Microsemi Corp. (Irvine, CA) announced that it has introduced a new line of inverter modules for powering CCFL lamps used in LCD panels for applications ranging from notebook computers to point-of-sale and factory automation displays. Designated the LXM1617/18/23/24 PanelMatch Series, the new design allows the use of a single device in multiple applications, saving design time and reducing parts inventory.
Key to this expanded output matching capability are two pins of the input connector, which allow users to program the maximum output current over a range in binary weighted steps. A choice of 2.2W, 4W or 6W output ratings; input voltages of 3.3V, 5V and 12V; and three output-connector styles simplify system integration.
The new modules are based on Microsemi's LX1689 backlight controller that features a patented direct-drive architecture to extend battery operation in portable applications. The controller's high level of integration eliminates up to 30 module components while providing stable fixed-frequency operation; secondary-side, strike-voltage regulation; open and shorted lamp protection with fault timeout; and an extended temperature rating of -20 to +70 degrees C. PanelMatch modules can be as small as 86mm x 16mm x 4.6mm.
Initial models in the PanelMatch Series include the single-lamp LXM1617 and dual-lamp LXM1623 modules targeted for thin-film transistor panels in notebook, sub-notebook and desktop monitors; portable instrumentation; industrial display controls; high brightness; factory automation; and point-of-sale displays. The LXM1618 single-lamp and LXM1624 dual-lamp modules are targeted at lower-cost super twisted nematic panels or applications requiring little or no dimming.
The LXM1617/18/23/24 PanelMatch modules are available for immediate sampling and delivery with 10,000-piece pricing from $10.83 for a single-lamp inverter and $15.82 for a dual-lamp inverter.
