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Ten tiny green circuit boards with solder pads and a blue potentiometer each

KEHIPI

KEHIPI DC 4.5-24V to 0.8-17V Buck Converter 3A 10pcs

SKU CH-DPMQ-DQF9A

Pack of ten compact buck converters stepping 4.5-24V input down to adjustable 0.8-17V or fixed 1.8V, 2.5V, 3.3V, 5V, 9V, 12V at up to 3A

  • Weight0.01 lb
  • Wide 4.5-24V input suits many DC sources
  • Adjustable 0.8-17V output plus six fixed voltages
  • Up to 3A continuous current with short-circuit protection
  • 5% peak efficiency reduces heat and waste
  • Industrial -40 to +85°C rating for harsh environments

Buck Converter Pack for Prototyping

This pack supplies ten DROK buck converter modules that step DC 4.5-24V down to an adjustable 0.8-17V or to fixed outputs of 1.8V, 2.5V, 3.3V, 5V, 9V or 12V selectable on the board rear. Each module handles up to 3A with added cooling at full load, while 12V in at 1.5A out runs without extra cooling. The integrated enable pin stops operation at low level, and soldering pads on 2.54mm spacing suit breadboard or perfboard work.

Input Range and Thermal Limits

The 4.5-24V input window means the modules cannot be fed from sources below 4.5V or above 24V, and the adjustable output stops at 17V. Peak efficiency reaches 97.5% at 6.5V to 5V and 0.7A, but at the full 3A the temperature rise hits 40°C, so sustained high-current use demands heatsinking or airflow. Operating temperature spans -40°C to +85°C, yet output power must be derated as temperature climbs.

Current Headroom and Protection Gaps

At 1.5A from a 12V source the converters run cool enough for enclosed builds, while 3A is only practical with active cooling. Short-circuit protection is present but not designed for repeated faults, and there is no over-voltage or reverse-connection protection, so wiring mistakes can damage the module. The 0.85mA quiescent draw suits battery-powered projects, but builders needing isolated outputs or higher voltage steps will need a different topology.

Highlights

  • Wide 4.5-24V input suits many DC sources
  • Adjustable 0.8-17V output plus six fixed voltages
  • Up to 3A continuous current with short-circuit protection
  • 5% peak efficiency reduces heat and waste
  • Industrial -40 to +85°C rating for harsh environments

Specifications

BrandDROK
Part NumberFBA200407_2x
Weight0.01 lb

Questions about this item

How do I choose between the adjustable 0.8-17V range and the six fixed voltages on the back of the board?

Use the fixed 1.8V, 2.5V, 3.3V, 5V, 9V or 12V settings by soldering the jumper on the rear; if your project needs a different voltage, leave the jumper off and turn the onboard potentiometer to dial in any value between 0.8V and 17V.

What does the 3A maximum output current mean when the converter is installed in my circuit?

The module can deliver up to 3A, but at full load the temperature rises about 40°C, so add a heatsink or forced airflow; at lighter loads such as 1.5A from a 12V input no extra cooling is required.

The enable pin is described as active-low — what voltage levels actually turn the output on and off?

Drive the enable pin high (2-5V) to run the converter, or pull it low (around 0V) to shut the output down; the pin defaults to enabled if left unconnected.

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