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Analog Technologies

ATLS2A202D

Constant Current Laser Driver

OUTLINE DIMENSIONS AND MOUNTING

The driver comes in only one package: through hole mount.

It is often called DIP (Dual Inline package) or D (short for

DIP) package and has a part number: ATLS2A202D.

Dimensions of the DIP package driver are shown in Figure

8

Figure 8. Dimensions of the DIP Package Driver

Figure 8 shows the foot-print which is seen from the end

side of the PCB.

Figure 9. End View of the PCB Foot-print

Figure 9 shows the foot-print which is seen from the top

side of the PCB, therefore, it is a “see through” view.

“Tent” (i.e. cover the entire via by the solder mask

layer) all the vias under the driver, otherwise, the vias

can be shorted by the bottom plate of the driver which

is internally connected the ground.

See Figure 10 and 11, it is recommended to use large

copper fills for VPS, LDC, and the LDA pins, and other

pins if possible, to decrease the thermal resistance

between the module and the supporting PCB, to lower

the module temperature.

Figure 10. Top View of the Top Side PCB Foot-print

Figure 11. Top View of the Bottom Side PCB Foot-print

Figure 11 shows the foot-print which is seen from the

bottom side of the PCB.

be soldered manually on the board by a solder iron of <

310ºC (590ºF), not go through a reflow oven process.