NCP1594A: Synchronous DC-DC Step-Down Converter, Integrated, 2.9 to 5.5 V, 4 A, Switches Up to 2 MHz

Description: The NCP1594A offers tremendous flexibility to allo...
  • The NCP1594A offers tremendous flexibility to allow for design optimization. The part enables the ability to optimize the size versus efficiency trade-off and the adjustability to meet various POL applications. Adjustable features include soft-start timing, switching frequency, output voltage, and mode of operation (fixed CCM mode or DCM/CCM operation). Additional features include a REFIN input that allows for the use of an external reference, which can be used in DDR termination applications. Nine output voltages can be selected with two inputs or the part can be adjusted externally with two external resistors. The NCP1594A is protected against overcurrent, undervoltage, and thermal fault conditions. The part is fully specified from -40C to 85C.
  • Features
  • Operation from 2.9 V to 5.5V - Allows operation from 3.3V or 5V bus rails
  • Adjustable frequency from 500 kHz to 2 MHz - Optimize trade-off in total size versus efficiency
  • 9 Fixed output voltages or externally adjustable down to 0.6V - Saves external resistors and/or provides design flexibility
  • Undervoltage, Overcurrent, and Overtemperature protection - Protect IC against faults
  • Adjustable soft-start - Set timing for controlled output ramp up
  • Safe start up into prebias output - Prevents reverse current flow from output capacitor
  • External reference input - Allows for changes to the output and can be used in DDR termination applications
  • Cycle by cycle overcurrent - Protect against overcurrent conditions
  • Adjustable switching frequency from 500kHz to 2MHz - Optimize design in terms of size and efficiency
  • REFIN input - Allows for use in DDR termination applications
  • Forced CCM and DCM/CCM - Allows fixed frequency operation for noise sensitive applications or skip mode for improved efficiency at light loads
  • Up to 4 A Output Current
  • Applications
  • 3.3 V and 5 V bus rail point of loads
  • DDR termination
  • End Products
  • Telecom and networking
  • Base stations
  • solid state drives
  • Storage devices (SSD and Tape drives)
  • Server
  • DDR memory termination
  • Technical Documentation & Design Resources
    Availability and Samples
    NCP1594AMNTXG
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Synchronous DC-DC Step-Down Converter, Integrated, 2.9 to 5.5 V, 4 A, Switches Up to 2 MHz
  • Package Type: 
  • Package Case Outline: 
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 4000
  • Inventory

  • Market Leadtime (weeks):2 to 4
  • Arrow:0
  • Digikey:>1K
  • Newark:>1K
  • Specifications
  • Topology: Step-Down 
  • Control Mode: Voltage Mode 
  • VCC Min (V): 2.9 
  • VCC Max (V):
  • VO Typ (V): 0.6 to 5 
  • IO Typ (A):
  • Efficiency (%): 95 
  • fSW Typ (kHz): 500 to 2000 
  • ON Semiconductor Full Web Site