3A, 28V, 340KHz Synchronous Rectified Step-Down Converter

Talk to an Engineer or get a Quote

Product Description

The MP2303 is a monolithic synchronous buck regulator. The device integrates power MOSFETS that provide 3A continuous load current over a wide operating input voltage of 4.75V to 28V. Current mode control provides fast transient response and cycle-by-cycle current limit.  An adjustable soft-start prevents inrush current at turn-on. In shutdown mode, the supply current drops to 1μA.  This device, available in 8-pin SOIC and 3x3 10-pin QFN packages, provides a very compact system solution with minimal reliance on external components.


Product Features

  • 3A Output Current
  • Wide 4.75V to 28V Operating Input Range
  • Integrated Power MOSFET Switches
  • Output Adjustable from 0.8V to 25V
  • Up to 95% Efficiency
  • Programmable Soft-Start
  • Stable with Low ESR Ceramic Output Capacitors
  • Fixed 340KHz Frequency
  • Cycle-by-Cycle Over Current Protection
  • Input Under Voltage Lockout
  • Thermally Enhanced 8-Pin SOIC and 3x3 QFN10 


  • fsw (max) (kHz)340
  • Vin (min) (V)4.75
  • Vin (max) (V)28
  • Iout (max) (A)3
  • Isw Limit (typ) (A)6.3
  • Max Duty Cycle (%)0.9
  • Vfb (V)0.8
  • Iq (typ) (mA)1.3
  • Regulated Outputs1
  • Vout (max) (V)25
  • Vout (min) (V)0.8
  • GradeCatalog
  • PackageQFN-10 (3x3)
  • Common FeaturesExternal Soft Start, Synchronous Rectification

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.