DRV300 User GuideLast updated: 2021-10-05 PDF version
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:
|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: