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EC3293B-3A, 18V, 500KHz, Syn. Step Down DC/DC Conv

General description

The EC3293B  is a high-frequency, synchronous, rectified, step-down, switch-mode converter with internal power MOSFETs. It offers a very compact solution to achieve a 3A continuous output current over a wide input supply range, with excellent load and line regulation. The EC3293B has synchronous-mode operation for higher efficiency over the output current-load range.

Current-mode operation provides fast transient response and eases loop stabilization.Protection features include over-current protection and thermal shutdown.

The EC3293B requires a minimal number of readily available, standard external components and is available in a space-saving TSOT23-6L package.


  4.5V to 18V input voltage

  Output adjustable from 0.6V to 15V

  Output current up to 3A

  Integrated 85mΩ/45mΩ power MOSFET switches

  Shutdown current 3μA typical

  Efficiency up to 95%

  Fixed frequency 500KHz

  Internal soft start

  Over current protection and Hiccup

  Over temperature protection

  RoHS Compliant and 100% Lead (Pb) Free



●  Distributed power systems

●  Networking systems

●   FPGA, DSP, ASIC power supplies

●   Notebook computers

●   Green electronics or appliance


Pin Configurations

Ordering info

Typical Applications circuit