Product category:
Analogue and Mixed Signal ICs
News Release from: austriamicrosystems | Subject: AS3693
Edited by the Electronicstalk Editorial
Team on 17 December 2007
LED driver meets LCD panel-makers' needs
Designed for LCD TV backlight applications, the innovative AS3693 allows dimming of multiple segments of the LCD TV backlight, enabling highest contrast ratios and best picture quality.
austriamicrosystems has codeveloped a new high precision LED driver with LG.Philips LCD, a leading provider of liquid crystal displays Designed for LCD TV backlight applications, the innovative AS3693 allows dimming of multiple segments of the LCD TV backlight, enabling highest contrast ratios and best picture quality
This article was originally published on Electronicstalk on 10 Dec 2007 at 8.00am (UK)
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So-called block dimming results in only the required segments of the backlight being on, making bright spots in the TV picture really bright and dark parts completely black.
The AS3693 high precision LED driver offers control of 16 LED channels, where each channel can be controlled completely independently via built-in PWM generators while withstanding up to 50V.
With the highest precision current control of 0.5% the AS3693 offers better accuracy than any competitor 16 channel LED driver currently on the market, guaranteeing the most accurate control of the LED light output for both white and RGB LED backlight panels.
A whole chain of AS3693 drivers can be controlled via SPI or IC making the device the top choice for larger LCD panels.
External clock and synchronising inputs allow the easy synchronisation of the LCD backlight with the TV picture.
Built-in safety features include thermal shutdown as well as open and short LED detection.
Markus Luidolt, Marketing Manager for LED backlight drivers at austriamicrosystems, says: "To meet our customers' requirements, austriamicrosystems developed this high performance solution tailored to the specific needs of LCD TVs with LED backlight".
"Easy synchronisation with the TV picture and highest precision to achieve optimal colour and brightness levels are the most important characteristics of our AS369x-product family which is seeing strong interest from leading players in the LCD TV arena".
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