AL8806

Document number: DS35144 Rev. 5 - 2

2 of 15

www.diodes.com

July 2013

© Diodes Incorporated

AL8806

Pin Descriptions

Pin

Name

Pin Number

Function

MSOP-8EP

SW

5, 6

Switch Pin. Connect inductor/freewheeling diode here, minimizing track length at this pin to reduce EMI.

GND

2, 3

GND Pin

CTRL

4

Dimming and On/Off Control Input.

 Leave floating for normal operation.

 Drive to voltage below 0.4V to turn off output current

 A PWM signal (low level ≤ 0.4V and high level > 2.6; transition times less than 1us) allows the output current to be

adjusted below the level set by the resistor connected to SET input pin.

SET

1

Set Nominal Output Current Pin. Configure the output current of the device.

8

Input Supply Pin. Must be locally decoupled to GND with > 2.2µF X7R ceramic capacitor – see applications section for

more information.

EP

EP

Exposed pad:

Connect to GND and thermal mass for enhanced thermal impedance. It should not be used as electrical ground

conduction path.

N/C

7

no connection

Functional Block Diagram