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Twenty small green circuit boards with blue potentiometers and black components

KEHIPI

KEHIPI LM2596 20-Pack DC-DC Buck Converter Power Adapter 3V-40V to 1.5V-35V 3A

SKU CH-REE8-2VPC2 MPN LM2596

Twenty step-down modules convert 3 V–40 V input to an adjustable 1.5 V–35 V output at up to 3 A with 92 % peak efficiency

  • Product color20PCS
  • 20 modules in one pack simplify bulk builds
  • Input 3.0 V to 40 V covers wide supply range
  • Adjustable output 1.5 V to 35 V fits many circuits
  • Up to 92 % conversion efficiency reduces heat loss
  • Operates from −45 °C to +85 °C for harsh environments

20-Pack DC-DC Buck Converter Kit

This 20-pack supplies LM2596 step-down modules for hobbyists, engineers and small-batch builders who need multiple adjustable voltage regulators. Each board converts a DC input into a lower, user-set output for prototyping, battery-powered projects or custom power supplies. The quantity suits workshops, classrooms or production lines that keep spares on hand.

Input Must Exceed Output by 1.5 V

The regulator only bucks voltage; it cannot boost. You must feed it at least 1.5 V above the desired output, with an absolute input ceiling of 40 V and an adjustable output range of 1.5 V to 35 V. Reverse connection of the terminals will damage the module, so verify polarity before powering.

92 % Peak Efficiency With Thermal Limits

At 12 V in and 5 V out the converter reaches 92 % efficiency, keeping heat low at light loads. For sustained operation, keep the output current under 2.5 A and attach a heat sink; the board is rated from -45 °C to +85 °C. A built-in LED shows when the output is active.

How it compares

Measured against everything we stock in AC Adapters & Power Bricks, at today’s prices. Recalculated every night.

Price $39.99
Pricier than about 73% of the 3,875 comparable items (median $23.99).

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Specifications

Product
Brand nameAITRIP
Model nameLM2596
Part number15352C
Product color20PCS

Questions about this item

What output voltage can I actually get from the 3 V to 40 V input range?

The module steps the input down to any voltage between 1.5 V and 35 V, provided the input stays at least 1.5 V above the chosen output.

How does the 65 kHz switching frequency affect the converter's practical performance?

At 65 kHz the LM2596 delivers up to 92 % conversion efficiency, with load regulation of ±0.5 % and voltage regulation of ±2.5 %.

What do I need to mount these boards in a project enclosure?

Each board uses through-hole pins for soldering or header connection; keep output current under 2.5 A or add a heat sink for continuous operation.

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