An internal thermostat shuts down the WLD safely if the device temperature exceeds 105°C. Remotely enable or disable current. Zero leakage current allows operation with VCSELs. Current range is scaled by an external resistor.
To operate from 3.6 V (for Lithium-Ion batteries) try the WLD3343HB. For 3 A operation, the WLD3343-3A is available. To drive with lower noise in Constant Current Mode only, the WLD3343-2L and WLD3343-3L drive up to 2 A and 3 A respectively. A circuit calculator tool speeds selection of external component values (see Design Tools tab). An evaluation board is available to simplify prototyping: WLD3393. Heatsinking solutions to use the WLD3343 at full current are available.
This laser diode driver is ideal for applications where space is tight. It is widely used in electro-optic qualification, raman spectroscopy, medical diagnostic equipment, range finders, and on research benches.