EV4008-S-00A

High-Brightness High-Current Accuracy

WLED Controller

EV4008-S-00A Rev.1.0

www.MonolithicPower.com

1

6/26/2015

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2015 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The EV4008-S-00A is designed to demonstrate

the capabilities of MP4008. The MP4008 is a

current mode controller designed for driving the

high brightness Light Emitting Diodes (LEDs)

with wide input voltage 9V-28V. It can be used

both in Boost and SEPIC topologies.

With a 20-48V power supply PVIN and a 9-28V

IC supply for MP4008, The evaluation board

can drive a single LED string with the LED

current regulated to 350mA and VLED voltage

up to 70V. Apply a PWM dimming signal to do

PWM dimming. The Over-Voltage protection,

short LED protection, short inductor/diode

protection and over current protection are

integrated.

ELECTRICAL SPECIFICATION

Parameter

Symbol

Value

Units

Power Supply Voltage

PVIN

20-48

V

IC Supply Voltage

VIN

9-28

V

LED Voltage

70(max)

V

LED Current

350

mA

Switching Frequency

fs

180

kHz

Over Voltage

Protection Point

81

V

FEATURES

• Constant-current WLED Driver Controller

• 280mV Feedback Voltage with ±1.8%

Accuracy

• 9V-28V Input Voltage

• Leading Edge Blanking for Current Sense

• Frequency Fixed 180kHz

• Fast PWM Dimming

• Soft Start

• Over Voltage Protection

• Short LED Protection

• Short Output Protection

• Over Current Protection

• Short Inductor/Diode Protection

• VIN UVLO

• Thermal Shutdown

• Available in SOIC-8 package

APPLICATIONS

• LCD Backlighting

• DC/DC LED Driver

• General Illumination

All MPS parts are lead-free, halogen 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 Monolithic Power Systems, Inc.

Warning: Although this board is designed to satisfy safety

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.