LM2596 Step-down DC-DC Converter Module for Arduino

The LM2596 regulator is a monolithic integrated circuit ideally suited for the easy and convenient design of a step−down switching regulator (buck converter). It is capable of driving a 3.0A load with excellent line and load regulation. This regulator module is suitable for voltage converting circuits in your project. The blue terminal block on the module is to input power when the two rows of pins are to output power – one for positive (marked with "+") and the other for GND.For more information, refer to http://wiki.sunfounder.cc/index.php?title=Step-down_DC-DC_Converter_Module   Features INPUT - DC 3.3V to 12V, no boost. OUTPUT - DC 3 V to 5 V, the maximum output current is 3 A. RICH PINS- Output enabled by pins so more modules can be powered. PIN EXTENSION - provided with a soldering pad for a terminal block of power output. DIMENSIONS - 25 x 50 x 16 mm (0.98 x 1.97 x 0.63 inch).   Application Voltage regulator for vehicles Power supply for electronic devices. When a 5v supply i