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IC manufacturers Monolithic Power Systems

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Monolithic Power Systems EV28251GD-00A

20V, 4A 500kHz Synchronous Step-down Converter EV Board


TopologyBuck Converter
Input voltage6-20 V
Output 13.3 V / 4 A
IC revision1.02


The EV28251GD-00A is for demonstrating MPS’s MP28251, a high-frequency,synchronous, rectified, step-down, switch-mde converter with internal power MOSFETs. MP28251 offers a very compact solution to achieve 4A continuous output current over a wide input supply range with excellent load and line regulation. The MP28251 operates at high efficiency over a wide output current load range.

Current-mode operation provides fast transient response and eases loop stabilization. The full protection features include over-currentprotection and thermal shutdown.

The MP28251 requires a minimal number of readily-available standard external components and comes in a space saving 2×3mm 14-pinQFN package.


  • Wide 4.75V-to-20V Operating Input Range
  • 4A Output Current
  • Low RDS(ON) Internal Power MOSFETs
  • Programmable Switching Frequency
  • Programmable EN Delay
  • Frequency SYNC from 300kHz-to-2MHz External Clock
  • Low Power Mode Selectable by External Signal
  • External Soft-Start
  • OCP and Thermal Shutdown
  • Available in 14-pin QFN2×3 Package

Typical applications

  • Set Top Boxes
  • Cable Modems
  • DSL Modems