EV3302DG-00A – 1.3A FIXED FREQUENCY 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.

EV3302DG-00A Rev. 1.1

www.MonolithicPower.com

4

10/18/2007

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2007 MPS. All Rights Reserved.

QUICK START GUIDE

1. Connect the positive and negative terminals of the load panel (3 white LEDs in series, 9 stings

paralleled, each string have a 43ohm droop resistor) to the LED+ and LED- pins on the EV

board, respectively.

2. Connect the positive and negative terminals of the power supply (3.3V ~ 6V) to the VIN and

GND pins on the EV board, respectively.

3. Drive EN pin high (1.5V < Ven < Vin) to enable the MP3302.

4. Apply a DC voltage of 0.7V to 1.4V on EN pin for analog dimming. Maximum brightness (180mA

typical) occurs with 1.4V voltage applied.

5. For PWM dimming mode, apply a PWM rectangular waveform with a minimum voltage less than

0.5V and a maximum greater than 1.5V on EN pin. The frequency of the PWM signal is

recommended between 100Hz to 10kHz.