NCV8843: Buck Regulator, 1.5 A, 340 kHz, with Synchronization Capability

The NCV8843 is a 1.5 A buck regulator IC operating at a fixed frequency of 340 kHz. The device employs the V2™ control architecture to provide unmatched transient response, the best overall regulation and the simplest loop compensation. The NCV8842 accommodates input voltages from 4.0 V to 40 V and contains synchronization circuitry. The on-chip NPN transistor is capable of providing a minimum of 1.5 A of output current and is biased by an external boost capacitor to ensure saturation, thus minimizing on-chip power dissipation. Protection circuitry includes thermal shutdown, cycle-by-cycle current limiting and frequency foldback short-circuit protection.

Features
  • V2™ Control Architecture
  • 2.0% Error Amp Reference Voltage Tolerance
  • Cycle-by-Cycle Current Limiting
  • Switch Frequency Decrease of 4:1 in Short Circuit
  • Bootstrapped Operation (BOOST)
  • Synchronization to External Clock (SYNC)
  • 1.0 A Shutdown Quiescent Current
  • Thermal Shutdown
  • Soft-Start
  • Pb-Free Packages are Available
Benefits
  • Ultra-fast Transient Response, Improved Regulation and Simplified Design
  • Tight Output Regulation
  • Limits Switch and Inductor Current
  • Reduces Short Circuit Power Dissipation
  • Increased Efficiency and Minimized On-Chip Power Dissipation
  • Synchronization to External Clock (SYNC)
  • Minimize Current Consumption when SHDNB is Asserted
  • Protect IC from Over-Temperature
  • Decrease Inrush Current and Minimize Output Over-shoot During Start-Up
Applications
  • Automotive
  • Industrial
End Products
  • Dc-dc power supplies
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Buck Regulator, 1.5 A, 340 kHz, with Synchronization CapabilityNCV8843/D (351kB)11
Evaluation Board Documents (4)
Document TitleDocument ID/SizeRevisionRevision Date
NCV8843MNR2GEVB Bill of Materials ROHS CompliantNCV8843MNR2GEVB_BOM_ROHS.PDF (70.0kB)0
NCV8843MNR2GEVB Gerber Layout Files (Zip Format)NCV8843MNR2GEVB_GERBER.ZIP (124.0kB)0
NCV8843MNR2GEVB SchematicNCV8843MNR2GEVB_SCHEMATIC.PDF (130.0kB)0
NCV8843MNR2GEVB Test ProcedureNCV8843MNR2GEVB_TEST_PROCEDURE.PDF (220.0kB)0
Package Drawings (3)
Document TitleDocument ID/SizeRevision
5X6MM, .5MM PITCH505 (33.7kB)D
SOIC 16 LEAD WIDE BODY, EXPOSED PAD751R-02 (40.0kB)B
SOIC-8 Narrow Body751-07 (62.6kB)AK
Evaluation/Development Tool Information
ProductStatusComplianceShort Description
NCV8843MNR2GEVBActivePb-freeBuck Regulator Demonstration Evaluation Board
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
NCV8843DGLast ShipmentsAEC Qualified PPAP Capable Pb-free Halide freeSOIC-8751-071Tube98
NCV8843DR2GLast ShipmentsAEC Qualified PPAP Capable Pb-free Halide freeSOIC-8751-071Tape and Reel2500
NCV8843MNR2GActiveAEC Qualified PPAP Capable Pb-free Halide freeDFN-185051Tape and Reel2500$1.3333
NCV8843PWGLast ShipmentsAEC Qualified PPAP Capable Pb-free Halide freeSOIC-16W751R-021Tube47
NCV8843PWR2GLast ShipmentsAEC Qualified PPAP Capable Pb-free Halide freeSOIC-16W751R-021Tape and Reel1000
Specifications
ProductTopologyControl ModeVCC Min (V)VCC Max (V)VO Typ (V)IO Typ (A)Efficiency (%)fSW Typ (kHz)
NCV8843MNR2GStep-DownV24401.5Up to 700
Buck Regulator, 1.5 A, 340 kHz, with Synchronization Capability (351kB) NCV8843
NCV8843MNR2GEVB BOM ROHS NCV8843MNR2GEVB
NCV8843MNR2GEVB GERBER NCV8843MNR2GEVB
NCV8843MNR2GEVB SCHEMATIC NCV8843MNR2GEVB
NCV8843MNR2GEVB TEST PROCEDURE NCV8843MNR2GEVB
SOIC-8 Narrow Body CM1216
5X6MM, .5MM PITCH NCP3163
SOIC 16 LEAD WIDE BODY, EXPOSED PAD NCV8843
NCV8843