1.5A, 36V, 700KHz Step-Down Converter with Programmable Output Current Limit

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Product Description

The MP2490 is a monolithic step-down switch mode converter with a programmable output current limit. It achieves 1.5A continuous output current over a wide input supply range with excellent load and line regulation. The maximum output current can be programmed by sensing current through the inductor DC resistance (DCR) or an accurate sense resistor. Fault condition protection includes cycle­by­cycle current limiting and thermal shutdown. The MP2490 requires a minimum number of readily available standard external components. The MP2490 is available in QFN10 (3mm x 3mm) and 8-pin SOIC packages.

Product Features

  • Wide 4.5V to 36V Operating Input Range
  • Programmable up to 1.5A Output Current
  • Output Adjustable from 0.8V to 15V
  • Programmable Output Current Limit without power loss
  • 0.25O Internal Power MOSFET Switch
  • Stable with Low ESR Output Ceramic Capacitors
  • 95% Efficiency @ 500mA (Vo=5V)
  • Fixed 700KHz Frequency
  • Thermal Shutdown
  • Cycle-by-Cycle Over Current Protection
  • Available in QFN10 (3mm x 3mm) and
  • 8-Pin SOIC Packages


  • fsw (max) (kHz)700
  • Vin (min) (V)4.5
  • Vin (max) (V)36
  • Iout (max) (A)1.5
  • Isw Limit (typ) (A)2.6
  • Max Duty Cycle (%)0.89
  • Vfb (V)0.805
  • Iq (typ) (mA)0.5
  • Regulated Outputs1
  • Vout (max) (V)15
  • Vout (min) (V)0.8
  • PGNo
  • SSExternal
  • GradeCatalog
  • PackageQFN-10 (3x3), SOIC-8
  • Common FeaturesExternal Soft Start, Power Good

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.