RaspDuino Step UP Power Module DC-DC 3,5 - 35V LM2577S

Step UP Power Module DC-DC LM2577S

Features :  
Modules nature: Non-isolated step-up (Boost)
Rectification: Non-synchronous rectification
Input voltage: 3.5V-35V 
Output voltage: 5V-56V (Must ensure that set the output voltage is higher than the input voltage)
Input current: 3A (max),Rated current:2A
Conversion efficiency: 90% 
DIY a mobile power supply
Boost charger
Power supply for electronic equipment