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Catalog : Power Supplies : DC to DC Converters

DC-DC Buck Converter, 4-40VDC to 1.25-37VDC, 2A  with LED display

DC-DC Buck Converter, 4-40VDC to 1.25-37VDC, 2A with LED display

SKU: 40400

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Need a high quality power supply for your project? Here’s a very cool piece of kit. Feed up to 40V into this guy and get anything from 1.25 – 37VDC out, with up to 2A continuous (assuming your input has sufficient power)! Top it all off with a built-in voltage meter for easy adjustment.

To adjust output voltage, adjust the multi-turn trim pot using a screw driver while measuring the output voltage on a voltmeter.
To ensure that the voltage meter accuracy, please make sure that the input voltage is 4.5V or more.
Voltmeter fine-tuning: hold down the Right button for 1-2 seconds and release to enter fine-tuning mode, then adjust voltage display up or down by pressing left or right buttons. Once configured, press and hold Right button for 1-2 seconds to exit fine tuning mode.
The Voltage Meter can be turned off, for minimum power loss. To do so, press and release the left button until the display disappears.


  • Specifications:
  • Voltage Display of Vin and Vout
  • Voltage accuracy: +-0.05V
  • Input Voltage Range: 4.0 – 40V (must be 1.5V higher than Vout)
  • Output Voltage Range: 1.25 – 37V
  • Left switch: Voltage Display On/Off Switch
  • Right Switch: Voltage Display toggle (in/out)
  • Voltmeter Calibration
  • Peak Current: 3A
  • Nominal Current: 2A
  • Maximum Power: 15W
  • Size:6.1*3.4*12cm

US$ 11.23 price
US$ 10.67 5 - 9 (5% Off)
US$ 10.11 10 + (10% Off)