Microsemi

Integrated Products

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 1

Copyright

© 2002

Rev. 1.1, 2006-11-15

PanelMatch

™

LXMG1623-12-4x

12V Dual 4W CCFL Programmable Inverter Module

TM

®

DESCRIPTION

The LXMG1623-12-4x is a Dual 4W

Output

Direct

Drive™

CCFL

(Cold

Cathode

Fluorescent

Lamp)

Inverter

Module specifically designed for driving

LCD backlight lamps.

It is ideal for

driving typical 6.4” to 10.4” TFT panels.

LXMG1623

modules

provide

the

designer with a vastly superior display

brightness range. This brightness range is

achievable with virtually any LCD display.

The modules are available with a

dimming input that permits brightness

control from either a DC voltage source or

a PWM signal or external Potentiometer.

The maximum output current is externally

programmable over a range of 5 to 6.5mA

in 0.5mA steps to allow the inverter to

properly match to a wide array of LCD

panel lamp current specifications.

RangeMAX

Digital

Dimming

Technique provides flicker-free brightness

control in any wide range typically (50:1+)

dimming application.

The

resultant

“burst

drive”

that

energizes

the

lamp

was

designed

specifically to ensure that no premature

lamp degradation occurs, while allowing

significant power savings at lower dim

levels.

The modules convert DC voltage from

the system battery or AC adapter directly

to high frequency, high-voltage waves

required to ignite and operate CCFL

lamps. A 5V input inverter also is

available (LXMG1623-05-4x), as well as

6W

versions

(LXMG1623-xx-6x)

for

driving larger higher voltage panels.

The modules design is based on

Microsemi’s

new

LX1689

backlight

controller, which provides a number of

cost and performance advantages due to

the controller’s high level of integration.

Other benefits of this new topology

are

stable

fixed-frequency

operation,

secondary-side strike-voltage regulation

and both open/shorted lamp protection

with fault timeout.

Protected By U.S. Patents: 5,923,129; 5,930,121; 6,198, 234; Patents Pending

KEY FEATUR ES

Externally Programmable

Maximum Output Current

Easy to Use Brightness Control

RangeMAX Wide Range Dimming

Output Open & Short-Circuit

Protection and Automatic Strike-

Voltage Regulation and Timeout

Fixed Frequency Operation

Rated From -20 to 70°C

UL60950 E175910

RoHS Compliant

APPLICATIONS

High Brightness Displays

Portable Instrumentation

Desktop Displays

Industrial Display Controls

BENEFITS

Smooth, Flicker Free 2%-100%

Full-Range Brightness Control

Programmable output current

allows inverter to mate with a

wide variety of LCD panel’s

specifications

Output Open Circuit Voltage

Regulation Minimizes Corona

Discharge For High Reliability

PRODUCT H I GHLIGHT

"

DC Voltage

Source

Potentiometer

PWM

Signal

Microsemi

PACKAGE ORDER INFO

TO

LXMG1623-12-41

JST SM02(8.0)B-BHS-1-TB (LF)(SN) or Yeon Ho 20015WR-05A00

JST BHR-03VS-1

LXMG1623-12-42

JST SM02B-BHSS-1-TB (LF)(SN) or Yeon Ho 35001WR-02A00

JST BHSR-02VS-1