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Small green circuit board with USB and micro USB ports, potentiometer and digital display

BUCIER

BUCIER USB Buck Boost Converter 3.5V-12V to 1.2V-24V Power Adapter

SKU CH-1FEN-6MF4V

A DC-DC buck-boost module converts 3.5 V to 12 V input into an adjustable 1.2 V to 24 V output with a multi-turn potentiometer and automatic state retention

  • Adjustable 1.2 V to 24 V output from a 3.5 V to 12 V source
  • 3 W maximum power delivery for low-voltage devices
  • Multi-turn precision potentiometer enables fine voltage setting
  • Automatic state retention preserves output data after power loss
  • One-key output shutdown stores configuration before power-off

USB Buck Boost Converter

This BUCIER module accepts a 3.5V to 12V input from a USB or micro USB source and converts it to an adjustable 1.2V to 24V DC output. It delivers up to 3W of power, making it suitable for prototyping, testing low-power circuits, or powering small sensors and microcontrollers from a standard USB port. The multi-turn precision potentiometer allows fine voltage adjustment for sensitive applications.

Step Up Step Down Regulator

The buck boost topology handles both step up and step down conversion in a single unit, so it fits into a build without needing separate modules for different voltage ranges. It draws power directly from a USB or micro USB plug, freeing up bench supplies and eliminating the need for an external wall adapter when working with 5V, 9V, 12V, 18V or 24V targets. Automatic state storage retains the last output setting after a power loss.

Sustained Load Behaviour

Under continuous operation the module maintains a regulated output up to its 3W limit, with the multi-turn potentiometer keeping the set voltage stable across the 1.2V to 24V range. The one key output shutdown lets you cut power instantly without unplugging the USB source, while the stored state prevents accidental voltage changes when the supply is restored. It is not suited for loads exceeding 3W or for applications requiring higher current than the USB input can provide.

Highlights

  • Adjustable 1.2 V to 24 V output from a 3.5 V to 12 V source
  • 3 W maximum power delivery for low-voltage devices
  • Multi-turn precision potentiometer enables fine voltage setting
  • Automatic state retention preserves output data after power loss
  • One-key output shutdown stores configuration before power-off

Specifications

BrandMustpoint
Part NumberL230516

Questions about this item

What is the maximum output power before the converter hits its limit?

The converter delivers up to 3 W, so sustained loads above that will trigger its protection.

How much heat or noise appears when the module runs continuously at full load?

No fan is fitted; the board relies on passive dissipation and stays silent, though the PCB can become warm at 3 W.

Which input connector must the buyer already have to power this board?

A USB or micro-USB source capable of 3.5 V to 12 V is required to feed the input.

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