Monolithic Power Systems

MP1474S Synchronous Step-Down Converter

MPS introduces its high-efficiency, 2 A, 16 V, 500 kHz, synchronous step-down converter

Image of MPS' MP1474S Synchronous Step-Down ConverterMonolithic Power Systems' MP1474S is a high-frequency, synchronous, rectified, step-down, switch-mode converter with built-in power MOSFETs. It offers a compact solution to achieve a 2 A continuous output current with excellent load and line regulation over a wide input supply range. The MP1474S has synchronous-mode operation for higher efficiency over the output current load range.

Current-mode operation provides fast, transient response and eases loop stabilization. Full protection features include over-current protection (OCP) and thermal shutdown (TSD). The MP1474S requires a minimal number of readily available, standard, external components and is available in a space-saving 8-pin TSOT23 package.

Features
  • Wide 4.5 V to 16 V operating input range
  • 150 mΩ/70 mΩ low RDS(ON) internal power MOSFETs
  • High-efficiency synchronous-mode operation
  • Fixed 500 kHz switching frequency
  • Synchronizes from a 300 kHz to 2 MHz external clock
  • Power-save mode at light load
  • Internal soft start
  • Power good indicator
  • Over-current protection and hiccup
  • Thermal shutdown
  • Output adjustable from 0.8 V
  • Available in a 8-pin TSOT-23 package
Applications
  • Notebook systems and I/O power
  • Digital set-top boxes
  • Flat-panel television and monitors
  • Distributed power systems
Published: 2015-08-11