Microsemi

Analog Mixed Signal Group

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, 800-877-6458, Fax: 714-893-2570

Page 1

Copyright

© 2008

Rev. 1.0, 2008-12-04

PanelMatch

™ RangeMAX™ LXMG1627-05-44

5V Dual 4W CCFL Programmable Inverter Module

TM

®

DESCRIPTION

The LXMG1627-05-44 is a Dual 4W

Output

Direct

Drive™

CCFL

(Cold

Cathode

Fluorescent

Lamp)

Inverter

Module

specifically

designed

to

be

compatible with the Sharp LQ104S1DG51

/61 10.4”, LQ121S1DG41/61 12.1” as well

as

the

10.4”

Toshiba

Matsushita

LTA104D182F/183F

and

the

Samsung

LTM121SI-T01 12.1” or similar dual lamp

displays that have individual lamp output

connectors on one side of the panel.

LXMG1627

modules

provide

the

designer with a vastly superior display

brightness

range.

The

RangeMAX™

Digital

Dimming

Technique

supplies

flicker-free brightness control for any wide

range

(typically

50:1+)

dimming

application.

The included dimming input permits

brightness control from either, a DC

voltage source, a PWM signal or an

external potentiometer.

The

maximum

output

current

is

externally programmable (through the input

connector) over a range of 5mA to 6.5mA

in 0.5mA steps.

This allows the inverter to match the

panel’s lamp current specifications.

The modules convert a DC voltage

from the system battery or AC adapter

directly to high frequency, high-voltage

waves required to ignite and operate CCFL

lamps. A 12V input inverter version is also

available: LXMG1627-12-44.

The

module’s

design

utilizes

Microsemi’s LX6512 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 for open lamp condition.

The new LXMG1627-xx-44 modules

are

designed

therefore

as

a

wider

temperature

range

near

drop-in-

replacement

for

the

LXMG1623-xx-44

inverters, the major difference being the

input voltage adjustment range of the

BRITE (dimming) pin.

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

KEY FEA T URES

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 -30°C to 80°C

UL60950 E175910 Pending

RoHS Compliant

APPLICA T IONS

LCD’s Requiring Both Output

Connectors on One Side of Panel

Sharp LQ104S1DG51/61 and

LQ121S1DG41/61

Samsung LTM121SI-T01

Toshiba Matsushita

LTA104D182F/183F

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 HIGHLIG HT

DC Voltage

Source

Potentiometer

PWM

Signal

500k

PACKAGE ORDER INFO

LXMG1627-05-44

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

JST BHR-03VS-1