LXM1621-03 View Datasheet(PDF) - Microsemi Corporation
Part Name
Description
Manufacturer
LXM1621-03 Datasheet PDF : 11 Pages
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INTEGRATED PRODUCTS
RangeMAX
LXM1621-xx
DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE
PRELIMINARY DATA SHEET
DESCRIPTION
The LXM1621 Direct Drive™ CCFL Incorporation of a video synch-
(Cold Cathode Fluorescent Lamp) ronization feature allows wide ratio
Inverter Modules are specifically dimming without the display disturbances
designed for driving two lamp LCD and interference seen with competitive
backlight displays.
products.
Similar to the LXM1620, the The modules are equipped with a
LXM1621 excels in applications where dimming input that permits brightness
critical parameters include very wide control from an external potentiometer or
range dimmability, high efficiency, and DC voltage source. The resultant “burst
reliable fail-safe design in a small form drive” that energizes the lamp was
factor. These 12 volt modules are designed specifically to ensure that no
specifically designed with desktop and premature lamp degradation occurs (see
industrial applications in mind.
the “How RangeMAX works” section).
Unlike the LXM1620 or any traditional The module design is based on a new
dimming CCFL inverters, the LXM1621 Direct Drive topology, which provides a
provides the designer a vastly superior number of cost and performance
display brightness range. 100:1+ advantages.
brightness range is achievable with a Linfinity’s multiple lamp inverters
standard LCD display (see Product include a built in connector array for the
Highlight). Our wide range dimming most common LCD lamp configurations.
provides exceptional display readability at Other benefits of this new topology are
less than 1% of full brightness, allowing fixed-frequency operation and secondary-
both power savings and low ambient light side strike-voltage regulation.
operating capability(i.e. “night readable”). The LXM1621 is fully customizable
Digital dimming provides flicker-free (electronically and mechanically) to
brightness control in any wide-range specific customer requirements.
dimming application.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
PRODUCT HIGHLIGHT
KEY FEATURES
RangeMAX Wide Range Dimming
8V to 16V Input Voltage Range
Small Form Factor
Easy To Use Brightness Control
MicroAmp SLEEP Mode
Output Short-Circuit Protection
And Automatic Strike-Voltage
Regulation
Fixed Frequency Operation
Universal Connector
Configuration
APPLICATIONS
Hi-Brite Displays
Desktop Displays
Low Ambient Light Conditions
(i.e. Aircraft Cabins, Automobile)
Industrial Applications
BENEFITS
High Efficiency Reduces Heating
Problems
Smooth, Flicker Free 0-100% Full-
Range Brightness Control Gives
Your Product A High Quality
Image
Output Open Circuit Voltage
Regulation Minimizes Corona
Discharge For Long Life And High
Reliability
Power Efficient, “Low Brightness”
Capability Allows For Advanced
Power Management
Copyright 2000
Rev. 0.8, 2003-08-28
DC Voltage
Source
Potentiom eter
BRITE
W
U NIVERSAL DIMMING INPUT
VDC OR POTENTIOMETER
MODULE ORDER INFO
PART NUMBER LAMP CURRENT LAMP RUN VOLTAGE (RMS)
LXM1621-01
LXM1621-02
LXM1621-03
LXM1621-04
7mA
6mA
6.5mA
5mA
500-750
350-550
350-550
470-640
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
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