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MP2459 - Step-Down Converter

General Description

The MP2459 is a monolithic, step-down, switchmode converter with a built-in power MOSFET.

It achieves a 0.5A peak-output current over a wide input supply range with excellent load and line regulation.

Current-mode operation provides a fast transient response and eases loop stabilization.

Key Features

  • 0.5A Peak Output Current.
  • 1Ω Internal Power MOSFET.
  • Stable with Low-ESR Ceramic Output Capacitors.
  • Up to 90% Efficiency.
  • 0.1μA Shutdown Mode.
  • Fixed 480kHz Frequency.
  • Thermal Shutdown.
  • Cycle-by-Cycle Over-Current Protection.
  • Wide 4.5V-to-55V Operating Input Range.
  • Output Adjustable from 0.81V to 0.95.
  • VIN.
  • Available in a TSOT23-6 Package.

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The Future of Analog IC Technology DESCRIPTION The MP2459 is a monolithic, step-down, switchmode converter with a built-in power MOSFET. It achieves a 0.5A peak-output current over a wide input supply range with excellent load and line regulation. Current-mode operation provides a fast transient response and eases loop stabilization. Fault condition protections include cycle-by-cycle current limiting and thermal shutdown. The MP2459 requires a minimal number of readily-available external components. The MP2459 is available in a TSOT23-6 package. MP2459 0.5A, 55V, 480kHz Step-Down Converter in a TSOT23-6 FEATURES  0.5A Peak Output Current  1Ω Internal Power MOSFET  Stable with Low-ESR Ceramic Output Capacitors  Up to 90% Efficiency  0.