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The DRV110 works with floating or cathode grounded. Do not use the DRV110 to drive an anode grounded diode.
Current is set with the CURRENT trimmer and can be enabled / disabled with the mechanical switch.
For the DRV110-A-1200, current limit is 1250 mA or 500 mA, depending on the position on the ILIM jumper (H or L). For the DRV110-A-750, current limit is 800 mA or 400 mA. For the DRV110-A-375, current limit is 400 mA or 200 mA.
LD+: Connect the laser anode to this pin. The laser cathode must be connected to GND.
VCC: Power supply input. Maximum supply voltage is 19.5 V. Minimum supply voltage is Vmin = Rsense x Ilaser + 1 V + Vlaser, where Rsense = 10 Ω for the DRV110-A-375, 5 Ω for the DRV110-A-750, and 2.5 Ω for the DRV110-A-1200. Driving the DRV110 more than 1 V above Vmin results in increased power consumption without improving performance.
DIS: Apply a voltage between 2 V and 5 V to disable the laser current.
IMON: Current monitoring pin. Voltage at this pin is proportional with the laser current and reaches 300 mV when the current reaches the current limit defined by the ILIM jumper.