EV3394ES-00A

4 strings 120mA White LED Driver

Evaluation Board

EV3394ES-00A Rev.1.0

www.MonolithicPower.com

1

3/14/2011

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The Future of Analog IC Technology

DESCRIPTION

The EV3394ES-00A is an evaluation board for

the MP3394ES, 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 MP3394 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 MP3394 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 #

4 LED string

12 LEDs/string

LED Current

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

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Monolithic Power Systems, Inc.