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3A, 24V, Synchronous Step-Down Converter


The EUP3293 is a high frequency synchronous rectified step-down current mode converter with built-in power MOSFETs. It offers a very compact solution to achieve a 3A continuous output current with excellent load and line regulation over a wide input supply range from 4.5V to 24V. The EUP3293 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 input under voltage lockout,input over voltage protection, output under voltage protection, over-current protection and thermal shutdown.

The EUP3293 requires a minimal number of readilyavailable standard external components, and is available in a space-saving 8-pin TSOT23 package.


  • • Wide Input Voltage Range: 4.5V to 24V
  • • 80mΩ/30mΩ Low RDS(ON) Internal Power MOSFETs
  • • High-Efficiency Current Mode Control
  • • Fixed 500kHz Switching Frequency
  • • Synchronizes from a 200kHz-to-1MHz External Clock
  • • Power Saving Mode at Light Load
  • • Internal Soft-Start
  • • Power Good Indicator
  • • Over Current Protection and Hiccup
  • • Thermal Shutdown
  • • Input Under Voltage Lockout
  • • Available in an 8-pin TSOT23 package
  • • RoHS Compliant and Halogen-Free


  • • Notebook Systems and I/O Power
  • • Digital Set-top Boxes
  • • LCD Monitors and TVs
  • • Distributed Power Systems
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