LXMG1643-12-62 MICROSEMI, LXMG1643-12-62 Datasheet

LXMG1643-12-62

Manufacturer Part Number

LXMG1643-12-62

Description

CCFL Inverter Quad Lamp 5W 72KHz 8-Pin

Manufacturer

MICROSEMI

Datasheet

1.LXMG1643-12-62.pdf (6 pages)

Specifications of LXMG1643-12-62

Number Of Lamps

Typical Input Voltage

12 V

Typical Lamp Start Voltage

1650 Vrms

Typical Lamp Operating Voltage

625 Vrms

Maximum Dimming

50:1(Typ)

Operating Temperature

-20 to 70 Â°C

Current page: 1 of 6
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Rev. 1.1, 2006-11-16

Output Direct Drive™ CCFL (Cold

Cathode

Module specifically designed for driving

LCD backlight lamps.

driving typical 12.1” to 18.1” TFT panels.

designer with a vastly superior display

brightness range then typical with analog

(amplitude control) dimming.

that permits brightness control from either

a DC voltage source or a PWM signal or

external Potentiometer.

output current is externally programmable

over a range of 5 to 8mA in 1mA steps to

allow the inverter to properly match to a

wide array of LCD panel lamp current

specifications.

Technique provides flicker-free brightness

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

dimming application.

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

IMPORTANT: For the most current data, consult MICROSEMI’s website:

LXMG1643-12-62

The LXMG1643-12-62 is a Quad 6W

LXMG1643

The inverter includes a dimming input

RangeMAX™

ART

UMBER

Fluorescent

modules

Digital

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

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

Lamp)

It is ideal for

The maximum

provide

Universal Dimming Input PWM, VDC, or Potentiometer

D E S C R I P T I O N

Dimming

Inverter

Microsemi

Selectable Maximum Output Current 5mA to 8mA

the

energizes

specifically to ensure that no premature

lamp degradation occurs, while allowing

significant power savings at lower dim

levels.

the system battery or AC adapter directly

to high frequency, high-voltage waves

required to ignite and operate CCFL

lamps.

intended for panel assemblies with

individual lamp connections, or where

lamps are spaced apart from each other.

The LXMG1643-12-61 inverter should be

used for panel applications where lamp

pairs are in close proximity and share a

common return (low side) wire.

are stable fixed-frequency operation,

secondary-side strike-voltage regulation

and both open/shorted lamp protection

with fault timeout.

P A C K A G E O R D E R I N F O

P R O D U C T H I G H L I G H T

DC Voltage

The resultant “burst drive” that

The modules convert DC voltage from

The LXMG1643-12-62 inverter is

Other benefits of this new topology

Source

UTPUT

Integrated Products

Microsemi

http://www.microsemi.com

the

ONNECTORS

Potentiometer

lamp

12V Quad 6W CCFL Programmable Inverter Module

was

Signal

PWM

™

designed

RODUCTION

RMS

ATA

Externally Programmable

Maximum Output Current

Easy to Use Brightness

Control

RangeMAX™ Wide Range

Dimming

Output Short-Circuit Protection

and Automatic Strike-Voltage

Regulation and Timeout

Fixed Frequency Operation

Rated From -20 to 70°C

UL 60950 E175910

RoHS Compliant

High Brightness Displays

Desktop Displays

Industrial Display Controls

Smooth, Flicker Free 2%-

100% Full-Range Brightness

Control

Programmable Output

Current Allows Inverter to

Mate With a Wide Variety of

LCD Panel Specifications

NVERTER

K E Y F E A T U R E S

A P P L I C A T I O N S

LXMG1643-12-62

HEET

JST BHSR-02VS-1

B E N E F I T S

ANEL

ATES

ONNECTORS

IRECTLY

Page 1

Related parts for LXMG1643-12-62

LXMG1643-12-62 Summary of contents

Page 1

... The LXMG1643-12- Quad 6W Output Direct Drive™ CCFL (Cold Cathode Fluorescent Lamp) Inverter Module specifically designed for driving LCD backlight lamps ideal for driving typical 12.1” to 18.1” TFT panels. LXMG1643 modules provide designer with a vastly superior display brightness range then typical with analog (amplitude control) dimming ...

Page 2

... ATA HEET ( (Internally Limited) RMS Units R.C. Max 12 13 13.8 5.0 6.0* W 2.0 V 625 730 V RMS 8 mA RMS 70 °C RMS LXMG1643-12-62 Min Typ Max = 12V IN1 DC 4.0 5 5.5 = 12V IN1 DC 5.0 6 6.6 = 12V IN1 DC 6.0 7 7.7 = 12V IN1 DC 7.0 8 8.8 = 12V ...

Page 3

... SET2 LAMP RMS ESCRIPTION < 13.2V) IN1 < 0.8 = OFF, >= 2. SLEEP SLEEP ). 2.0V gives maximum lamp current Microsemi Integrated Products LXMG1643-12- RODUCTION ATA HEET LXMG1643-12-62 Min Typ Max -300 50 2.0 2.05 0.4 0.5 2.0 V IN1 -0.3 0.8 0.4 -300 0 Open 1750 = Open 85 Units µ ...

Page 4

... PCB tolerances ± 0.5mm High Voltage Transformers Controller Comparator V IN1 + Output Ramp Driver - Ramp OC SENSE Gen OV SENSE 10K I SENSE Microsemi Integrated Products LXMG1643-12- RODUCTION ATA HEET Nominal Output Current 8.0mA 7.0mA 6.0mA 5.0mA 4mm 0.16in 1.10in OUNTING OLES DIA . Warning High Voltage Present at ...

Page 5

... After about a second without success the inverter will shutdown. In order to restart the inverter it is necessary to toggle the sleep input or cycle the V Inputs) supply. In the timeout shutdown mode input drain current will be about 8mA. Microsemi Integrated Products LXMG1643-12- RODUCTION ATA HEET SLEEP input ...

Page 6

... Copyright © 2005 Rev. 1.1, 2006-11-16 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 ™ ™ ® 12V Quad 6W CCFL Programmable Inverter Module P RODUCTION Microsemi Integrated Products LXMG1643-12- ATA HEET Page 6 ...

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