NCP3233: Step Down Converter Operates from 3V to 21V and delivers up to 20A

Description: The NCP3233 is a 20A step down converter (with int...
  • The NCP3233 is a 20A step down converter (with internal MOSFETs) capable of operating from 3V to 21V without the need for an external bias. This fixed frequency converter offers high efficiency and the output can be adjusted to offer a voltage as low as 0.6V. An adjustable current limit allows the device to be used for multiple current levels. The part is offered is a thermally enhanced 6mm by 6mm QFN package ent, high efficiency voltage-mode synchronous buck converter which operates from 3 V to 21 V input and generates output voltages down to 0.6 V at up to 25 A DC load or 30 A instantaneous load.
  • Features
  • Wide input voltage range from 3V to 21V - Allows same device to be used for 3.3V, 5V, and 12V bus rails
  • 300kHz, 500kHz, and 1MHz switching frequency - User selectable option to allow optimized trade-off between efficiency and solution size
  • Lossless low-side FET current sensing - Improve efficiency
  • 0.6V internal reference volttage - Low voltage output to accommodate low voltage cores
  • External programmable soft-start - Reduces in-rush current and prevents unwarranted overcurrent during start up
  • Pre-bias Start-up - Prevents reverse current flow
  • Hiccup Mode Operation for all Faults - Allows re-start if fault conditions are eliminated
  • Adjustable Output Voltage - Flexibility
  • Adjustable current limt - Optimize for overcurrent conditions. Allow smaller inductors with lower saturation currents to be used for lower current applications
  • Output Over-voltage Protection and Under-voltage Protection
  • Applications
  • High current POL applications
  • ASIC, FPGA, DSP and CPU Core and I/O Supplies
  • End Products
  • Cellular Base Stations
  • Telecom and Network Equipment
  • Server and Storage System
  • Technical Documentation & Design Resources
    Evaluation/Development Tool Information
    Availability and Samples
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Step Down Converter Operates from 3V to 21V and delivers up to 20A
  • Package Type: QFN-40
  • Package Case Outline: 485AZ
  • MSL: 3
  • Container Type: REEL
  • Container Qty: 2500
  • Specifications
  • Topology: Step-Down 
  • Control Mode: Voltage Mode 
  • VCC Min (V):
  • VCC Max (V): 16 
  • VO Typ (V): 0.6 
  • IO Typ (A): 20 
  • Efficiency (%): 95 
  • fSW Typ (kHz): 500 
  • Package Type: QFN-40 
  • ON Semiconductor Full Web Site