LM2596 DC-DC Buck Converter – Adjustable Step-Down Voltage Regulator Module The LM2596 DC-DC Buck Converter is a highly efficient, compact step-down voltage regulator module designed to convert a higher DC voltage into a lower, stable output. Built around the LM2596 switching regulator IC, this module allows adjustable output voltage, making it ideal for powering microcontrollers, sensors, LED strips, and other electronic components in DIY or embedded systems. With an input voltage range of 4V to 40V and an adjustable output from 1.25V to 37V, the module can deliver up to 2A continuous current (with proper heatsinking). It features an onboard potentiometer for easy voltage adjustment and includes a power indicator LED. Key Features Efficient step-down (buck) converter Adjustable output voltage via onboard potentiometer Power LED indicator for visual status Over-temperature and short-circuit protection (depends on module variant) Easy to interface with Arduino, ESP32, Raspberry Pi, and other electronics Product Specifications Feature Specification IC Chip LM2596 Module Type DC-DC Step-Down (Buck) Converter Input Voltage Range 4V to 40V DC Output Voltage Range 1.25V to 37V DC (adjustable) Output Current Up to 2A (recommended), max 3A (with heatsink) Conversion Efficiency Up to 92% Switching Frequency ~150kHz Output Ripple <30mV (depends on load and input) Operating Temperature -40°C to 85°C Dimensions ~43mm x 21mm x 14mm (varies slightly) Adjustment Method Multi-turn potentiometer Applications Power supply for Arduino, ESP32, Raspberry Pi Battery-powered systems DIY electronics projects LED strip dimmers and drivers Step-down regulator in embedded devices Robotics and IoT systems
