LXM1614 View Datasheet(PDF) - Microsemi Corporation
Part Name
Description
Manufacturer
LXM1614 Datasheet PDF : 9 Pages
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A MICROSEMI COMPANY
RangeMAX™
LXM1614-14-11
DUAL DIMMING, EXTENDED TEMPEERATURE CCFL INVERTER MODULE
PRELIMINARY DATASHEET
LAMP VOLTAGE & LAMP CURRENT – BURST MODE OPERATION
– LXM1614 Combines Current Amplitude and Digital Techniques
The LXM1614 provides both lamp current amplitude control
(BOOST) and a brightness control (BRITE) for dimming.
Please see following sections for dimming and amplitude boost
control. To achieve extremely wide dimming ranges, rather
than only using the traditional dimming technique of varying
lamp current magnitude to adjust light output, RangeMAX
inverters utilize a fixed lamp current value with a duty cycle
control method.
The lamp current burst width can be modulated from 100%
(continuous lamp current) down to a 3% duty cycle, allowing
the lamp to be dimmed to less than 2% of its full brightness
As can be seen in Trace 4 of Figure 5, careful design
consideration was given to controlling lamp start voltage to
softly start current flow. This eliminates current overshoot
that can result in premature cathode wear and reduce lamp
life.
– 50% Burst Duty Cycle
– 2% Burst Duty Cycle
Copyright © 2000
Rev. 0.3b,2000-11-20
– 2% Burst Duty Cycle (Expanded Time Base)
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 6
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