Adjustable 3-13V 3A 25W Step down adjustable switching regulator

The DE-SWADJ3 is a small but high powered adjustable switching regulator for portable applications. The regulator has very high efficiency up to 96% and can provide 3-13V output at up to 3A (25W) from a 5 to 35V input voltage. The regulator is pin compatible with the 78XX regulators.


Not currently available

Our Code: MCU-60039


The DE-SWADJ 3 is designed to be stronger, faster and better than the previous 1A model. It can process 3A of current, typical ripple is 25mV and under ideal circumstances the regulator can be up to 96% efficient. 

Simple to use, the DE-SWADJ3 makes it simple to add an adjustable voltage source to a new or existing project with all the efficiency benefits of switch-mode power. The DE-SWADJ 3 is pin-compatible with the common 78XX family of linear voltage regulators, and has a small screw on top that allows you change the output voltage as your project evolves. It has integrated decoupling capacitors, so external capacitors are not generally necessary.

DE-SWADJ3 can deliver a maximum of 25 Watts.

The screw potentiometer on DE-SWADJ is worm-gear driven, so small vibrations and movement will not cause the voltage to shift. Use of glue to hold the screw in place is strongly discouraged and could damage the device. 

We also stock a breakout board to make it easy to hook up the regulator.

Voltage Regulator mounted in breakout board


  • Adjustable from 3 to 13V output using screw
  • 3A output at 3 to 8V
  • (Please see datasheet for current ratings at higher voltages)
  • >90% efficiency
  • 1.2V typical dropout voltage, 2.0v maximum at full load


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