EV3310EQ-00A – 1.3A STEP-UP WHITE LED DRIVER EVALUATION BOARD

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.

EV3310EQ-00A Rev. 1.0

www.MonolithicPower.com

4

1/6/2010

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2010 MPS. All Rights Reserved.

QUICK START GUIDE

1. Connect the positive and negative terminals of the load panel (10 white LEDs in series, 4 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 (5V~25V) to the VIN and GND

pins on the EV board, respectively. Turn the power supply on.

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

0.5V and a maximum greater than 2V on EN pin. The frequency of the PWM signal is

recommended between 200Hz to 2kHz.

5. For smaller than 5.5V input applications, short J1 for a stronger drive voltage source (as

compared with the internal 5V LDO).