Microsemi

Microsemi Integrated Products

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

Page 1

Copyright

© 2004

Rev. 0.2,2005-01-14

RangeMAX™

LXM1614E-14-11

TM

®

DESCRI PTI O N

Dual Drive, RangeMAX Wide Range

Dimming, Single Output Inverter.

The

LXM1614E series of Direct Drive™

CCFL (Cold Cathode Fluorescent Lamp)

Inverter Modules is specifically designed

for

driving

LCD

backlight

lamps.

Although similar to the RangeMAX

LXM1612 wide range dimming inverters,

the

LXM1614E

family

offers

two

separate brightness controls for lamp

current amplitude and duty cycle.

This

innovation of dual brightness control with

extended

dimming,

combined

with

Microsemi’s high efficiency Direct Drive

topology, provides the industry’s most

feature rich, small form factor inverter

available. The wide range dimming pro-

vides exceptional display readability at

less than 1% of full brightness, allowing

both power savings and low ambient light

operating capability.

Dual Drive Dimming Control.

The

inverters

provide

brightness

ad-

justments utilizing standard lamp current

amplitude control as well as supporting

Microsemi’s RangeMAX wide range

dimming technique.

Combining both

brightness controls into a single inverter

supports the “self heating” lamp tech-

nology by using a “boost” current

feature and still offers duty cycle control

for low brightness operation.

This

controlled

overdrive

capability

eliminates

the

need

for

traditional

resistive heater wire methods to ensure

light

output

at

extremely

low

temperatures.

The LXM1614E bright-

ness

controls

support

temperature

monitoring

with

look-up

table

applications by accepting either a PWM

input or DC voltage. Large panel lamps

with greater thermal inertia can also

utilize this “instant-bright” feature and

minimize warm up time.

(continued next page)

Protected by U.S. Patents: 5,923,129; 5,930,121; Patents Pending

KEY FEATUR ES

Independent Brightness

Controls For Lamp Current

Amplitude and Duty Cycle

RangeMAX 1-100% Wide

Range Dimming with

Controlled Overdrive Boost

On-Board Thermister auto-

matically limits maximum

lamp current

Supports Wide Input Voltage

Range 9-16V

High Efficiency, Single Stage

Direct Drive Topology

-40°C to +85°C Ambient

Temperature Operation

Output Open/Short Circuit

Protection

Up to 2000V Output Voltage

Capability

Single side PCB Component

Layout

APPLICATIONS

Self Heating And High

Pressure Lamp Technology

Automotive Navigation, GPS

Systems, Auto PC

Extended Cold Temperature

Operation

Aircraft Cabin Displays

Low Ambient Light Conditions

Requiring Wide Range

Dimming

“Instant On” To Full

Brightness For Large LCD

Backlight Panels

Industrial Notebook And

Workstations

PRODUCT H I GHLIGHT

Controlled overdrive mode of

LXM1614E Inverter accelerates

lamp warm-up time to provide

maximum light output even in

extreme

temperature

envi-

ronments

MODULE ORDER INFO

LXM1614E-14-11

JST SM02(8.0)B-BHS-1-TB

BHR-03VS-1