NCP3133A: 3 A Integrated Synchronous Buck Converter

NCP3133A is a fully integrated synchronous buck converter for 3.3 V and 5 V step−down applications. It can provide up to 3 A load current. NCP3133A supports high efficiency, fast transient response and provides power good indicator. The control scheme includes two operation modes: FCCM and automatic CCM/DCM. In automatic CCM/DCM mode, the controller can smoothly switch between CCM and DCM, where converter runs at reduced switching frequency with much higher efficiency.

Features
  • High Efficiency in both CCM and DCM
  • Support MLCC Output Capacitor
  • High Operation Frequency at 1.1 MHz
  • Small Footprint, 3 mm x 3 mm, 16−pin QFN Package
  • Up to 3 A Continuous Output Current
  • 2.9 V to 5.5 V Wide Conversion Voltage Range
  • Output Voltage Range from 0.6 V to 0.84 X Vin
  • Internal 400 µs Soft−Start
  • Automatic Power−Saving Mode
  • Voltage Mode Control
  • Support Pre-bias Start−up Functionality
  • Output Discharge Operation
  • Over−Temperature Protection
  • Built−in Over−Voltage, Under−Voltage and Over-Current Protection
  • Power Good Indicator
Benefits
  • Perfromance
  • Lower system cost
Applications
  • 5 V Step Down Rail
  • 3.3 V Step Down Rail
End Products
  • Servers
  • Desktop and notebook computers
  • Networking Systems
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
3 A Integrated Synchronous Buck ConverterNCP3133A/D (125kB)2
Package Drawings (1)
Document TitleDocument ID/SizeRevision
QFN16 3x3, 0.5P485DA (32.7kB)A
Evaluation Board Documents (4)
Document TitleDocument ID/SizeRevisionRevision Date
NCP3133AGEVB Bill of Materials ROHS CompliantNCP3133AGEVB_BOM_ROHS.pdf (94kB)0
NCP3133AGEVB Gerber Layout Files (Zip Format)NCP3133AGEVB_GERBER.zip (188kB)0
NCP3133AGEVB SchematicNCP3133AGEVB_SCHEMATIC.pdf (242kB)0
NCP3133AGEVB Test ProcedureNCP3133AGEVB_TEST_PROCEDURE.pdf (126kB)0
Evaluation/Development Tool Information
ProductStatusComplianceShort Description
NCP3133AGEVBActivePb-free3A Integrated Synchronous Buck Converter Evaluation Board
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
NCP3133AMNTXGActivePb-free Halide freeQFN-16485DA1Tape and Reel3000$0.47
Specifications
ProductTopologyControl ModeVCC Min (V)VCC Max (V)VO Typ (V)IO Typ (A)Efficiency (%)fSW Typ (kHz)
NCP3133AMNTXGStep-DownVoltage Mode2.95.51.23911000
3 A Integrated Synchronous Buck Converter (125kB) NCP3133A
NCP3133AGEVB BOM ROHS NCP3133AGEVB
NCP3133AGEVB GERBER NCP3133AGEVB
NCP3133AGEVB SCHEMATIC NCP3133AGEVB
NCP3133AGEVB TEST PROCEDURE NCP3133AGEVB
QFN16 3x3, 0.5P NCP3135