Microsemi

Linfinity Microelectronics Division

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

Page 2

Copyright

© 2000

Rev. 0.3b,2000-11-20

RangeMAX™

LXM1614-14-11

A

M I CROSEM I

COM P A N Y

 

  





An on-board thermister monitors the inverter’s relative

temperature and limits the maximum allowable lamp

current. This current limit automatically protects the lamp

and inverter as a function of temperature which helps

control the system during Boost mode.

RangeMAX Digital Dimming Technique.

Digital dimming provides flicker-free brightness control

in any wide range dimming application. Dimming ratios

greater than 100:1 can be achieved.

A video synch-

ronization feature allows wide ratio dimming without the

display disturbances and interference seen with competitive

products.

The resultant “burst drive” that energized the

lamp was designed specifically to ensure that no premature

lamp degradation occurs. Even in overdrive boost mode,

the waveform is carefully controlled to minimize the

effects that are detrimental to lamp life. Individual panel

specifications should be referenced for specific thermal and

electrical parameters.

Direct Drive Technology.

The module design is based on the Direct Drive topology,

which provides a number of cost, performance, and form

factor advantages. The LXM1614 series inverters eliminate

the classic resonant inductor/capacitors and integrate the

wide range dimming logic into the controller.

Additional Features.

Other benefits of this new topology are fixed-frequency

operation

and

secondary-side

strike-voltage

regulation.

Strike-voltage regulation minimizes corona discharge in the

output transformer and related circuitry, providing longer life

and higher reliability. All LXM1614 modules feature both

open and shorted lamp protection. The dual drive LXM1614

is fully customizable (electronically and mechanically) to

specific customer requirements.

  

     

  







  


 


This module has been designed to operate over a wide range of input and output conditions. However, best efficiency and performance will be obtained if

the module is operated under the condition listed in the ‘R.C.’ Column. Min. and Max. columns indicate values beyond which the inverter, although

operational, will not function optimally.

Recommended Operating Conditions

Parameter

Symbol

Min

R.C.

Max

Units

9.0

16.0

V

Output Power

6.0

W

Brightness Control Input Voltage Range

0.0

5.0

V

BOOST Control Input Voltage Range

0.0

5.0

V

Lamp Operating Voltage

900

Lamp Current Full Brightness

4.0

9.0

Operating Ambient Temperature Range

-40

85

°C

Output Power................................................................................................................................................................... 10W

Ambient Operating Temperature, zero airflow .................................................................................................. -40°C to 85°C

Storage Temperature Range ............................................................................................................................ -40°C to 85°C

Note 1: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of

specified terminal.