EV0043 (MP1517) – 3A, 25V, 1.1MHz STEP-UP CONVERTER FOR WLED APPLICATIONS

EVALUATION BOARD

NOTICE:

The information in this document is subject to change without notice. Please contact MPS for current specifications.

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.

EV0043 (MP1517) Rev. 1.1

www.MonolithicPower.com

3

2/17/2005

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2005 MPS. All Rights Reserved.

PRINTED CIRCUIT BOARD LAYOUT

Figure 1—Top Silk Layer

Figure 2—Top Layer

Figure 3—Bottom Layer

QUICK START GUIDE

1. Connect LEDs to LED1 to LED4 terminals.

2. Connect positive and negative terminals of the 2.5V to 5.5V power supply to the IN and GND

pins, respectively.

3. Drive GATE of Q1 with a pulsed signal to switch between two (2) LED currents.

4. The device is automatically enabled because EN is connected to IN through a 0Ω resistor (R2).