NCP5217: Synchronous Buck Controller, Single

The NCP5217A is a synchronous step-down controller for high performance battery-power systems. The NCP5217A includes a high efficiency PWM controller. A pin is provided to enable or disable force PWM mode of operation. An internal power good voltage monitor tracks the SMPS output. NCP5217A also features soft-start sequence, UVLO for VCC and switcher, overvoltage protection, overcurrent protection, undervoltage protection and thermal shutdown. The IC is packaged in QFN-14.

Features
  • 0.8% accuracy 0.8 V reference
  • 4.5 V to 27 V battery/adapter voltage range
  • Selectable power saving mode/force PWM mode
  • Lossless inductor current sensing
  • Programmable adaptive voltage positioning (AVP)
  • Input supply feedforward control
  • Internal Soft-Start
  • Integrated output discharge (Soft Stop)
  • Built-in adaptive gate driver
  • PGOOD indication
  • Overvoltage, undervoltage and overcurrent protection
  • Thermal shutdown
Applications
  • Notebook computers
Application Notes (1)
Document TitleDocument ID/SizeRevisionRevision Date
Use of NCP5217A Pspice ModelAND9002/D (445.0kB)0
Package Drawings (1)
Document TitleDocument ID/SizeRevision
QFN14, 3.5x3.5, 0.5P485AL (47.2kB)O
Simulation Models (1)
Document TitleDocument ID/SizeRevisionRevision Date
Pspice Model of NCP5217ANCP5217A_PSPICE (8.0kB)0
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Synchronous Buck Controller, SingleNCP5217A/D (279.0kB)2
Evaluation Board Documents (4)
Document TitleDocument ID/SizeRevisionRevision Date
NCP5217AGEVB Bill of Materials ROHS CompliantNCP5217AGEVB_BOM_ROHS.PDF (185.0kB)0
NCP5217AGEVB Gerber Layout Files (Zip Format)NCP5217AGEVB_GERBER.ZIP (215.0kB)0
NCP5217AGEVB SchematicNCP5217AGEVB_SCHEMATIC.PDF (137.0kB)0
NCP5217AGEVB Test ProcedureNCP5217AGEVB_TEST_PROCEDURE.PDF (212.0kB)0
Evaluation/Development Tool Information
ProductStatusComplianceShort Description
NCP5217AGEVBActivePb-freeSynchronous Step-Down Controller Evaluation Board
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
NCP5217AMNTXGActivePb-free Halide freeQFN-14485AL1Tape and Reel3000$0.3067
Specifications
ProductTopologyPhasesControl ModeVCC Min (V)VCC Max (V)fSW Typ (kHz)tres Typ (ns)
NCP5217AMNTXGStep-Down1Current/Voltage Mode4.527300
Synchronous Buck Controller, Single (279.0kB) NCP5217
Use of NCP5217A Pspice Model NCP5217
Pspice Model of NCP5217A NCP5217
NCP5217AGEVB BOM ROHS NCP5217AGEVB
NCP5217AGEVB GERBER NCP5217AGEVB
NCP5217AGEVB SCHEMATIC NCP5217AGEVB
NCP5217AGEVB TEST PROCEDURE NCP5217AGEVB
QFN14, 3.5x3.5, 0.5P NCP5217