Date: 14/12/2009

CCFL backlight inverter controller for 40-inch-and-larger LCD TVs

Microsemi has introduced the LX6503A, a new CCFL backlight inverter controller that offers black-level quality and dynamic contrast performance in 40-inch-and-larger LCD TVs.

Microsemi says, the LX6503A controller integrates all necessary functionality for LCD TV / monitor displays in a single controller that also provides reliable lamp striking, comprehensive brightness control modes and support for 24V inverter topologies in existing backlight applications. The LX6503A controller features tighter lamp current accuracy as compared to competitive solutions.

The LX6503A controller features soft-start capability, fault indication and flexible configuration support for push-pull, full-bridge or half-bridge drive topologies for low-cost large-screen displays. It includes synchronization (SYNC) functionality that improves display quality by synchronizing both the frequency and phase of the lamp current between inverters or to external signals from a variety of sources including DVD and Blu-Ray devices.

The other key features of the LX6503A CCFL backlight inverter controller are,

Integrated PureBLACK mega contrast dimming technology
Support for over-voltage and open-lamp protection
PWM- or analog-based burst dimming
Operating input voltage ranges from 6V to 27V
600mA of source/sink drive and on-chip regulator with under-voltage lockout protection
User-settable burst dimming frequency and fault time
Multiple fault detection capabilities including open-lamp, over-voltage, short-circuit and
over-current protection

"Microsemi has been a pioneer in CCFL backlighting technology for many years," said Tom Kapucija, director of marketing with Microsemi's Analog Mixed Signal Group. "With CCFL backlit TVs projected to remain the dominant display technology for the next four or five years, it is important for Microsemi customers to offer the same dynamic contrast and performance possible with our industry's emerging technologies. PureBLACK technology fulfills that need while improving the energy efficiency of the display."

Operating temperature range: -40°C to +85°C

Package: 16-lead, narrow-body small outline plastic package
Price: Less than $0.60 in OEM quantities
Availability: Now

For more details visit www.microsemi.com