26V, 1A, 600kHz, High-Efficiency, Synchronous, Step-Down Converter



The MP2317 is a high-efficiency, synchronous, rectified, step-down, switch-mode converter with built-in internal power MOSFETs. It offers a very compact solution that achieves 1A of continuous output current with excellent load and line regulation over a wide input supply range. 

The MP2317’s switching edge is optimized for low EMI. SW anti-ringing is employed to address high-frequency radiation EMI issues.

Full protection features include over-current protection (OCP) and thermal shutdown. 

The MP2317 requires a minimum number of readily available, standard, external components and is available in a space-saving, 6-pin, TSOT23 package.



  • Wide 7.5V to 26V Operating Input Range
  • 1A Load Current
  • 100mΩ/50mΩ Low RDS(ON) Internal Power MOSFETs
  • Internal Power-Save Mode for Light Load
  • 600kHz Fixed Switching Frequency at CCM
  • Optimized for Low EMI
  • Internal Soft Start
  • Over-Current Protection (OCP) and Hiccup
  • Thermal Shutdown
  • Output Adjustable from 3.3V
  • Available in a TSOT23-6 Package


  • fsw (max) (kHz)600
  • Vin (min) (V)7.5
  • Vin (max) (V)26
  • Iout (max) (A)1
  • Vfb (typ) (V)0.791
  • Iq (typ) (mA)0.15
  • GradeCatalog
  • PackageTSOT23-6
  • Control ModeCurrent Mode
  • Common FeaturesLight-Load Efficiency, Synchronous Rectification