638nm Orange Red Laser Diode Constant Current Drive Circuit Power Single Gear / Three Gears 300-500-800mW 1W

638nm Orange Red Laser Diode Constant Current Drive Circuit Power Single Gear / Three Gears 300-500-800mW 1W

The circuit board is a precision component. After receiving the package, it supports 7 days without reason to return the product without opening the original package. After the original package is opened, no return is provided. After sale, please consider whether you have the ability to install it manually before purchasing. Do not purchase if you do not have the ability to install! Our company does not provide trial play/trial loan/trial service. Thank you for understanding!
1. Parameters
Circuit control: external MOS, constant current output
Power regulation: Remove the 1206 package resistor on the board to reduce the output current
Size: 2210.55mm (widthlengththickness)
Reverse connection protection: unique reverse connection protection design
Pin definition: The pads are specially designed for 300-500mW 638nm pins. You only need to arrange the pins in a triangle and solder them naturally . It can also be used for driving 808nm and 660nm laser diode.
Battery: It is recommended to use 3.7V lithium battery (16340, 18650, 14500 and 18500 power supply), or directly use 5V DC power supply.
Note: If you are driving a 300mW 638nm diode, you only need to remove the R030 resistor. If you are driving a 500mW diode, you only need to remove the two R100 resistors.

2. Product measurements

Three gears: 

Suggested input voltage: 3-6V

Output current: 33.6mA -346.9mA