LXMG1611-01 Datasheet, PDF (1/6 Pages) Microsemi Corporation – Digital Dimming CCFL Inverter Module

Not Recommended For New Design
RangeMAX™
LXMG1611-01
TM
®
Digital Dimming CCFL Inverter Module
PRODUCTION DATA SHEET
DESCRIPTION
RangeMAX™ Wide Range Dimming, The modules are equipped with a
Single Output Inverter. The LXMG1611 dimming input that permits brightness
series of Direct Drive™ CCFL (Cold control from an external potentiometer or
Cathode Fluorescent Lamp) Inverter DC voltage source. The resultant "burst
Modules are specifically designed for drive" that energizes the lamp was designed
driving LCD backlight lamps.
specifically to ensure that no premature
Similar to the LXM1610, the lamp degradation occurs. (See "How
LXMG1611 excels in applications where RangeMAX™ Works" Section)
critical parameters include very wide range Wide Input Voltage Range. The modules
dimmability, high efficiency and reliable convert unregulated DC voltage from the
fail-safe design in a small form factor.
system battery or AC adapter directly to
Unlike the LXM1610 or any traditional high frequency, high-voltage waves required
dimming CCFL inverters, the LXMG1611 to ignite and operate CCFL lamps.
provides the designer a vastly superior Direct Drive Technology. The module
display brightness range. 100:1+ design is based on a new Direct Drive
brightness range is achievable with topology, which provides a number of cost
virtually any LCD display. Our wide and performance advantages. The
range dimming provides exceptional LXMG1611-01 series Direct Drive™
display readability at less than 1% of full inverters eliminate the classic resonant
brightness, allowing both power savings inductor and capacitors, thus reducing cost
and low ambient light operating capability and allowing a 30% reduction in module
(i.e. "night readable").
size.
The LXMG1611 is recommended for Additional Features. Other benefits of
use in panels with low-voltage insulation this new topology are fixed-frequency
on the lamp return wire.
operation and secondary-side strike-voltage
RangeMAX™ Digital Dimming regulation.
Technique. Digital dimming provides Strike-voltage regulation minimizes
flicker free brightness control in any wide- corona discharge in the output transformer
range dimming application. Dimming and related circuitry, providing longer life
ratios greater than 100:1 can be achieved. and higher reliability. All LXMG1611
Incorporation of a video synchronization modules feature both open and shorted lamp
feature allows wide ratio dimming without protection.
the display disturbances and interference The LXMG1611 is fully customizable
seen with competitive products.
(electronically and mechanically) to specific
customer requirements.
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; Patents Pending
KEY FEATURES
ƒ RangeMAX™ Wide Range
Dimming
ƒ 8V to 18V Input Voltage Range
ƒ 30% Smaller Than CS-ZVS
Models
ƒ Easy to Use Brightness Control
ƒ MicroAmp SLEEP Mode
ƒ Output Short-Circuit Protection
and Automatic Strike-Voltage
Regulation
ƒ 7.3mm Maximum Module Height,
16mm Module Width
ƒ Fixed Frequency Operation
ƒ RoHS Compliant
ƒ UL 60950 E175910
APPLICATIONS
ƒ Notebook and Sub-Notebook
Computers
ƒ Portable Instrumentation
ƒ Desktop Displays
ƒ Low Ambient Light Conditions
(i.e. Aircraft Cabins, Automobile)
BENEFITS
ƒ High Efficiency and Sleep mode
Feature Extends Computer Battery
Life
ƒ Smooth, Flicker Free 1-100% Full-
Range Brightness Control Gives
Product a High Quality Image
ƒ Output Open Circuit Voltage
Regulation Minimizes Corona
Discharge for Long Life and High
Reliability
ƒ Power Efficient, “Low Brightness”
Capability Allows for Advanced
Power Management
PRODUCT HIGHLIGHT
RangeMAX™ vs. Analog Dimming
5
Standard Analog
4
Dimming Inverter
3
Microsemi’s
RangeMAX^TM
2
1
0
30
45
60
75
90 105
Light Output (Nits)
ƒ RangeMAX™ technology allows the designer to operate in a
lower "brightness" and therefore at lower "power
consumption" than can be reached using traditional analog
dimming inverters.
ƒ Dotted line indicates area where panel variations and
parasitics will impact minimum light level with analog
dimming.
ƒ Data presented for a RangeMAX™ inverter driving a 13.3"
LCD with a 1.2 Nit to 120 Nit brightness range. The minimum
power levels were 0.4 watts (RangeMAX™) vs. 2.1 watts
(analog dimming) for a power consumption savings of 1.7
watts.
PACKAGE ORDER INFO
LXMG1611-01
Copyright © 1999
Rev. 1.0b, 2006-11-10
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
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