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Monolithic Power Systems (MPS) MP4559 Step-Down Converters

Monolithic Power Systems (MPS) MP4559 Step-Down Converters are high-frequency switching regulators with an integrated high-side, high-voltage power MOSFET. The MP4559 series delivers 1.5A output with current mode control for a fast loop response and easy compensation. The wide input range of 3.8V to 55V accommodates many step-down applications, including automotive input environments. 12µA quiescent current in shutdown mode makes the MP4559 series suitable for battery-powered applications. Higher power conversion efficiency is achieved over a wide load range by scaling down the switching frequency under light load conditions.

Features

  • Wide 3.8V to 55V operating input range
  • 250mΩ internal power MOSFET
  • Up to 2MHz programmable switching frequency
  • 140µA quiescent current
  • Ceramic capacitor stable
  • Internal soft-start
  • Up to 95% efficiency
  • Adjustable output from 0.8V to 52V
  • Available in QFN (3mm x 3mm) and SOIC8E with exposed pad packages

Applications

  • High voltage power conversion
  • Automotive systems
  • Industrial power systems
  • Distributed power systems
  • Battery-powered systems

Typical Application

Monolithic Power Systems (MPS) MP4559 Step-Down Converters
Published: 2015-05-14 | Updated: 2022-03-11