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Five small green circuit boards with blue LED displays and metal coils

SMUGDESK

SMUGDESK LM2596S Step-Down Buck Converter 5-Pack with LED Voltmeter

SKU CH-7663-K4FE7

Five LM2596S buck converter modules with built-in LED voltmeters, adjustable 1.2537 V output from 4.040 V input at up to 2 A

  • Five-module pack for multiple projects
  • Input 4.040 V adjustable down to 1.2537 V at 2 A
  • Integrated LED voltmeter for real-time monitoring
  • LM2596S chip gives efficient step-down regulation
  • Suits DIY power supplies, LED drivers, motor control

5-Pack LM2596S Step-Down Modules

This five-piece set of LM2596S buck converters suits hobbyists, students, and engineers who need multiple adjustable power modules for prototyping, LED drivers, or motor control projects. Each board integrates an LED voltmeter so output levels can be monitored and trimmed without external meters.

Thermals, Noise and Power Draw

The LM2596S chip provides high-efficiency step-down regulation that keeps heat low during normal operation up to the rated 2A output. No fan or active cooling is present, so the modules run silently in typical bench or enclosure use. Quiescent draw is minimal, leaving nearly all input power available to the load.

Adjustable 1.25–37V Output Range

The single specification that decides fit is the continuously adjustable output spanning 1.25V to 37V from a 4.0V to 40V DC input. Builds requiring fixed voltages, higher current, or synchronous rectification will need a different module topology.

Highlights

  • Five-module pack for multiple projects
  • Input 4.040 V adjustable down to 1.2537 V at 2 A
  • Integrated LED voltmeter for real-time monitoring
  • LM2596S chip gives efficient step-down regulation
  • Suits DIY power supplies, LED drivers, motor control

Specifications

No published specifications for this item yet.

Questions about this item

How do I wire the LM2596S module and which step causes the most trouble?

Connect the DC source to the IN+ and IN− terminals, then adjust the trimmer while watching the LED voltmeter until the output reads the desired level between 1.2537V and the input voltage; the step most often missed is confirming the output under load before finalising the enclosure.

What maintenance or replacement will the 5-pack need over time?

The LM2596S buck chip and onboard components are solid-state with no moving parts, so no scheduled maintenance is required; a module only needs replacement if it suffers physical damage or an input voltage spike beyond the 4.040V rating.

What limit appears first when the converter runs continuously at high current?

The 2A maximum output current is the first hard limit; sustained operation near that level will cause the LM2596S chip to hit its thermal protection before any other parameter is reached.

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