3A, 40V Asynchronous Step-Down Converter

Topology: Buck
Input Voltage (min.): 6.00 V
Input Voltage (max.): 40.00 V
Output 1: 5.00 V / 3.000 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


  Order Code SPEC Product series L
RDC typ.
RDC max.
Bauform Version Samples
744770122 PDF WE-PD SMT Power Inductor 22 4.1 5 33 43 12 1280 Standard