NCP1589D: Snychronous Buck Controller

Description: The NCP1589D is a low cost PWM controller designed...
  • The NCP1589D is a low cost PWM controller designed to operate from a 5 V or 12 V supply. This device is capable of producing an output voltage as low as 0.8 V and converting voltage from as low as 2.5 V. It is easy to operate and provides an optimal level of integration to reduce size and cost of the power supply. It operates in Ramp Pulse Modulation mode for superior load step and release response. In addition to fast transient response, it also includes a 1.5 A gate driver design and light load efficiency features such as adaptive nonoverlap circuitry and diode emulation. It normally operates at a range of 200~500 kHz in continuous current conduction mode, which reduces with current at light load for further power saving. Protection features include programmable overcurrent protection, output overvoltage and undervoltage protection and input undervoltage lockout.
  • Features
  • VCC Range from 4.5 V to 13.2 V
    Adjustable Operating frequency
    Boost Pin Operates to 35 V
    Ramp Pulse Modulation Control
    Precision 0.8 V Internal Reference
    Adjustable Output Voltage
    Internal 1.5 A Gate Drivers
    80% Max Duty Cycle
    Programmable Current Limit
    Adaptive Diode Mode Emulation in Light Load
    This is a PbFree Device
  • Applications
  • Graphics Cards
    Desktop Computers
    Servers / Networking
    DSP & FPGA Power Supply
    DCDC Regulator Modules
  • Technical Documentation & Design Resources
    Product Change Notification
    Availability and Samples
  • Status: Active
  • Compliance: Pb-free 
  • Description: Snychronous Buck Controller
  • Package Type: DFN-10
  • Package Case Outline: 485C
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • Inventory

  • Market Leadtime (weeks):2 to 4
  • Arrow:0
  • Digikey:>1K
  • ON Semiconductor:36,000
  • Applications
  • Topology: Step-Down 
  • Phases:  
  • Control Mode:  
  • VCC Min (V): 4.5 
  • VCC Max (V): 13.2 
  • fSW Typ (kHz):  
  • Package Type: DFN-10 
  • ON Semiconductor Full Web Site