2A, 23V, 380KHz Asynchronous Step-Down Converter



The MP2354 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 20μA of supply current.



  • 0.18Ω Internal Power MOSFET Switch
  • Stable with Low ESR Output Ceramic Capacitors
  • Up to 95% Efficiency
  • 2A Output Current
  • Wide 4.75V to 23V Operating Input Range
  • Fixed 380kHz Frequency
  • Thermal Shutdown
  • Cycle-by-Cycle Over Current Protection
  • Programmable Under Voltage Lockout
  • Frequency Synchronization Input
  • Operating Temperature: -40°C to +85°C
  • Available in an 8-Pin SOIC Package


  • fsw (max) (kHz)380
  • 最小输入电压4.75
  • Vin (max) (V)23
  • Iout (max) (A)2
  • Isw Limit (typ) (A)3.4
  • Max Duty Cycle (%)0.9
  • Vfb (V)1.222
  • Iq (typ) (mA)1
  • 额定输出1
  • GradeCatalog
  • PackageSOIC-8
  • Control ModeCurrent Mode
  • Special Features外部频率同步