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MP2457 - Step-Down Converter

General Description

The MP2457 is a high-frequency, step-down, switching regulator with integrated high-side and low-side power MOSFETs.

The MP2457 can provide up to 0.6A of output current efficiently with current-mode control for fast loop response.

Key Features

  • Meets 0.1% Output Voltage Ripple.
  • Low Dropout Mode.
  • 65μA Operating Quiescent Current.
  • Light-Load Mode.
  • >90% Efficiency.
  • Dedicated Internal Compensation.
  • Stable with Ceramic/Electrolytic Output Capacitors.
  • Wide 5V to 36V Operating Input Range.
  • 400mΩ/200mΩ Internal Power MOSFETs.
  • 2MHz Fixed Switching Frequency.
  • Internal Soft Start (SS).
  • Precision Current Limit without Current Sensing Resistor.
  • Output Adjustable from 0.8V to 0.95.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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The Future of Analog IC Technology DESCRIPTION The MP2457 is a high-frequency, step-down, switching regulator with integrated high-side and low-side power MOSFETs. The MP2457 can provide up to 0.6A of output current efficiently with current-mode control for fast loop response. The wide 5V to 36V input range accommodates a variety step-down applications, and the 0.6μA shutdown mode quiescent current allows the device to be used in battery-powered applications. The MP2457 uses high duty cycle and low dropout mode for low input voltage conditions. The MP2457 achieves high power conversion efficiency over a wide load range by scaling down the switching frequency under light-load conditions to reduce switching and gate driving losses.