EV3394S-S-00A
4 strings 120mA White LED Driver
Evaluation Board
EV3394S-S-00A Rev.1.0 www.MonolithicPower.com 1
10/9/2012 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The EV3394S-S-00A is an evaluation board for
the MP3394SGS, a step-up converter designed
for liquid-crystal displays that employ an array
of LEDs as the light source. It can drive up to 4
strings LEDs in parallel with 200mA/string
maximum current.
The MP3394S 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 MP3394S 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
V
IN
8 – 28 V
LEDs #
4 LED string
12 LEDs/string
LED Current I
LED
120/string mA
FEATURES
4 String, Max 200mA/String WLED Driver
8V to 28V Input Voltage Range
2.5% Current Matching Accuracy Between
Strings
Programmable Switching Frequency
PWM or DC Input Burst PWM Dimming
Open and Short LED Protection
Programmable Over-Voltage Protection
Cascading Capability with a Single Power
Source
Under Voltage Lockout
Thermal Shutdown
APPLICATIONS
Notebook PC
LCD Monitor
LCD TV
Handy Terminals Display
Automotive Systems and Tablet Computer
ll MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Quality Assurance. “MPS” and “The
Future of Analog IC Technology” are Registered Trademarks of Monolithi
Power Systems, Inc.
