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Analog Technologies

ATLS500MA106

Low Noise Constant Current Laser Controller

MECHANICAL DIMENSIONS AND MOUNTING

The ATLS500MA106 comes in 2 packages: through hole

mount and surface mount. The former is often called DIP

(Dual Inline package) or D (short for DIP) package and has

a part number: ATLS500MA106

−D, and the latter is often

called SMT (Surface Mount Technology) or SMD (Surface

Mount Device) package and has a part number:

ATLS500MA106

−S. See below Figure 13 and 14.

Figure 13. Dimensions of the DIP Package Controller

Figure 14. Dimensions of the SMT Package Controller

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

all the vias under the controller, otherwise, the vias can be

shorted by the bottom plate of the controller which is

internally connected the ground.

Please notice that, in the recommended foot print for the

DIP package, the holes for pin 2 to 6, and 8 to 12 have

larger holes than needed for the pins. This arrangement

will make it easier for removing the controller from the

PCB, in case there is a rework needed. The two smaller

holes, for pin 1 and 7, will hold the controller in the right

position.

It is also recommended to use large copper fills for VPS,

PGND, and the LDC pins, and other pins if possible, to

decrease the thermal resistance between the module and

the supporting PCB, to lower the module temperature.

Please be notice that the SMT version cannot be soldered

by reflow oven. It must be soldered manually.

20

1.5

× 14

1.0

× 12

0.8

× 2

12

14.5

2

× 14

R1.0

× 4

PCB Copper

without solder pad

PCB Hole

Orientation Mark

Outline

Figure 15. Top Side PCB Foot-print for the DIP Package

Figure 15 shows the foot print which is seen from the top

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

3.0

× 14

1.5

× 14

PCB Copper

with solder pad

Figure 16. Top View of the Bottom Side PCB Foot-print

Figure 16 shows the view of the bottom side PCB foot-

print.

Figure 17. Top View of the Bottom Side of Surface Mount

PCB Foot-print

Solder Pad

Copper with

Solder Mask