SainSmart LM2577, DC-DC step-up Power Converter
* Wide Input voltage: 3V-30V* Output 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-sink* Conversion efficiency: Up to 92% (output voltage higher, the higher the efficiency)* Switching Frequency: 50KHz* Rectifier: Non-Synchronous Rectification* Short circuit protection: current limiting, since the recovery* Operating temperature: Industrial grade (-40 to +85) (output power 10W or less)* Full load temperature rise: 40* Load regulation:  0.5%* Voltage regulation:  0.5%