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Two small green circuit boards with blue potentiometers and silver inductors

JacobsParts Inc.

JacobsParts LM2596 DC-DC Buck Converter Step-Down Module 2-Pack

SKU CH-ZR9S-C59AC

A high-efficiency LM2596 buck converter steps DC 3.2 V–35 V down to an adjustable 1.25 V–30 V at up to 3 A with 92 % peak efficiency.

  • Product typeCurrent
  • High-efficiency power conversion with 92% peak efficiency
  • Adjustable output from 1.25V to 30V with 3A max current
  • Compact 45 x 23 x 14 mm module fits tight spaces
  • Built-in short circuit and over-temperature protection for safe operation
  • Wide 3.2V to 35V input range requires only 1.5V headroom

Two-Pack LM2596 Step-Down Modules

The JacobsParts LM2596 is a DC-DC buck converter module sold as a two-pack for electronic projects. It steps down input voltage to a lower adjustable output. Each module uses the LM2596 regulator IC with high-Q inductors and solid-state capacitors. The compact board measures 45 x 23 x 14 mm including the potentiometer.

Input Range and Voltage Drop Requirement

The module accepts a DC input range of 3.2V to 35V. The input must remain at least 1.5V higher than the desired output voltage for regulation to function. This constraint defines the practical lower limit for input voltage at any given output setting. Peak conversion efficiency reaches 92 percent under optimal conditions.

3A Maximum Output Current Limit

The adjustable output spans 1.25V to 30V with a maximum output current of 3A. This current ceiling is the single specification that determines whether the module suits a specific load. Builds requiring more than 3A continuous current cannot use this part. Short-circuit and over-temperature protection are integrated for safety.

How it compares

Measured against everything we stock in Voltage Converters & Transformers, at today’s prices. Recalculated every night.

Price $4.99
Cheaper than about 99% of the 10 comparable items (median $26.99).

Specifications

Product
Brand nameJacobsParts
Model nameDCMOD-U
Product typeCurrent

Questions about this item

Should I pick the 2-pack or buy singles for my project?

The listing is a 2-pack of LM2596 buck converter modules, each measuring 45 x 23 x 14 mm with a blue potentiometer for voltage adjustment.

What output voltage and current can I actually get from the 1.25 V to 30 V range and 3 A rating?

You can set any output from 1.25 V to 30 V provided the input is at least 1.5 V higher; the module delivers up to 3 A with peak conversion efficiency of 92 %.

What are the input voltage limits and what does the 1.5 V headroom mean in practice?

The input range is 3.2 V to 35 V DC, and the output must stay at least 1.5 V below the input voltage for proper regulation.

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