2A, 380kHz Step-Down Converter

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Product Description

The MP1580 is a monolithic step-down switch mode converter with a built in internal power MOSFET. It achieves 2A 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 cycle?y?ycle current limiting and thermal shutdown. In shutdown mode the regulator draws 23? of supply current. The MP1580 requires a minimum number of readily available standard external components. A synchronization pin allows the part to be driven to 600KHz.


Product Features

  • 2A Output Current
  • 0.18Ω Internal Power MOSFET Switch
  • Stable with Low ESR Output Ceramic Capacitors
  • Up to 95% Efficiency
  • 23μA Shutdown Mode
  • Fixed 380kHz Frequency
  • Thermal Shutdown
  • Cycle-by-Cycle Over Current Protection
  • Wide 4.75 to 25V Operating Input Range
  • Output Adjustable from 1.22V to 21V
  • Programmable Under Voltage Lockout
  • Frequency Synchronization Input
  • Available in an 8-Pin SOIC and PDIP8 Packages


  • fsw (max) (kHz)380
  • Vin (min) (V)4.75
  • Vin (max) (V)25
  • Iout (max) (A)2
  • Isw Limit (typ) (A)3
  • Max Duty Cycle (%)0.9
  • Vfb (typ) (V)1.222
  • Iq (typ) (mA)1
  • Regulated Outputs1
  • Vout (max) (V)21
  • Vout (min) (V)1.22
  • GradeCatalog
  • PackagePDIP8, SOIC-8
  • Special FeaturesExternal Frequency Sync