LXM1614 View Datasheet(PDF) - Microsemi Corporation

Part Name

Description

Manufacturer

LXM1614

DUAL DIMMING, EXTENDED TEMPEERATURE CCFL INVERTER MODULE

Microsemi Corporation 



A MICROSEMI COMPANY

RangeMAX™

LXM1614-14-11

DUAL DIMMING, EXTENDED TEMPEERATURE CCFL INVERTER MODULE

PRELIMINARY DATASHEET

  


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.

      

Input Supply Voltage (VIN) ...................................................................................................................................-0.3V to 17V

Output Voltage, no load...........................................................................................................Internally Limited to 1800VRMS

Output Current................................................................................................................... 16mARMS (<2 minutes@TA<25°C)

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

Input Signal Voltage (BRITE, BOOST) ................................................................................................................. -0.3V to VIN

Input Signal Voltage (SLEEP, VSYNC).................................................................................................................... -0.3V to VIN

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.

 

 
 

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.

Parameter

Symbol

Recommended Operating Conditions

Min

R.C.

Max

Units

VIN Voltage Range

Output Power

Brightness Control Input Voltage Range

BOOST Control Input Voltage Range

Lamp Operating Voltage

Lamp Current Full Brightness

Operating Ambient Temperature Range

VIN

9.0

PO

VBRT_ADJ

0.0

VBST_ADJ

0.0

VLAMP

IOLAMP

4.0

TA

-40

16.0

6.0

5.0

5.0

900

9.0

85

V

W

V

V

VRMS

mARMS

°C

Copyright © 2000

Rev. 0.3b,2000-11-20

Microsemi

Linfinity Microelectronics Division

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

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