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Two green circuit boards with blue LED displays and adjustable potentiometers

KEHIPI

KEHIPI LM2596 2pcs DC-DC Buck Power Adapter 4.0-40V to 1.25-37V 2A LED Display

SKU CH-0P89-77NNR MPN LM2596

Two LM2596 buck converters step DC input from 4.0–40 V down to an adjustable 1.25–37 V at up to 2 A, each with an onboard LED voltmeter

  • Color2 PCS
  • Adjustable 1.25-37V output suits varied projects
  • Built-in LED voltmeter shows voltage at a glance
  • 92% peak efficiency reduces heat loss
  • Compact 57x36x13mm board fits tight enclosures
  • Two modules included for dual-rail or spare use

Two-module buck converter pack

This pack contains two LM2596 step-down modules that accept a DC input from 4.0 V to 40 V and deliver an adjustable output from 1.25 V to 37 V at up to 2 A. Each board includes an on-board LED voltmeter so the set voltage can be read without external tools. The modules are suited for hobbyist power-supply builds, battery projects or any circuit where a higher source voltage must be reduced efficiently.

Makers needing ready-to-use step-down boards

Builders who want a compact, pre-assembled buck converter with a visible voltage readout will find these modules convenient. They are not intended for applications that require output above 37 V, currents beyond 2 A, or input voltages outside the 4.0 V to 40 V range. Users needing isolated regulation, synchronous rectification or programmable control should consider other topologies.

LED display simplifies voltage setting

The integrated LED voltmeter shows the output level in real time, removing the need to connect a separate multimeter while trimming the potentiometer. This speeds up bench prototyping and reduces wiring clutter in permanent installations. No additional software, cables or mounting hardware are included in the package.

Highlights

  • Adjustable 1.25-37V output suits varied projects
  • Built-in LED voltmeter shows voltage at a glance
  • 92% peak efficiency reduces heat loss
  • Compact 57x36x13mm board fits tight enclosures
  • Two modules included for dual-rail or spare use

Specifications

BrandAITRIP
ModelLM2596
Part NumberLM2596 LED
Color2 PCS

Questions about this item

What input voltage source do I need to power the LM2596 module?

You need a DC source between 4.0 V and 40 V that can supply the required current; the input must be at least 1.5 V higher than your desired output voltage.

Will the 150 kHz switching frequency interfere with older analog circuits I keep in the same project?

The 150 kHz switching is well above audio range, so it typically does not couple into older analog stages, but keep wiring short and add decoupling if you notice noise.

How can I verify the module is regulating correctly after I adjust the trimmer?

The on-board LED voltmeter shows the output voltage in real time; set the trimmer until the display reads your target value between 1.25 V and 37 V.

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