P
A T E N T S
P
E N D I N G
LIN D
O C
#:
1640
LXM1640-01
D
I R E C T
D
R I V E
Q
U A D
L
A M P
CCFL I
N V E R T E R
M
O D U L E
T
H E
I
N F I N I T E
P
O W E R
O F
I
N N O VA T I O N
P
R E L I M I N A R Y
D
A T A
S
H E E T
DESCRIPTION
The Quad Output Module Ideal for
Desktop and Industrial Applications.
The LXM1640 Direct Drive
TM
Cold Cathode
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.
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. The
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.
Fixed-Frequency Operation.
Other
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.
Fail-safe Feature For Multiple Lamp
Applications.
Our multi-output inverters
are designed to keep your application op-
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.
Quad Module Uses Standard Power
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.
Dimming Features.
The LXM1640 mod-
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.
The Most Efficient and Cost-effective
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.
K E Y F E AT U R E S
s
Drive Four Lamps With One Module
s
Small, Compact Size
s
High Efficiency
s
Multiple Output Connectors Provide Easy
LCD Connections
s
Low EMI And Noise
s
s
s
s
Low Power Sleep Mode
Output Short And Open Circuit Protection
3:1 Dimming Control
Adjustable Lamp Current Up To 6.0mA Per
Lamp
s
Long Lamp Life With Soft-Start And
Accurate Lamp Current Regulation
A P P L I C AT I O N S
s
Desktop LCD Monitors And Panels
s
Industrial LCD Panels
s
Hi-Brite Displays
BENEFITS
s
Cool Operation
s
Smooth, Easy-To-Use Brightness Control
s
Single 12 Volt Supply
IMPORTANT:
For the most current data, consult LinFinity's web site:
http://www.linfinity.com.
PRODUCT HIGHLIGHT
LXM1640 "U
N I V E R S A L
" M
O D U L E
C
O N N E C T I O N
O
P T I O N S
Quad Connector Configuration
CN4
CN7
Dual Connector Configuration
CN2
CN5
LXM1640-01
CN1
CCFL Lamps
LXM1640-01
CN1
CN6
CN3
CCFL Lamps
CN6
CN5
CN4
CN3
CN7
Desktop Display
CN2
Desktop Display
M O D U L E O R D E R I N F O R M AT I O N
LXM1640-01
Copyright 漏 1998
Rev. 0.4 5/98
L
IN
F
INITY
M
ICROELECTRONICS
I
NC
.
11861 W
ESTERN
A
VENUE
, G
ARDEN
G
ROVE
, CA. 92841, 714-898-8121, F
AX
: 714-893-2570
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