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Ten small green circuit boards with blue adjustable potentiometers and LED indicators

KEHIPI

KEHIPI LM2596 10-pack DC-DC buck converter 3-40V to 1.5-35V 3A power adapter

SKU CH-M33Q-HEB2R MPN LM2596

Pack of ten adjustable buck modules stepping 3 V to 40 V down to 1.5 V–35 V at up to 3 A

  • Color10PCS
  • Adjustable 1.5 V to 35 V output from 3 V to 40 V input
  • Up to 3 A continuous current with 92 % peak conversion efficiency
  • Sanyo solid-state capacitors and 36 µm thick PCB for reliable operation
  • Compact 45 × 20 × 14 mm modules, ten pieces per pack
  • Operates from -45 °C to +85 °C with LED output indicator

10-pack buck converter modules for prototyping

This pack contains ten LM2596 step-down modules that accept DC input from 3 V to 40 V and provide an adjustable output from 1.5 V to 35 V at up to 3 A. They are suited for hobbyists, repair technicians and small-scale production runs needing multiple identical regulators.

Verify input exceeds output by 1.5 V

Before wiring, confirm your source voltage is at least 1.5 V higher than the desired output because the modules cannot boost. Do not reverse the input and output terminals, and plan to keep continuous load current under 2.5 A or add a heatsink for extended operation.

92 % peak efficiency with non-synchronous

The converters run at 65 kHz switching frequency and use non-synchronous rectification, reaching up to 92 % efficiency. Operating temperature spans -45 °C to +85 °C; load regulation is ±0.5 % and voltage regulation ±2.5 %. An onboard LED indicates output presence.

Highlights

  • Adjustable 1.5 V to 35 V output from 3 V to 40 V input
  • Up to 3 A continuous current with 92 % peak conversion efficiency
  • Sanyo solid-state capacitors and 36 µm thick PCB for reliable operation
  • Compact 45 × 20 × 14 mm modules, ten pieces per pack
  • Operates from -45 °C to +85 °C with LED output indicator

Specifications

BrandAITRIP
ModelLM2596
Part NumberLM2596
Color10PCS

Questions about this item

What comes in the 10-pack and do I need any extra parts to use them?

The pack contains ten LM2596 buck converter modules. Each has a blue potentiometer for voltage adjustment and an onboard LED indicator. You will need a multimeter to set the output voltage and a heatsink if you plan to run above 2.5 A for extended periods.

How do I choose between the input and output voltage ranges for my project?

Feed the module 3.0 V to 40 V DC, keeping the input at least 1.5 V above your desired output. The output can then be dialled from 1.5 V to 35 V using the potentiometer while watching a multimeter.

What does the 3 A maximum current mean when the board is inside my enclosure?

The module can deliver up to 3 A briefly, but the supplier advises staying at or below 2.5 A for continuous operation and adding a heatsink to manage heat in a confined space.

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