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The EUP3286F is a synchronous, step-down constant on-time buck regulator capable of driving 6A continuous load current. The EUP3286F can operate with an input range from 4.5V to 30V and the output can be externally set down to 0.8V. The EUP3286F provides excellent transient response with constant ontime control method while maintaining a nearly constant frequency. The switching frequency can be externally programmed from 100KHz to 1MHz.

Fault condition protection includes VIN under-voltage lockout, cycle-by-cycle current limiting, output overvoltage protection, output under-voltage protection, as well as thermal shutdown. Internal soft-start minimizes the inrush supply current and the output overshoot at initial startup.

The EUP3286F is available in a 4mm x 4mm TQFN-23 package.


  • • Wide Input Voltage Range: 4.5V to 30V
  • • 6A Output Current
  • • Excellent Line and Load Transient Responses
  • • Integrated 30mΩ N-Channel MOSFET for High Side
  • • Integrated 15mΩ N-Channel MOSFET for Low Side
  • • Programmable PWM Frequency from 100KHz to 1MHz
  • • Internal Soft-Start
  • • able Forced PWM or Automatic PFM/PWM Mode
  • • Power Good Monitoring
  • • Under-Voltage Protection
  • • Over-Voltage Protection
  • • Cycle-by-Cycle Current Limit
  • • Over-Temperature Protection
  • • Available in TQFN-23 4mmx4mm Package
  • • RoHS Compliant and Halogen-Free


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  • • Table PC
  • • Hand-Held Portable
  • • AIO PC
  • • Set-top boxes
  • • LCD TV
  • • Telecom/Networking/Datacom equipment
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