3Pcs 3A XL6009 DC-DC 50KHz Adjustable Step-up Power Converter ModuleSpecification:Wide Input voltage: 3V-30VOutput Voltage: 4-35V (Adjustable)Output current: rated current 3A MAX ( Heat-sink Needed)If you need its output power greater than 15W, please add with heat-sinkConversion efficiency: Up to 92% (output voltage higher, the higher the efficiency)Switching Frequency: 50KHzRectifier: Non-Synchronous RectificationShort circuit protection: current limiting, since the recoveryOperating temperature: Industrial grade (-40 ℃ to +85 ℃) (output power 10W or less)Full load temperature rise: 40 ℃Load regulation: ± 0.5%Voltage regulation: ± 0.5%Size:47 x 26 x 15 mmPackage included:3 x XL6009 DC-DC 50KHz Adjustable Step-up Power Converter Module