LM2596 3A DC-DC Adjustable Step-Down Power Supply Module (Buck Converter)

Description When your electronics project requires a specific lower voltage from a higher-voltage battery or power brick such as powering a 5-Volt Arduino from a 12-Volt car battery, or running 3.3-Volt sensors from a 9-Volt supply standard linear regulators often waste massive amounts of energy as pure heat. The LM2596 step-down (buck) converter module is the ultimate solution. By utilizing 150 kHz high-frequency switching technology, it efficiently drops higher input voltages down to a stable, continuous output while generating a fraction of the heat of older, traditional regulators. What makes this fully assembled breakout board incredibly popular is its onboard, multi-turn precision potentiometer. By simply turning the small brass screw with a flathead screwdriver, you can easily and precisely dial in your exact required output voltage anywhere from 1.25 Volts up to 35 Volts. Capable of comfortably delivering a continuous 2 Amps (and up to 3 Amps with a heatsink), it is an absolute essential component for custom DIY power supplies, robotics, and battery-powered electronics. Key Features & Functional Advantages Fully Adjustable Output: The onboard 25-turn precision trimpot gives you absolute, granular control over your output voltage, ensuring your sensitive logic chips receive the exact power they require. Wide Input Range: Readily accepts input voltages from 4 Volts all the way up to 40 Volts DC, making it highly compatible with everything from standard USB wall adapters to large 24-Volt industrial power rails. High-Efficiency Switching: Operates at a rapid 150 kHz frequency, allowing the circuit to run at up to 92 percent efficiency, which drastically extends your battery life and minimizes thermal waste. High Current Capacity: Can continuously deliver up to 2 Amps of current right out of the box, and up to 3 Amps if you attach a small aluminum heatsink to the main chip. Built-in Hardware Safety: Engineered with internal thermal shutdown and current-limiting protections to prevent the module from destroying itself if your circuit accidentally shorts out. Perfect For Microcontroller Power: Safely stepping down 9-Volt or 12-Volt battery packs to provide a rock-solid 5-Volt or 3.3-Volt rail for Arduino and Raspberry Pi boards. Battery-Powered Projects: Highly efficient power conversion ensures you get the absolute maximum run-time out of your lithium or lead-acid batteries. Custom Bench Power Supplies: Acting as the variable-voltage core of a DIY laboratory power supply for testing various electronic components on a breadboard. Automotive Electronics: Dropping a car's noisy, fluctuating 12-to-14 Volt alternator system down to a clean, steady voltage for custom dashboard displays and sensors. Technical Specifications Device Type: DC-DC Step-Down (Buck) Switching Converter Main Control Chip: LM2596 (or equivalent) Input Voltage Range: 4.0 Volts to 40.0 Volts DC Adjustable Output Voltage: 1.25 Volts to 35.0 Volts DC Maximum Output Current: 2.0 Amps continuous (3.0 Amps maximum with an added heatsink) Switching Frequency: 150 kHz Maximum Efficiency: Up to 92 percent Module Dimensions: Approximately 43mm x 21mm x 14mm Shipping information Ensure your order is placed by 2PM to guarantee next-day delivery! Our commitment to prompt service includes a 24-hour delivery system through our network of carriers, aimed at ensuring your package arrives right on schedule.Please note, a delivery fee of €4.99 applies for orders under €50. For those in remote areas, be aware that our couriers may apply an extra surcharge. This additional fee helps cover the costs of transporting your items to harder-to-reach locations.