The ATLSXA202D series laser drivers have slightly different pin out as that of ATLSxA201D series laser drivers. This series of laser drivers have a synchronization function pin which allows using an external digital signal to synchronize the internal switching frequency of the PWM output stage. This function is useful when using the laser drivers with a switching power supply that has similar switching frequency or having multiple such laser drivers on the same PCB, to eliminate the beating frequency interference. They are designed for driving laser diodes with low noise constant current at high efficiency.
The "XA" in the part number specifies the maximum output current of the laser controller, it can be chosen to be: 500mA, 1A, 2A, 3A, 4A or 6A. The module is packaged in a metal enclosure, emitting zero EMI, and has DIP mounting package. These laser drivers are of 100 % lead (Pb)-free and RoHS compliant.