Microsemi Introduces Next Generation LED Chipset Solution for LED Backlit TV Displays

Microsemi Corporation, a manufacturer of analog/mixed signal integrated circuits and semiconductors, just extended its comprehensive line of backlight-driving IC solutions with the production release of the company's LX24132 32-port LED backlight controller and LX23108L 8-port LED driver.

The chipset provides a scalable, integrated solution for direct or edge-lit backlight applications in flat-panel LCD TV displays, and supports White LED or RGB LED implementations, according to the company. The products are designed for applications in LCD TV, notebook computers, automotive and other display platforms and applications. The chipset can easily be integrated with Microsemi's complementary light-sensor and color-management system solutions to deliver additional quality and functionality.

"Customers have been using Microsemi's proven CCFL solutions for many years in a variety of mainstream applications, and now they can take advantage of Microsemi second-generation LED driving technology for the most energy-efficient designs possible," said Tom Kapucija, director of marketing at Microsemi's Analog Mixed Signal Group. "Microsemi is committed to supporting its customers during their implementation of this new and efficient green LCD TV display technology."

KEY LX24132 and LX23108L FEATURES AND BENEFITS:
White LED or RGB backlight support for large TV display panels
Up to 32 LED strings with +/-1.5% precision current matching
100mA LED current drivers at 100 percent duty cycle and up to
200mA at 50 percent duty cycle
Wide dimming ratio with PWM and LED current amplitude control
12-bit PWM duty-cycle resolution and 8-bit resolution for LED
current setting
LED power supply voltage control
SPI communication interface
Integrated open-string, short-LED and over-temperature protection
for each individual channel with on-chip thermal monitoring
Synchronization to external input pulse (Sync-In) and scan
capability with enable/disable for PWM outputs

Pricing and Availability
Production samples of the ROHS-compliant LX24132 and LX23108L chipset are available now with high-volume shipments starting in the third calendar quarter of 2009. High-volume OEM chipset quantities are priced at less than 8 cents per port depending on the configuration.

Product Demonstration
The backlight controller/driver chipset as well as the color management solution is being demonstrated at the 2009 International Society for Information Display (SID) Exhibition in San Antonio, TX.

About Microsemi
Microsemi Corporation, with corporate headquarters in Irvine, California, is a designer, manufacturer and marketer of high performance analog and mixed-signal integrated circuits and high reliability semiconductors. The company's semiconductors manage and control or regulate power, protect against transient voltage spikes and transmit, receive and amplify signals.

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