LXM1640-01 MICROSEMI, LXM1640-01 Datasheet

LXM1640-01

Manufacturer Part Number

LXM1640-01

Description

Manufacturer

MICROSEMI

Datasheet

1.LXM1640-01.pdf (5 pages)

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Rev. 1.0

H E

The Quad Output Module Ideal for

Desktop and Industrial Applications.

The LXM1640 Direct Drive

Fluorescent Lamp (CCFL) Inverter is a single

module designed to drive four lamps and

is targeted for use with desktop Liquid Crys-

tal Display (LCD) and industrial LCD pan-

els typically ranging in size from 14-inches

to 21-inches. This four output inverter is

the ideal solution to power virtually any

four lamp application.

ule design is based on a new Direct Drive

topology, which provides a number of cost

and per for mance advantages.

LXM1640-01 Direct Drive inverters eliminate

the classic resonant inductor and capaci-

tors, thus reducing cost and allowing a sub-

stantial reduction in module size.

benefits of this new topology are fixed-fre-

quency 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.

Applications. Our multi-output inverters

are designed to keep your application op-

IMPORTANT: For the most current data, consult LinFinity's web site: http://www.linfinity.com.

Direct Drive Technology. The mod-

Fixed-Frequency Operation. Other

Fail-safe Feature For Multiple Lamp

N F I N I T E

11861 W

Quad Connector Configuration

O W E R

Cold Cathode

ESTERN

Desktop Display

LXM1640 "U

D E S C R I P T I O N

CCFL Lamps

O F

I N

The

VENUE

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

N N O V A T I O N

M O D U L E O R D E R I N F O R M AT I O N

I N I T Y

, G

erating at near normal brightness in the

event that a lamp fails. This allows the

display to remain "on-line" until lamp re-

placement is convenient.

Supply. The LXM1640 module uses a stan-

dard 12V input supply. It also ensures

nominal power consumption with 4 lamps

requiring only 16 watts. Lamp current is

fully regulated with respect to input volt-

age and output impedance variations.

ules are equipped with a dimming input

that permits brightness control from an

external potentiometer or DC voltage. In

addition, the sleep input reduces module

power to a few microwatts in shut down

mode. All LXM1640 modules feature both

output open and short-circuit protection.

Backlight Inverter for Desktop/Indus-

trial Applications. Linfinity's proprietary

Direct Drive architecture is the highest ef-

ficiency, small form factor solution for all

multiple lamp applications. The LXM1640

is fully customizable (electronically and me-

chanically) to specific customer require-

ments.

ARDEN

Quad Module Uses Standard Power

Dimming Features. The LXM1640 mod-

The Most Efficient and Cost-effective

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

N I V E R S A L

ROVE

I C R O E L E C T R O N I C S

LXM1640-01

" M

, CA. 92841, 714-898-8121, F

O D U L E

I R E C T

O N N E C T I O N

R I V E

Production Data Sheet

Not Recommended for New Design

U A D

Dual Connector Configuration

N C

P T I O N S

A M P

: 714-893-2570

Drive Four Lamps With One Module

Small, Compact Size

High Efficiency

Multiple Output Connectors Provide Easy

LCD Connections

Low EMI And Noise

Low Power Sleep Mode

Output Short And Open Circuit Protection

3:1 Dimming Control

Adjustable Lamp Current Up To 6.0mA Per

Lamp

Long Lamp Life With Soft-Start And

Accurate Lamp Current Regulation

Desktop LCD Monitors And Panels

Industrial LCD Panels

Hi-Brite Displays

Cool Operation

Smooth, Easy-To-Use Brightness Control

Single 12 Volt Supply

Desktop Display

CCFL I

K E Y F E A T U R E S

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

CCFL Lamps

LXM1640-01

B E N E F I T S

N V E R T E R

O D U L E

Related parts for LXM1640-01

LXM1640-01 Summary of contents

Page 1

... Direct Drive Technology. The mod- ule design is based on a new Direct Drive topology, which provides a number of cost and per for mance advantages. LXM1640-01 Direct Drive inverters eliminate the classic resonant inductor and capaci- tors, thus reducing cost and allowing a sub- stantial reduction in module size. ...

Page 2

... SLEEP 12V , SLEEP = 0V IN (MIN (Internally Limited) RMS Recommended Operating Conditions Min. R.C. Max. 10 0.0 5.0 300 675 800 6 LXM1640-01 Min. Typ. Max. 5.4 6.0 6.6 DC 0.5 DC 1500 1800 5.0 0 2.2 V -0.3 0.8 90 110 150 0 10 500 RMS IN Units ...

Page 3

... Copyright © 1998 Rev. 1.0 1/ CCFL 13.2V ON, -0.3V < SLEEP < 0.8V = OFF 5.0V gives maximum lamp current LXM1640-01 All dimensions are in inches (mm) 6.89 (175) 6.73 (171) Ø 0.118 (3.0) Mtg. Hole, 2 Places CN1 LXM1640- 0.016 (4) CN2 0.33 (8.5) CN5 CN4 0.06 (1.52) 3 ...

Page 4

... Verify lamp wiring before connecting lamps to the inverter module. Connecting more than one lamp to one of the four inverter output circuits will result in reduced brightness. The LXM1640-01 module connectors are wired per industry standard. The lamp hot wires (high voltage wires) are always on pin and the cold wire (low voltage wire) is always on pin ...

Page 5

... Transformer Transformer Driver Controller V SENSE I SENSE FIGURE 3 — LXM1640 Block Diagram (Only one lamp shown 10.8V - 13. HI4 IN V HI3 V BRITE HI2 V HI1 LXM1640-01 SLEEP GND V LO FIGURE 4 — Potentiometer Brightness Control LXM1640- takes control SNS . This insures lamps will RMS V HI1 ...

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