LM2596 Buck Display Module - DC to DC Adjustable Step-Down Buck Module

Product Description The LM2596 Buck Converter Module with Display is an adjustable DC-DC step-down voltage regulator designed to efficiently convert a higher DC input voltage into a lower adjustable DC output voltage. It uses the popular LM2596 switching regulator and includes a built-in LED voltmeter for convenient voltage monitoring. Sri Lankan product specifications commonly list a 4V–40V DC input range and an adjustable 1.25V–37V DC output range. The output voltage can be adjusted using the onboard potentiometer, making this module useful when different voltage levels are required for electronic circuits. The integrated LED display allows you to monitor the voltage without requiring a separate multimeter. Depending on the module version and cooling conditions, the output is generally rated around 2A for stable continuous operation and up to 3A maximum. This LM2596 DC-DC step-down module is ideal for Arduino projects, ESP32 projects, LED applications, battery-powered devices, robotics, DIY power supplies, automotive electronics, CCTV equipment and general electronics projects. Specifications Module Type: DC-DC Adjustable Step-Down (Buck) Converter Regulator IC: LM2596 Input Voltage: DC 4V–40V Adjustable Output Voltage: 1.25V–37V DC Output Current: 2A recommended/continuous; 3A maximum Switching Frequency: Approximately 150kHz Display: Built-in LED voltmeter Display Range: Approximately 0–40V Voltage Adjustment: Onboard potentiometer Efficiency: Up to approximately 92%, depending on operating conditions Module Dimensions: Approximately 66 × 35mm for common display versions Converter Type: Non-isolated step-down converter Applications Arduino and ESP32 projects DIY adjustable power supplies LED lighting projects Battery-powered electronics Robotics projects DC motor and controller projects CCTV and electronic equipment Automotive electronics Embedded systems Voltage regulation projects Electronics laboratory and educational projects Important Note The LM2596 is a step-down converter, so the output voltage must be lower than the input voltage. Also, although many modules are advertised as 3A, continuous operation at 3A may require adequate cooling; around 2A is a more conservative continuous rating for common versions.