LXM1623-05-44 Datasheet, PDF (1/6 Pages) Microsemi Corporation – 5V Dual 4W CCFL Programmable Inverter Module

PanelMatch™
LXM1623-05-44
INTEGRATED PRODUCTS
5V Dual 4W CCFL Programmable Inverter Module
PRODUCTION DATASHEET
DESCRIPTION
The LXM1623-05-44 is a Dual 4W RangeMAX™ Digital Dimming
Output Direct Drive™ CCFL (Cold Technique provides flicker-free
Cathode Fluorescent Lamp) Inverter brightness control in any wide range
Module specifically designed to be typically (50:1+) dimming application.
compatible with the Sharp LQ104S1DG21 The resultant “burst drive” that
/ 51 10.4”, LQ121S1DG31 / 41 12.1” as energizes the lamp is designed
well as the Samsung LTM121SI-T01 specifically to ensure that no premature
12.1” or similar dual lamp displays that lamp degradation occurs, while allowing
have both individual lamp output significant power savings at lower dim
connectors on the top side of the panel levels.
LXM1623 modules provide the The modules convert DC voltage from
designer with a vastly superior display the system battery or AC adapter directly
brightness range. This brightness range is to high frequency, high-voltage waves
achievable with virtually any LCD display. required to ignite and operate CCFL
The modules are available with a lamps. A 12V input inverter is also
dimming input that permits brightness available (LXM1623-12-44).
control from either, a DC voltage source, The modules design utilizes
a PWM signal or external potentiometer. Microsemi’s LX1689 backlight
The maximum output current is controller, which provides a number of
externally programmable (through the cost and performance advantages due to
input connector) over a range of 5.2 to the controller’s high level of integration.
6.7mA in 0.5mA steps. This allows the Other benefits of this new topology
inverter to match the panel’s lamp current are stable fixed-frequency operation,
specifications, or it can be used to secondary-side strike-voltage regulation,
purposely drive the lamps at a lower and both open/shorted lamp protection
current to save power or lower nominal with fault timeout.
brightness.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
Protected By U.S. Patents: 5,923,129; 5,930,121; 6,198,234; Patents Pending
PRODUCT HIGHLIGHT
UNIVERSAL DIMMING INPUT
"PWM", V_DC, OR POTENTIOMETER
DC Voltage
Source
Potentiometer
PWM
Signal
KEY FEATURES
ƒ Externally Programmable
Maximum Output Current
ƒ Easy to Use Brightness Control
ƒ RangeMAX Wide Range Dimming
ƒ Output Open & Short-Circuit
Protection and Automatic Strike-
Voltage Regulation and Timeout
ƒ Fixed Frequency Operation
ƒ Rated From -20 to 70°C
ƒ
APPLICATIONS
ƒ LCD’s Requiring Both Output
Connectors on One Side of
Panel
ƒ Sharp LQ104S1DG21/51 and
LQ121S1DG31 / 41
ƒ Samsung LTM121SI-T01
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’s
Specifications
ƒ Output Open Circuit Voltage
Regulation Minimizes Corona
Discharge For High Reliability
SELECTABLE MAXIMUM OUTPUT
CURRENT 5.2MA TO 6.7MA _RMS
Copyright © 2002
Rev. 1.0a, 2005-01-17
PART NUMBER
LXM1623-05-44
PACKAGE ORDER INFO
OUTPUT CONNECTOR
JST SM02(8.0)B-BHS-1-TB or
Yeon Ho 20015WR-05A00
INVERTER MATES DIRECTLY
TO PANEL CONNECTORS
JST BHR-03VS-1
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
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