EV3389EY-00A 12 STRINGS WHITE LED DRIVER

NOTICE:

The information in this document is subject to change without notice. Users should warrant and guarantee that third

party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not

assume any legal responsibility for any said applications.

EV3389EY-00A Rev. 1.0

www.MonolithicPower.com

4

9/23/2011

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2011 MPS. All Rights Reserved.

PRINTED CIRCUIT BOARD LAYOUT

Figure 1—Top Layer

Figure 2—Bottom Layer

QUICK START GUIDE

1. Connect the positive and negative terminals of the load panel (14 white LEDs in series, 12

stings paralleled) to the LED+ and LED1~12 pins on the EV board, respectively.

2. Connect the positive and negative terminals of the power supply (8V ~ 28V) to the VIN and

GND pins on the EV board, respectively.

3. Drive EN pin high (5V) to enable the MP3389.

4. For PWM dimming, apply a PWM rectangular waveform with a minimum voltage less than 0.5V

and a maximum greater than 5V on PWM DIM pin. The frequency of the PWM signal is

recommended between 200Hz to 2kHz.