NCP3235: 4.5 V to 21 V, DC/DC Converter with Integrated MOSFETs

Description: The NCP3235 is a 15 A DC/DC converter with interna...
  • The NCP3235 is a 15 A DC/DC converter with internal MOSFETs and offers flexibility in design. The device can deliver an adjustable output voltage as low as 0.6V to over 80% of the input voltage. Features include adjustable current limit, output voltage, and soft-start timing. Pin selectable features enable switching frequencies of 550 kHz or 1 MHz, selecting DCM/CCM operating modes, and the ability latch off or hiccup mode during over current. The part can be configure to operate in ultra-sonic mode to stay out of the audio band. The part is offered in a thermally enhanced 6mm by 6mm TQFN package.
  • Features
  • Accurate 0.6 V reference - Adjustable output to set desired voltage as low as 0.6 V
  • DCM/CCM selectable options - Operate in discontinuous mode for higher efficiency at light loads
  • 550kHz/1.1MHz switching frequency - Design flexibility to select higher efficiency or smaller output filter
  • Ultra-sonic mode - Keeps capacitors from making audio sounds
  • Thermally enhanced QFN package - Higher dissipation with 3 exposed pads
  • Wide operating range 4.5 V to 21 V - Allows for use across multiple applications
  • Adjustable soft start - Allows smooth ramp up during power up
  • Applications
  • Computing/Servers
  • Datacom/Networking
  • FGPA, ASIC, DSP power
  • 12 V Point of load
  • End Products
  • Desktops
  • Servers
  • Networking
  • Technical Documentation & Design Resources
    Evaluation/Development Tool Information
    Availability and Samples
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: 4.5 V to 21 V, DC/DC Converter with Integrated MOSFETs
  • Package Type: QFN-40
  • Package Case Outline: 485CM
  • MSL: 3
  • Container Type: REEL
  • Container Qty: 2500
  • Specifications
  • Topology: Step-Down 
  • Control Mode: Voltage Mode 
  • VCC Min (V): 4.5 
  • VCC Max (V): 21 
  • VO Typ (V): 0.6 
  • IO Typ (A): 15 
  • Efficiency (%): up to 97 
  • fSW Typ (kHz): 550, 1100 
  • Package Type: QFN-40 
  • ON Semiconductor Full Web Site