The LM2596 DC-DC buck converter module is a widely used step-down voltage regulator. It utilizes the LM2596 switching regulator IC to efficiently convert a higher DC voltage (3V-40V) down to a lower DC voltage (1.25V-37V) with adjustable output.
Features: Input Voltage: 3V - 40V DC Output Voltage: 1.25V - 37V DC (adjustable) Output Current: Up to 3A (with heat dissipation, typically 2A without) Conversion Efficiency: Up to 92% Switching Frequency: 150kHz Short Circuit Protection: Yes Thermal Shutdown: Yes Ripple: Low (depends on load and input voltage) Pin Configuration: 1.IN+ → Input positive voltage 2.IN- → Input ground 3.OUT+ → Output positive voltage 4.OUT- → Output ground How to Use: 1.Connect the input voltage (e.g., from a battery or power supply) to IN+ and IN-. 2.Adjust the potentiometer to set the desired output voltage (measure with a multimeter at OUT+ and OUT-). 3.Ensure proper heat dissipation if drawing high currents. Applications: Powering Arduino, Raspberry Pi, ESP8266, and ESP32. Converting 12V/24V battery power to 5V or 3.3V. DIY electronics and robotics projects. LED strip and motor power supplies.