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Two small green circuit boards with blue LED displays and silver potentiometers

KEHIPI

KEHIPI LM2596 Buck Converter 4-40V to 1.25-37V 3A Pack of 2

SKU CH-ZN0A-ZNT7V

Pack of two adjustable buck converters stepping 4-40V down to 1.25-37V at up to 3A with built-in voltmeter and protection

  • Adjustable output from 1.25V to 37V with a simple screwdriver turn
  • Built-in voltmeter shows input or output at ±0.1V accuracy
  • Calibration mode saves ±0.5V precision settings permanently
  • Triple protection guards against reverse, overheat and short-circuit faults
  • Pack of two delivers 3A peak current with 150kHz switching efficiency

Two-Pack LM2596 Step-Down Modules

This pack supplies two adjustable DC-DC buck converters built around the LM2596 switching regulator. Each module accepts an input range of 4-40V and delivers a regulated output from 1.25-37V at up to 3A peak. An integrated LED voltmeter shows input or output voltage at the press of a button. Built-in protections guard against reverse polarity, overheating and short circuits.

Ideal for Hobbyist Power Projects

Makers prototyping battery chargers, LED drivers or bench supplies will appreciate the dual display and calibration mode that stores offset corrections permanently. The potentiometer allows quick voltage trimming with a small screwdriver. Builders needing sustained loads above 2A or output power over 15W must add external heatsinking, and the 1.5V minimum headroom rule excludes very low-dropout applications.

3A Peak Current With Calibrated Display

The headline figure is the 3A maximum output current, rated for 2A continuous operation without extra cooling. This single limit determines whether the module can drive your intended load or if a higher-current regulator is required.

Highlights

  • Adjustable output from 1.25V to 37V with a simple screwdriver turn
  • Built-in voltmeter shows input or output at ±0.1V accuracy
  • Calibration mode saves ±0.5V precision settings permanently
  • Triple protection guards against reverse, overheat and short-circuit faults
  • Pack of two delivers 3A peak current with 150kHz switching efficiency

Specifications

BrandDROK

Questions about this item

What does the pack of 2 include and do I need anything else to start using them?

The package contains five LED display LM2596 buck converters, not two. You will need a 4 V to 40 V DC power source, a mini screwdriver for the potentiometer, and a heatsink if you plan to draw more than 2 A or exceed 15 W output power.

Should I choose the 3 A maximum or the 2 A rated current version for my load?

There is only one version in the pack. Each module is rated for 2 A continuous current and can reach 3 A maximum; for best thermals stay at or below 2 A and add a heatsink if you go higher.

What does the 1.25 V to 37 V output range mean when I connect a real load?

You can set the output anywhere between 1.25 V and 37 V provided the input is at least 1.5 V higher than your target voltage; the built-in voltmeter shows the actual output with ±0.1 V accuracy once input exceeds 4 V.

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