NCP3170: Buck Regulator, Switching, PWM, 3.0 A

The NCP3170 is a flexible synchronous PWM Switching Buck Regulator. The NCP3170 operates from 4.5 V to 18 V, producing up to 3 A and is capable of producing output voltages as low as 0.8 V. The NCP3170 also incorporates current mode control. To reduce the number of external components, a number of features are internally set including soft start, power good detection, and switching frequency. The NCP3170 is currently available in an SOIC-8 package.

Features
  • 4.5 V to 18 V Operating Input Voltage Range
  • 90mΩ High-Side, 24mΩ Low-Side MOSFET
  • Output Voltage Adjustable to 0.8 V
  • 3 A Continuous Output Current
  • Fixed 500 kHz and 1 MHz PWM Operation
  • 1.5% Initial Output Accuracy
  • Internal 4 ms SoftStart
  • ShortCircuit Protection
  • Thermal Shutdown
  • Light Load Efficiency
  • Dedicated PowerGood and ENABLE pin
Benefits
  • Wide input voltage range
  • Very high efficiency at low output voltages
  • Ability to regulate low output voltages
  • High current output
  • Scale for efficiency or physical size
  • Easy to design accurate system regulation
  • Reduced external components
  • Protection feature
  • Protection feature
  • Enhanced efficiency at lower output current
  • Built-in power sequencing capability
Applications
  • Point of Load (POL) DC/DC Regulator
  • Set-Top-Box (STB)
End Products
  • LCD-TV / DTV
  • Telecom / Datacom / Networking
  • PCIe Graphics Cards
Design & Development Tools (1)
Document TitleDocument ID/SizeRevisionRevision Date
NCP3170 Model for Power CalcsNCP3170 POWER CALCS (1518kB)7Feb, 2014
Package Drawings (1)
Document TitleDocument ID/SizeRevision
SOIC-8 Narrow Body751-07 (62.6kB)AK
Software (1)
Document TitleDocument ID/SizeRevisionRevision Date
ON Semiconductor Integrated Development Environment (IDE)WDK1.0GEVK_Software (351925kB)0
Evaluation Board Documents (13)
Document TitleDocument ID/SizeRevisionRevision Date
NCP3170AGEVB Bill of Materials ROHS CompliantNCP3170AGEVB_BOM_ROHS.PDF (34.0kB)6
NCP3170AGEVB Gerber Layout Files (Zip Format)NCP3170AGEVB_GERBER.ZIP (28.0kB)6
NCP3170AGEVB SchematicNCP3170AGEVB_SCHEMATIC.PDF (16.0kB)6
NCP3170AGEVB Test ProcedureNCP3170AGEVB_TEST_PROCEDURE.PDF (189.0kB)6
NCP3170BGEVB Bill of Materials ROHS CompliantNCP3170BGEVB_BOM_ROHS.PDF (48.0kB)1
NCP3170BGEVB Gerber Layout Files (Zip Format)NCP3170BGEVB_GERBER.ZIP (29.0kB)1
NCP3170BGEVB SchematicNCP3170BGEVB_SCHEMATIC.PDF (106.0kB)1
NCP3170BGEVB Test ProcedureNCP3170BGEVB_TEST_PROCEDURE.PDF (218.0kB)1
WDK1.0GEVK Docking Station Bill of Materials ROHS CompliantWDK1.0GEVK_Docking_Station_BOM_ROHS.rev0 (49kB)0
WDK1.0GEVK Docking Station SchematicWDK1.0GEVK_Docking_Station_Schematic.rev0 (231kB)0
WDK1.0GEVK Wearable Development Kit SchematicWDK1.0GEVK_Wearable_Development_Kit_Schematic.rev0 (614kB)0
WDK1.0GEVK Wearable Development Kit User's manualWDK1.0GEVK_Users_Manual.pdf (5241kB)2
WDK1.0GEVK Wearable Reference Design Bill of Materials ROHS CompliantWDK1.0GEVK_Wearable_Reference_Design_BOM_ROHS.rev0 (53kB)0
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Synchronous PWM Switching ConverterNCP3170/D (679kB)5Oct, 2014
Evaluation/Development Tool Information
ProductStatusComplianceShort Description
NCP3170AGEVBActivePb-freeFlexible Synchronous PWM Switching Buck Regulator Evaluation
NCP3170BGEVBActivePb-freeFlexible Synchronous PWM Switching Buck Regulator Evaluation
WDK1.0GEVKActiveWearable Reference Design and Development Kit
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
NCP3170ADR2GActivePb-free Halide freeSOIC-8751-073Tape and Reel2500$0.25
NCP3170BDR2GActivePb-free Halide freeSOIC-8751-073Tape and Reel2500$0.375
Specifications
ProductTopologyControl ModeVCC Min (V)VCC Max (V)VO Typ (V)IO Typ (A)Efficiency (%)fSW Typ (kHz)
NCP3170ADR2G Design itStep-DownCurrent Mode4.513.2 181.25 to 5.0392500
NCP3170BDR2G Design itStep-DownCurrent Mode4.513.2 181.25 to 5.03921000
Synchronous PWM Switching Converter (679kB) NCP3170
NCP3170 Model for Power Calcs NCP3170
WDK1 WDK1.0GEVK
NCP3170AGEVB BOM ROHS NCP3170AGEVB
NCP3170AGEVB GERBER NCP3170AGEVB
NCP3170AGEVB SCHEMATIC NCP3170AGEVB
NCP3170AGEVB TEST PROCEDURE NCP3170AGEVB
NCP3170BGEVB BOM ROHS NCP3170BGEVB
NCP3170BGEVB GERBER NCP3170BGEVB
NCP3170BGEVB SCHEMATIC NCP3170BGEVB
NCP3170BGEVB TEST PROCEDURE NCP3170BGEVB
WDK1 WDK1.0GEVK
WDK1 WDK1.0GEVK
WDK1 WDK1.0GEVK
WDK1 WDK1.0GEVK
WDK1 WDK1.0GEVK
SOIC-8 Narrow Body CM1216
NCP3170