LM2596 DC-DC Buck Converter Step Down Module Power Supply 1.23V-30V

Features: The highest output current is 3A which is not mean that it will always be 3A. When it output 3A, the max voltage is 3.3V. And the difference between the output and input can't be to much. The difference can't over 7V. And when output power is over 10W, you should use a heatsink. All SANYO solid capacitors, the 36u thickening circuit boards, high-Q inductance with output value of high-power LED indicator. Specification: Input: DC 3V to 40V (input voltage must be higher than the output voltage to 1.5v above can not boost) Output: DC 1.5V to 35V voltage continuously adjustable, high-efficiency maximum output current of 3A Dimensions: 45 (L) X 20 (W) X 14 (H) mm (with potentiometer)