LM2596 DC-DC Step-Down voltage Module (INPUT:4.5-40V OUTPUT:1.25-32V Adjustable)
Features:
Input voltage:4.5-40V
output voltage:1.25-32V continuously adjustable
max work current:3A
output power: natural cooling 15W, 25W with heatsink
conversion efficiency: up to 92% (output voltage higher, higher the efficiency)