EC5116-3A, 40V Asynchronous Step-Down Converter

General Description

The EC5116 is a current mode monolithic  buck switching regulator. Operating with an input range of 4.5-40V, the EC5116 delivers 3A of continuous output current with an integrated high side N-Channel MOSFET. At light loads, EC5116 operates in low frequency to maintain high efficiency and low output voltage ripple.  Current mode control provides tight load transient response and cycle-by-cycle current limiting.

The EC5116 guarantees robustness with input under-voltage lockout, start-up current run-away protection, output short protection, feedback short protection and thermal protection. The EC5116 is available in 8-pin SOP package, which provides a compact solution with minimal external components.


  • 5V to 40V operating input range
  • 3A output current
  • Up to 94% efficiency
  • High efficiency (>78%) at light load
  • Internal Soft-Start
  • Adjustable switch frequency
  • Input under-voltage lockout
  • Start-up current run-away protection
  • Output short protection
  • Feedback short protection
  • Thermal protection
  • Available in SOP8 and ESOP8 package


  • Distributed Power Systems
  • Networking Systems
  • FPGA, DSP, ASIC Power Supplies
  • Green Electronics/ Appliances

    Pin Configurations