NCV890430MW50TXGActiveAEC Qualified PPAP Capable Pb-free Halide freeDFN-8506BY1Tape and Reel3000$1.6
Specifications
ProductTopologyControl ModeVCC Min (V)VCC Max (V)VO Typ (V)IO Typ (A)Efficiency (%)fSW Typ (kHz)
NCV890430MW25TXGStep-DownCurrent Mode3.5452.50.6832000
NCV890430MW33TXGStep-DownCurrent Mode3.5453.30.6772000
NCV890430MW50TXGStep-DownCurrent Mode3.54550.6742000
Step-Down Synchronous Regulator for Automotive, 0.6A, 2MHz 100% Duty Cycle (398kB) NCV890430
NCV890430 2.5V Bill of Materials NCV890430
NCV890430 3.3 V Bill of Materials NCV890430
NCV890430 5.0 V Bill of Materials NCV890430
NCv890430 Design Tools NCV890430
NCV890430 PSPICE Model NCV890430
NCV890430MW50GEVB
NCV890430MW25GEVB
NCV890430MW25GEVB
NCV890430MW25GEVB Schematic NCV890430
NCV890430MW33GEVB
NCV890430MW33GEVB
NCV890430MW33GEVB
NCV890430MW50GEVB
NCV890430MW50GEVB
NCV890430MW50GEVB
DFN8, 3x3, 0.65P NCV890430