3A, 21V, 600kHz Step-Down Converter

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Product Description

The MP2377 is a monolithic step-down switch mode converter with a built in high-side power MOSFET. It achieves 3A continuous output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes current limiting and thermal shutdown. The MP2377 requires a minimum number of readily available standard external components and is available in 8-pin SOIC packages with exposed pad.


Product Features

  • Wide 4.5V to 21V Operating Input Range
  • 3A Output Current
  • 100mO Internal Power MOSFET Switch
  • Power Good Indicator
  • Fixed 600kHz Frequency
  • Synchronizable to >1MHz External Clock
  • Over Current Latch Off Protection
  • Thermal Shutdown
  • Output Adjustable from 0.8V to 15V
  • Stable with Low ESR Output Ceramic Capacitors
  • Available in Thermally Enhanced 8-Pin SOIC Packages
  • Supports Soft-Start into Pre-Biased Output


  • fsw (max) (kHz)600
  • Vin (min) (V)4.5
  • Vin (max) (V)21
  • Iout (max) (A)3
  • Isw Limit (typ) (A)4
  • Max Duty Cycle (%)0.9
  • Vfb (V)0.808
  • Iq (typ) (mA)0.9
  • Regulated Outputs1
  • Vout (min) (V)0.81
  • GradeCatalog
  • Common FeaturesPower Good
  • Special FeaturesExternal Frequency Sync

Reference Materials