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Ten small green circuit boards with adjustable voltage regulators and heatsinks

LORDWORLD

LORDWORLD 10PCS LM2596HV AC/DC-DC Buck Converter 3A

SKU CH-E5ET-291QD

Pack of ten adjustable buck converters that step AC 5-30 V or DC 5-50 V down to 3.3-33 V at up to 3 A

  • Adjustable output from 3.3V to 33V for versatile projects
  • Handles AC 5V-30V and DC 5V-50V input ranges
  • LM2596HV high-voltage chip supports up to 50V input
  • Includes external heatsink for sustained 3A current delivery
  • Pack of 10 modules ready for multiple builds

10-piece adjustable buck converter kit

This pack contains ten LM2596HV modules that step AC or DC input down to a regulated DC output. Each board accepts AC 5 V to 30 V or DC 5 V to 50 V and delivers an adjustable range of DC 3.3 V to 33 V. The plug-in high-voltage regulator includes an external heatsink for sustained 3 A operation. The boards suit hobbyists and engineers building multiple low-voltage supplies from a single higher-voltage source.

Replaces individual fixed-output regulators

Instead of sourcing separate 3 V, 5 V, 12 V or 24 V modules, one board covers the whole range with a trimmer adjustment. The jump is worth it when a project needs several different rail voltages or when the input may vary between AC and DC sources. The reserved AC margin handles typical mains fluctuation without extra components.

Suits multi-rail prototyping and repair work

Makers who need up to ten adjustable rails from 3.3 V to 33 V at 3 A each will find the kit convenient. Builders requiring higher current, tighter regulation or isolated outputs should look at other topologies. Anyone needing a single fixed voltage or a smaller quantity can buy individual modules instead.

How it compares

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Price $22.99
Pricier than about 65% of the 1,761 comparable items (median $18.99).

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Specifications

Product
Brand nameLORDWORLD

Questions about this item

What input voltage ranges does the LM2596HV module accept?

The module accepts AC 5V to 30V or DC 5V to 50V input, with the AC range reserved for voltage fluctuations.

How do I set the output voltage on this buck converter?

Adjust the onboard potentiometer while measuring the output with a multimeter until you reach the desired DC 3.3V to 33V level.

When should I add a heatsink to the LM2596HV module?

Fit the external radiator when running near the 3A limit or at high input-to-output differentials to keep the regulator within safe temperatures.

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