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Five green circuit boards with blue potentiometers and silver components

KEHIPI

KEHIPI LM2596 Buck Converter 5pcs Step Down DC Voltage Regulator Adjustable 4.5-40V to 1.25-37V Power Adapter

SKU CH-GYP8-DBXBY

Five adjustable step-down modules convert 4.5-40V input to 1.25-37V output with 92% peak efficiency and built-in protection

  • Weight2.39 ounces
  • Adjustable output 1.25-37V for flexible power delivery
  • Wide input range 4.5-40V suits many DC sources
  • Up to 92% efficiency reduces heat and waste
  • Built-in over-temperature and short-circuit protection adds safety
  • Five bare boards included for multiple projects or spares

Five-Pack LM2596 Buck Converters

This pack supplies five LM2596 step-down modules that accept a 4.5-40V input and deliver a continuously adjustable 1.25-37V output. Each board uses non-isolated, non-synchronous rectification and a 150KHz switching frequency to reach up to 92% efficiency. A multi-turn potentiometer sets the voltage with a mini screwdriver, while built-in over-temperature and short-circuit protection guard against faults.

Hobbyists and Repair Work

The modules suit experimenters, repair technicians and anyone needing multiple adjustable rails for prototyping, LED drivers or battery-powered projects. They are not suited for designs that require galvanic isolation, synchronous rectification or reverse-polarity protection on the input. Builds demanding output currents above 2A continuous or 3A peak without extra heatsinking should look elsewhere.

2A Continuous With Thermal Headroom

At the rated 2A the converter runs cool, but loads above 15W demand an added heatsink to keep the junction within the -40 to 85 Celsius range. A minimum 1.5V differential between input and output is required for stable regulation, and output ripple sits at 200mV. Static current draw is about 3mA, leaving ample headroom for low-power always-on circuits.

Highlights

  • Adjustable output 1.25-37V for flexible power delivery
  • Wide input range 4.5-40V suits many DC sources
  • Up to 92% efficiency reduces heat and waste
  • Built-in over-temperature and short-circuit protection adds safety
  • Five bare boards included for multiple projects or spares

Specifications

BrandDROK
Model180040_5x
Part Number180040_5x
Weight2.39 ounces

Questions about this item

What input power source do I need to run these LM2596 modules?

A DC source between 4.5V and 40V, such as a 12V, 24V or 36V supply or battery, with correct polarity and at least 1.5V above your desired output voltage.

Can I use one of these converters to step down from a 36V legacy rail to 12V for newer gear?

Yes, the 4.5-40V input range covers 36V and the adjustable output reaches 12V; add a heatsink if the load exceeds 15W.

How do I verify the output voltage is correct after wiring the board?

Adjust the on-board potentiometer with a mini screwdriver while measuring the output with a multimeter under no load until it reads your target between 1.25V and 37V.

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