EV3389EF-00A
12 strings White LED Driver
Evaluation Board
EV3389EF-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 EV3389EF-00A is an evaluation board for the
MP3389EF, 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.
The MP3389 is available in TSSOP28 package.
ELECTRICAL SPECIFICATIONS
Parameter Symbol Value Units
Input Voltage V
IN
8 – 28 V
LEDs #
12 strings parallel
and 14 LEDs each
string
LED Current I
LED
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.
EV3389EF-00A EVALUATION BOARD
(L x W x H) 8.0cm x 3.0cm x 1.0cm
Board Number MPS IC Number
EV3389EF-00A MP3389EF