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IC manufacturers JoulWatt

JoulWatt JW5116

3A, 40V Asynchronous Step-Down Converter


TopologyBuck Converter
Input voltage6-40 V
Output 15 V / 3 A


The JW5116 is a current mode monolithic buck switching regulator. Operating with an input range of 4.6-40V, the JW5116 delivers 3A of continuous output current with an integrated high side N-Channel MOSFET. At light loads, the JW5116 operates in low frequency to maintain high efficiency and low output ripple. Current mode control provides tight load transient response and cycle-by-cycle current limiting.The JW5116 guarantees robustness with input under-voltage lockout, input over-voltage protection, start-up current run-away protection, output short protection, feedback short protection, inductor short protection, and thermal protection.The JW5116 is available in 8-pin SOP package, which provides a compact solution with minimal external components.


  • 4.6V 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
  •  Inductor short protection
  •  Thermal protection

Typical applications

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