Our office will be closed from December 21, 2022 to January 02, 2023. Orders placed during this time will be processed starting on January 03, 2023.

DRV300 User Guide

Last updated: 2021-10-05 PDF version

DRV300 user interface


Terminal block

  • VCC: Supply input. Connect this pin to a 9V supply.

  • EN: Laser Enable pin. Apply a voltage between 2.2 V and 4.5 V to enable the laser current.

  • TRIM: Laser current trimming input with 2 kΩ input impedance, ± 2 V input voltage range and 10 Hz bandwidth. Gain is 10 mA/V for the 200 mA version.

  • IMON: Laser current monitoring pin. The voltage at this pin is proportional to the laser current (5 V/A for the 200 mA version).

  • LD+: Laser anode pin. Connect this pin to the laser anode.

  • GND: Ground. Connect this pin to the laser cathode.


  • EN: Enable / disable laser current.

  • ILIM: Set to ON/OFF for Low/High current limit.

  • G0 / G1: Set modulation gain as follows:

G0 G1 Modulation gain
OFF OFF High (x 1)
ON OFF Medium (x 1/5)
OFF ON Low (x 1/25)


The LED lights up when the laser driver is enabled.

Mounting multiple DRV300 in parallel

To mount the laser drivers in parallel, tie LD+ pins together as follows:

DRV300 laser drivers mounted in parallel

Can't find your answer? Contact us
[email protected]