12V to 3V 3A Step-Down Waterproof Miniature DC-DC Converter Power Supply Module

  • Sale
  • Regular price $6.59

This miniature DC-DC step-down converter module converts a 12V DC input to 3V DC output at up to 3A current (9W maximum).


  • Epoxy sealed waterproof housing
  • Lightweight, compact, convenient to use and transport
  • Non-isolated
  • With overload / over-current / over / low voltage protection, stable performance
  • Auto recovery
  • Input voltage: DC 12V nominal, will operate on any input voltage from 8V to 24V DC
  • Quiescent input current (no load attached): <10mA
  • Maximum input current at 3A output: Approximately 0.75A at 12V input, 0.6A at 15V input
  • Output voltage: 3V (+10% -0%)
  • Maximum output current: 3A
  • Maximum Output Power: 9W
  • Efficiency: >96%
  • Size (L x W x H): 38 * 27 * 23 mm (Length including mounting tabs is 52mm)
  • Weight: 30g
  • Case color: White
  • Cable length: 12cm (approx)

Operating Notes:

As with any DC-DC converter, the input DC power supply powering this converter must be capable of providing the maximum power drawn by your load. If the input supply is not capable of providing the power, the converter will fold back the output voltage as necessary. Example: If your load draws 3A at 3V (9W), and the input supply is only capable of providing 12V at 1/2A (6W), the maximum output voltage the converter will deliver is 2V (6W/3A).

Package includes:
  • 1X 12V to 3V 3A Mini DC-DC Step Down Converter