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Green rectangular circuit board with digital LED display and blue potentiometer, 66 by 39 millimetres

JacobsParts Inc.

JacobsParts Inc. DCMOD-E XL4015 5A Buck Converter Module with LED Voltmeter

SKU CH-G0QT-XN5KQ

Adjustable buck converter steps 4-38 V down to 1.25-36 V at up to 5 A with built-in LED voltmeter

  • TypeCurrent
  • Input Voltage38 Volts
  • Adjustable 1.25–36 V output powers diverse low-voltage projects
  • LED voltmeter toggles between input and output for instant monitoring
  • Up to 96 % conversion efficiency reduces heat and waste
  • 5 A peak / 3.5 A sustained handles loads up to 75 W
  • Compact 66 × 39 × 18 mm board fits tight enclosures

Adjustable Buck Converter for Low-Voltage Projects

This module steps down DC input between 4 V and 38 V to an adjustable 1.25 V to 36 V output. It suits makers powering 5 V USB gear or LED strips from a 12 V battery. The XL4015 IC handles up to 5 A peak or 3.5 A sustained, limited by a 75 W peak and 50 W continuous ceiling.

Onboard LED Voltmeter Simplifies Setup

A three-digit display shows either input or output voltage at the press of a small button. This removes the need for a separate multimeter while dialling in the set-point with the onboard potentiometer. The meter draws negligible current and fits within the 66 mm by 39 mm board outline.

Buck Topology Requires Input Headroom

The converter only operates when the supply exceeds the desired output by at least 1.5 V. Reverse polarity on either terminal can damage the IC, so wiring must be checked before power is applied. Efficiency reaches 96 % at 180 kHz switching, yet the 18 mm profile still demands airflow when running near the 50 W sustained limit.

Highlights

  • Adjustable 1.25–36 V output powers diverse low-voltage projects
  • LED voltmeter toggles between input and output for instant monitoring
  • Up to 96 % conversion efficiency reduces heat and waste
  • 5 A peak / 3.5 A sustained handles loads up to 75 W
  • Compact 66 × 39 × 18 mm board fits tight enclosures

Specifications

BrandJacobsParts
ModelDCMOD-E
TypeCurrent
Input Voltage38 Volts

Questions about this item

Will the XL4015 IC need replacement after continuous operation?

The XL4015 IC is a solid-state component with no moving parts and no scheduled replacement interval under normal use.

What limits sustained output before the module overheats or throttles?

Sustained load is capped at 50 W or 3.5 A, whichever is reached first; exceeding this triggers thermal protection.

How hot and noisy does the board get when running at 50 W all day?

The 180 kHz switching frequency keeps ripple low and the unit runs silently; expect noticeable warmth at full sustained load but no fan noise.

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