NCP3135: 2.9V to 5.5V, 5A Integrated Synchronous DC-DC Step Down Converter

NCP3135 is a fully integrated synchronous buck converter capable of delivering up to 5A. The device operates from 2.9V to 5.5V, making them ideal for 3.3V and 5V bus applications. The NCP3135 offers high efficiency, fast load transient response, and can operate in CCM/DCM (automatic continuous/discontinuous modes) or FCCM (forced continuous conduction mode). High switching frequency reduces the output filter size. The device offers enable and power good indicator that can be used for sequencing. The NCP3135 is offered in a small 3mm x 3mm QFN package.

Features
  • Automatic DCM/CCM and FCCM operating modes
  • 1.1MHz Switching Frequency
  • 3mm by 3mm QFN package
  • Output range from 0.6V to 0.84Vin
  • Over/Undervoltage, Overcurrent, and Overtemperature protection
  • Internal 1ms soft start
  • Safe start up into prebias output
  • Up to 5A continuous current
Benefits
  • Improve efficiency at light loads or use fixed frequency operating mode
  • High switching frequency to minimize passives (inductor, capacitors)
  • Small size reduce board space. QFN thermally enhance for power dissipation
  • Flexibility allows same device for multiple applications
  • Protect IC against faults
  • Reduce inrush current during start up
  • Prevents reverse current flow from output capacitor
Applications
  • 5V and 3.3V POL applications
End Products
  • servers/desktops/notebooks
  • solid state drives
  • base station/networking
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
5 A Integrated Synchronous Buck ConverterNCP3135/D (141kB)1Jul, 2015
Evaluation Board Documents (4)
Document TitleDocument ID/SizeRevisionRevision Date
NCP3135GEVB Bill Of Materials (ROHS Compliant)NCP3135GEVB_BOM_ROHS.pdf (90kB)0
NCP3135GEVB Gerber Layout Files (Zip Format)NCP3135GEVB_GERBER.zip (184kB)0
NCP3135GEVB SchematicNCP3135GEVB_SCHEMATIC.pdf (131kB)0
NCP3135GEVB Test ProcedureNCP3135GEVB_TEST_PROCEDURE.pdf (112kB)0
Package Drawings (1)
Document TitleDocument ID/SizeRevision
QFN16 3x3, 0.5P485DA (32.7kB)A
Evaluation/Development Tool Information
ProductStatusComplianceShort Description
NCP3135GEVBActivePb-free2.9V to 5.5V, 5A Integrated Synchronous DC-DC Step Down Converter Evaluation Board
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
NCP3135MNTXGActivePb-free Halide freeQFN-16485DA1Tape and Reel3000$0.3
Specifications
ProductTopologyControl ModeVCC Min (V)VCC Max (V)VO Typ (V)IO Typ (A)Efficiency (%)fSW Typ (kHz)
NCP3135MNTXGStep-DownVoltage Mode2.95.50.6 to 0.8Vin5951100
5 A Integrated Synchronous Buck Converter (141kB) NCP3135
NCP3135GEVB BOM ROHS NCP3135GEVB
NCP3135GEVB GERBER NCP3135GEVB
NCP3135GEVB SCHEMATIC NCP3135GEVB
NCP3135GEVB TEST PROCEDURE NCP3135GEVB
QFN16 3x3, 0.5P NCP3135