LM2596 LM2596S with SMD LED DC-DC Step-Down Power Supply Module

The LM2596 DC-DC step-down power supply module is an adjustable buck converter built around the LM2596S chip, with an SMD LED on the board. It takes a higher DC voltage, such as 12 V or 24 V, and steps it down to a lower voltage that you set with the on-board trimmer, much more efficiently than a linear regulator. It is a popular way to power Arduino, ESP32 and LED projects from batteries, solar panels and adapters.

LM2596 Step-Down Module Specifications

• Regulator chip: LM2596S adjustable (ADJ) buck regulator
• Input voltage: about 4.5 V to 40 V DC
• Output voltage: adjustable from about 1.25 V, staying at least about 1.5 V below the input
• Output current: 3 A rated; about 2 A continuous is recommended without extra cooling
• Switching frequency: 150 kHz
• Adjustment: trimmer potentiometer on the board
• Indicator: SMD LED
• Connections: IN+, IN−, OUT+ and OUT− pads

LM2596 Step-Down Module Applications

• Powering Arduino and ESP32 boards from 12 V or 24 V supplies
• Running 5 V or 3.3 V modules from a car battery or solar panel
• Adjustable bench supply for testing circuits
• Driving LED strips and small motors at a lower voltage
• Robotics and battery-powered projects

What's in the Box

• 1 × LM2596S DC-DC step-down module

Tip: Set the output voltage with a multimeter before you connect your load: power the input, measure across OUT+ and OUT−, and turn the trimmer screw slowly. Double-check the input polarity, because reversing it can destroy the regulator.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.