AL5811EV1 User Guide

75mA, 60V Low-side Adjustable Linear LED Driver

AL5811EV1 Rev2

Page 4 of 8

January 2013

www.diodes.com

II) Current LED String Procedure in Low side current LED configuration with PWM dimming

1. The evaluation board can be configured as Low side current LED configuration with use

of PWM dimming.

2. Ensure that the DC source is switched OFF or disconnected.

5. Connect the cathode wire of external LED string to LED terminal of the board.

6. Load 10KΩ to R2 on the board. Do not load any components on R1 and R3.

7. Insert external MOSFET across R3 pads of the board for PWM dimming control.

8. Ensure that the area around the board is clear and safe, and preferably that the board

and LEDs are enclosed in a transparent safety cover.

9. Turn on the main switch. LED string should light up with LED.