This is a simple but very useful board. It is a regulated 3.3V and 5V power supply that takes power from a standard USB host connector. This means you have a portable power supply you can plug wherever there is an USB connector available, a HUB, a laptop, etc.

The board has 3 pins: 1 for GND, 1 for 3.3V supply and 1 for 5V supply. There are no jumper settings or solder options to set: 3.3V and 5V are are always output as long as it’s connected to USB. Simple!

The board features a LK112M33TR ftom STmicroelectronics (low noise low drop voltage regulator), a female USB MINI connector and an indicator LED. The board mates well with pin headers or screw terminals.

The board comes fully mounted and tested.


  • Output current:
    • 5V pin: up to 500mA (standard USB)
    • 3.3V pin: up to 150mA.
  • Indicator led.
  • Ease of use.
  • Small size



Additional information

Weight 0.010 kg
Dimensions 25 × 11 × 10 mm



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AK-USBSUPPLY - 3.3V and 5V Power Supply From USB

Power supply board that delivers 3.3V and 5V from USB.


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