2A, 16V, 500kHz, Synchronous, Step-Down Converter with PG

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Product Description

The MP1474S is a high-frequency, synchronous, rectified, step-down, switch-mode converter with built-in power MOSFETs. It offers a compact solution to achieve a 2A continuous output current with excellent load and line regulation over a wide input-supply range. The MP1474S has synchronous-mode operation for higher efficiency over the output current-load range. 
Current-mode operation provides fast, transient response and eases loop stabilization.
Full protection features include over-current protection (OCP) and thermal shutdown (TSD). 
The MP1474S requires a minimal number of readily available, standard, external components and is available in a space-saving 8-pin TSOT23 package.


Product Features

  • Wide 4.5V to 16V Operating-Input Range
  • 150mΩ/70mΩ Low RDS(ON) Internal Power MOSFETs
  • High-Efficiency Synchronous-Mode Operation
  • Fixed 500kHz Switching Frequency
  • Synchronizes from a 300kHz to 2MHz External Clock
  • Power-Save Mode at Light Load
  • Internal Soft-Start
  • Power Good Indicator
  • Over-Current Protection and Hiccup
  • Thermal Shutdown
  • Output Adjustable from 0.8V
  • Available in a 8-pin TSOT-23 Package


  • fsw (max) (kHz)500
  • Vin (min) (V)4.5
  • Vin (max) (V)16
  • Iout (max) (A)2
  • Isw Limit (typ) (A)3
  • Max Duty Cycle (%)0.95
  • Vfb (V)0.807
  • Iq (typ) (mA)0.5
  • Regulated Outputs1
  • Vout (max) (V)15
  • Vout (min) (V)0.8
  • GradeCatalog
  • PackageTSOT23-8
  • Control ModeCurrent Mode
  • Common FeaturesLight-Load Efficiency, Power Good, Synchronous Rectification
  • 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.