NCV890100: Automotive Switching Regulator, Buck, 1.2 A, 2 MHz

The NCV890100 is a fixed-frequency, monolithic, Buck switching regulator intended for Automotive, battery-connected applications that must operate with up to a 36V input supply. The regulator is suitable for systems with low noise and small form factor requirements often encountered in automotive driver information systems. The NCV890100 is capable of converting the typical 4.5 V to 18 V automotive input voltage range to outputs as low as 3.3 V at a constant switching frequency above the sensitive AM band, eliminating the need for costly filters and EMI countermeasures.The NCV890100 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 an all-ceramic output filter capacitor - forming a space-efficient switching regulator solution.

Features
  • 2-MHz Free-Running Switching Frequency
  • Internal N-Channel Power Switch
  • Low VIN Operation Down to 4.5 V
  • High VIN Operation Up to 36 V
  • Withstands Load Dumps to 40 V
  • Logic level Enable Input Can be Directly Tied to Battery
  • 1.4 A (min) Cycle-by-Cycle Peak Current Limit
  • Short-Circuit Protection enhanced by Frequency Foldback
  • ±1.75% Output Voltage Tolerance
  • Output Voltage Adjustable Down to 0.8 V
  • 1.4 ms Internal Soft-Start
  • Thermal Shutdown (TSD)
  • Low Shutdown Current
  • NCV Prefix for Automotive and Other Applications Requiring Site and Change Controls
  • Wettable Flanks DFN
  • This is a Pb-Free Device
Benefits
  • Enables the use of small size, low cost inductor and EMC filter
Applications
  • Audio
  • Infotainment
  • Safety - Vision Systems
  • Dashboards
End Products
  • Automotive
Design & Development Tools (1)
Document TitleDocument ID/SizeRevisionRevision Date
NCV890100/01/30/31 Design Worksheet - Continuous Conduction ModeNCV8901_00_01_30_31 design sheet (203kB)2Nov, 2014
Package Drawings (2)
Document TitleDocument ID/SizeRevision
DFN8, 3x3, 0.65P506BY (56.5kB)A
SOIC-8 EP751AC (33.6kB)B
Simulation Models (4)
Document TitleDocument ID/SizeRevisionRevision Date
Average model for ac simulation on PSPICENCV8901XX_AC_PSPICE (220kB)1
Average model for fast transient simulations on PSPICE (no switching)NCV8901XX_TRANAVG_PSPICE (246kB)1
NCV890100 switching model for PSPICENCV890100_SPICE (11.0kB)0
average model for AC simulation on Spice simulators (other than Pspice)NCV8901xx_SPICE_AC_AVG (194kB)3.1Sep, 2014
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Automotive Switching Regulator, Buck, 1.2 A, 2 MHzNCV890100/D (145kB)3Sep, 2014
Evaluation Board Documents (4)
Document TitleDocument ID/SizeRevisionRevision Date
NV890100PDR2GEVB Bill of Materials ROHS CompliantNV890100PDR2GEVB_BOM_ROHS.PDF (39.0kB)0
NV890100PDR2GEVB Gerber Layout Files (Zip Format)NV890100PDR2GEVB_GERBER.ZIP (50.0kB)0
NV890100PDR2GEVB SchematicNV890100PDR2GEVB_SCHEMATIC.PDF (140.0kB)0
NV890100PDR2GEVB Test ProcedureNV890100PDR2GEVB_TEST_PROCEDURE.PDF (117.0kB)0
Evaluation/Development Tool Information
ProductStatusComplianceShort Description
NV890100PDR2GEVBActivePb-freeFixed-Frequency Monolithic Buck Switching Regulator Evaluation Board
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
NCV890100MWTXGActiveAEC Qualified PPAP Capable Pb-freeDFN-8506BY1Tape and Reel3000$1.125
NCV890100PDR2GActiveAEC Qualified PPAP Capable Pb-freeSOIC-8 EP751AC2Tape and Reel2500$1.125
Specifications
ProductTopologyControl ModeVCC Min (V)VCC Max (V)VO Typ (V)IO Typ (A)Efficiency (%)fSW Typ (kHz)
NCV890100MWTXGStep-Down4.540Adjustable1.22250
NCV890100PDR2GStep-Down4.540Adjustable1.22250
Automotive Switching Regulator, Buck, 1.2 A, 2 MHz (145kB) NCV890100
NCV890100/01/30/31 Design Worksheet - Continuous Conduction Mode NCV890131
Average model for ac simulation on PSPICE NCV890131
Average model for fast transient simulations on PSPICE (no switching) NCV890131
NCV890100 switching model for PSPICE NCV890231
average model for AC simulation on Spice simulators (other than Pspice) NCV890131
NV890100PDR2GEVB BOM ROHS NV890100PDR2GEVB
NV890100PDR2GEVB GERBER NV890100PDR2GEVB
NV890100PDR2GEVB SCHEMATIC NV890100PDR2GEVB
NV890100PDR2GEVB TEST PROCEDURE NV890100PDR2GEVB
DFN8, 3x3, 0.65P NCV890430
SOIC-8 EP NCV8668
NCV890100