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 cycle­by­cycle current limiting and thermal shutdown. In shutdown mode the regulator draws 23μA 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 (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

Reference Materials

Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.