EV3376-R-00A – 8 CHANNELS SYNCHRONOUS BOOST WLED DRIVER WITH I2C

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.

EV3376-R-00A Rev.1.0

www.MonolithicPower.com

6

9/5/2016

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2016 MPS. All Rights Reserved.

QUICK START GUIDE

Signal connection:

1. Connect the positive and negative terminals of the power supply (3V ~ 30V) to the VIN and GND

pins on the EV board, respectively.

2. Connect the positive and negative terminals of the load panel (8 strings) to the Vout and LED1~8

pins on the EV board, respectively. For unused string, it is recommended to connect the unused

LEDX pin to GND by a 0Ω resister.

3. Connect EN pin to enable signal(High level>1.5V).

4. Please connect SCL, SDA and GND of EV board to SCL, SDA and GND of a programmable kit

5. If work in external dimming mode, please add PWM input signal to PWM terminal on the EV board.

If work in internal dimming mode, nothing is need for PWM pin or pull PWM pin to GND.

Picture 3

Power on sequence:

1. Vin power on

2. EN power on

3. Setting Register by I2C interface as

picture 4 shows: (Refer to the “GUI

user guide” in another file.)

4. PWM signal on and the LED string

should be ignited. Program the PWM

duty cycle to dim the LED current.

Picture 4

—MP3376 GUI Interface