Date: 04/11/2009

CCFL backlight inverter controller with mega-contrast dimming tech. for LCD TVs

Microsemi has introduced the LX6523A, a new family of Cold Cathode Fluorescent Lamp (CCFL) backlight inverter controller that feature advanced mega-contrast dimming technology, which improves display quality and performance for 26- to 37-inch LCD TVs. The LX6523A drives high-efficiency LED backlight solutions in wide variety applications such as TV, notebook computer, automotive and other display platforms.

The key features of the LX6523A controller are,

High black level and dynamic contrast performance with integrated PureBLACK mega contrast dimming technology, supports over-voltage (OVP) and open-lamp (OLP) protection
Supports push-pull, half-bridge or full-bridge inverter configurations, PWM or analog-based burst dimming, 6V to 27V supply operation and features a 600mA source/sink drive and on-chip regulator with UVLO protection
Configurable and robust operation supported by programmable strike time, strike frequency, user-settable burst dimming frequency and fault time
Multiple fault detection capabilities including open lamp, over voltage, short circuit and over current protection

Microsemi says that it plans to include its advanced mega-dimming capability in future controllers for 40-inch-and-large displays that use the High Voltage LCD Integrated Power Supply (HV-LIPS) topology.

"We've taken another important step in CCFL backlight innovation with PureBLACK technology," said Tom Kapucija, director of marketing at Microsemi's Analog Mixed Signal Group. "It will enable high-end image quality across all display sizes and price points, demonstrating Microsemi's continuing commitment to extending performance/price capabilities while improving the consumer's visual experience," he said.

Operating temperatures range: -40 degrees C to +85 degrees C

Package: 14-lead SOIC package
Price: Less than $0.40 in OEM quantities
Availability: In production release

For more details visit www.microsemi.com

Editorial Product Rating: Average