LXM1643-12-62 Datasheet, PDF (1/6 Pages) Micrel Semiconductor – 12V Quad 6W CCFL Programmable Inverter Module

PanelMatch™
LXM1643-12-62
INTEGRATED PRODUCTS
12V Quad 6W CCFL Programmable Inverter Module
PRODUCTION DATASHEET
DESCRIPTION
The LXM1643-12-62 is a Quad 6W The resultant “burst drive” that
Output Direct Drive™ CCFL (Cold energizes the lamp was designed
Cathode Fluorescent Lamp) Inverter specifically to ensure that no premature
Module specifically designed for driving lamp degradation occurs, while allowing
LCD backlight lamps. It is ideal for significant power savings at lower dim
driving typical 12.1” to 18.1” TFT panels. levels.
LXM1643 modules provides the The modules convert DC voltage from
designer with a vastly superior display the system battery or AC adapter directly
brightness range then typical with analog to high frequency, high-voltage waves
(amplitude control) dimming.
required to ignite and operate CCFL
The inverter includes a dimming input lamps.
that permits brightness control from either The LXM1643-12-62 inverter is
a DC voltage source or a PWM signal or intended for panel assemblies with
external Potentiometer. The maximum individual lamp connections, or where
output current is externally programmable lamps are spaced apart from each other.
over a range of 5 to 8mA in 1mA steps to The LXM1643-12-61 inverter should be
allow the inverter to properly match to a used for panel applications where lamp
wide array of LCD panel lamp current pairs are in close proximity and share a
specifications.
RangeMAX
Digital
common return (low side) wire.
Dimming Other benefits of this new topology
Technique provides flicker-free brightness are stable fixed-frequency operation,
control in any wide range typically (50:1+) secondary-side strike-voltage regulation
dimming application.
and both open/shorted lamp protection
with fault timeout.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
PRODUCT HIGHLIGHT
KEY FEATURES
ƒ Externally Programmable
Maximum Output Current
ƒ Easy to Use Brightness
Control
ƒ RangeMAX Wide Range
Dimming
ƒ Output Short-Circuit Protection
and Automatic Strike-Voltage
Regulation and Timeout
ƒ Fixed Frequency Operation
ƒ Rated From -20 to 70°C
ƒ UL 60950 E175910
APPLICATIONS
ƒ High Brightness Displays
ƒ Desktop Displays
ƒ Industrial Display Controls
BENEFITS
ƒ Smooth, Flicker Free 2%-
100% Full-Range Brightness
Control
ƒ Programmable output
current allows inverter to
mate with a wide variety of
LCD panel specifications
ƒ
Universal Dimming Input PWM, VDC, or Potentiometer
DC Voltage
Source
Potentiometer
PWM
Signal
"
"
Selectable Maximum Output Current 5mA to 8mA_RMS
PART NUMBER
LXM1643-12-62
PACKAGE ORDER INFO
OUTPUT CONNECTORS
Four JST SM02B-BHSS-1-TB
INVERTER MATES DIRECTLY TO
PANEL CONNECTORS
JST BHSR-02VS-1
Copyright  2002
Rev. 1.0, 2003-10-14
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
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