EV4012DS-00A
Boost White LED Driver
For TV Backlighting Application
EV4012DS-00A Rev.1.01 www.MonolithicPower.com 1
11/23/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The EV4012DS-00A Evaluation Board is
designed to demonstrate the capabilities of
MPS’ MP4012DS for TV backlighting
applications. MP4012DS is a current mode
controller designed for high brightness LEDs.
With a 50-90V input VIN and a 12V power
supply for MP4012DS, EV4012DS-00A can
deliver a regulated voltage to drive a LED string.
The LED current is regulated to about 120mA,
The EV4012DS-00A can be synchronized,
Several EV4012DS-00As can be used together
to drive a TV panel.
ELECTRICAL SPECIFICATION
Parameter Symbol Value Units
Input Voltage VIN 50-90 V
IC Power Supply 12VIN 12±10% V
PWM Dimming PWM 5±10% V
LED Current I
LED
120 mA
Switching Frequency fs 100 kHz
Over Voltage
Protection
V
LED-Max
212 V
FEATURES
• Constant Current WLED Driver
• High Frequency PWM Dimming
• Switching Frequency Synchronization
• Open Load Hiccup Mode Protection
• Short Load Hiccup Mode Protection
• Programmable Cycle-by-Cycle Over Current
Protection
• UVLO, Thermal Shutdown Protection
• Soft Start
APPLICATIONS
• TV Backlighting
• Large LCD Panel Backlighting
All 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.
Warning: Although this board is designed to satisfy safet
requirements, the engineering prototype has not been agency
approved. Therefore, all testing should be performed using an
isolation transformer to provide the AC input to the prototype
board.
EV4012DS-00A EVALUATION BOARD
(L x W x H) 7.35cm x 5.84cm x 14mm
Board Number MPS IC Number
EV4012DS-00A MP4012DS
EFFICIENCY (%)
V
IN
(V)
Efficiency vs. V
IN
90.00
91.00
92.00
93.00
94.00
95.00
96.00
97.00
50 60 70 80 90
