500mW-1 W 445nm/447nm/450nm Blue Laser Drive Circuit Board / Double lithium drive

Design Features:

Circuit control: Step-down circuit, constant current output

Size: 20mm (L)*15mm (W)

Output Current: >2.5A

Reverse Connection Protection: The unique design of the reverse connection protection, don't need worry about burning plate when batteries put in the wrong way.

Quick Start Protection: With soft start protection, even though you turn on or turn off power supply frequently, it won?t  damage the laser diode.

Pin Definition:

The pad is designed for 445nm driver board, you only need to weld according to the pin arranged in triangle , not like the other plate, to cut off one foot, or staggered welding.

Polar Definition:

Module shell is positive, back ends pad is negative. It is recommended that use 2pcs 3.7V lithium battery (such as 16340 /18650 /14500 and 18500) , or use 5.5V DC power supply directly.