4

CL320

Pin Description

Pin #

Name

Description

1,2,3

EN1, EN2,

EN3

Output enable, active low.

4

GND

Circuit common.

5,6,7

OUT1, OUT2,

OUT3

Constant current output (sinking). Connect the cathodes of the LEDs to these pins.

8

VIN

Supply voltage. 6.5V to 90V. Bypass locally with a 100nF capacitor to ground.

Underside

Plate

GND

The exposed underside plate is internally connected to the GND pin. The plate may either

be left floating or connected to ground. Solder the plate to an exposed copper area on the

PCB for heatsinking purposes (see recommended layout).

Load Regulation

0

5

10

15

20

40

60

80

100

scale change

0

0.20

0.40

0.60

0.80

1.00

1.20

Recommended PCB Layout

Underside plate soldered

to copper area

Exposed copper area

may be plated