EV3389EY-00A

12 strings White LED Driver

Evaluation Board

EV3389EY-00A Rev.1.0

www.MonolithicPower.com

1

9/23/2011

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2011 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The EV3389EY-00A is an evaluation board for the

MP3389EY, a step-up converter designed for large

liquid-crystal displays that employ an array of LEDs

as the light source. It can drive up to 12 strings

LEDs in parallel with 60mA maximum current.

The MP3389 uses external power MOSFET and

internal

current

mode,

fixed

frequency

architecture and includes current ballast in each

string terminal, which achieves 2.5% current

regulation

accuracy

between

strings.

Low

feedback voltage at each LED string help reduce

power loss and improve efficiency.

The MP3389 has multiple features to protect the

converter from fault conditions, including under-

voltage lockout, current limiting, over voltage,

short LED, open LED and thermal shut-down

protection.

ELECTRICAL SPECIFICATIONS

Parameter

Symbol Value

Units

Input Voltage

8 – 28

V

LEDs #

12

strings

parallel and 14

LEDs/string

LED Current

20/string

mA

FEATURES

• 8V to 28V Input Voltage Range

• External Power MOSFET

• Up to 90% Efficiency

• Programmable Over Voltage Protection

• Drives up to 12 Strings Parallel 2.5%

Current Regulation Accuracy Between Strings

• Programmable Switching Frequency:

• PWM or DC Input Burst PWM Dimming

• Open and Short LED Load Protection

• Thermal Shutdown

APPLICATIONS

• Notebook PC

• LCD Monitor

• LCD TV

• Handy Terminals Display

• Automotive Systems and Tablet Computer

“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of

Monolithic Power Systems, Inc.

EV3389EY-00A EVALUATION BOARD

(L x W x H) 7.5cm x 3.8cm x 1.0cm

Board Number

MPS IC Number

EV3389EY-00A

MP3389EY