LXM1641-01 Datasheet | Microsemi

Range MAX LXM1641-01/-02/-03 D IGITAL D IMMING Q UAD L AMP CCFL I NVERTER M ODULE N F I N I T E N N O VA T I O N R E L I M I N A R Y DESCRIPTION Range MAX Wide Range Dimming, Quad Output Inverter. The LXM1641 Direct Drive TM CCFL (Cold Cathode Fluorescent Lamp) Inverter Modules are specifically designed for driving LCD backlight lamps. Similar to the LXM1640, the LXM1641 excels in applications where critical parameters include very wide range dimmability, high efficiency and reliable fail-safe design in a small form factor. These 12 volt input modules are specifically designed with desktop and industrial applications in mind. Unlike the LXM1640 or any traditional dimming CCFL inverters, the LXM1641 provides the designer a vastly superior display brightness range. 1000:1+ brightness range is achievable with a standard LCD display (see Application Section). Our wide range dimming provides exceptional display readability at less than 1% of full brightness, allowing both power savings and low ambient light operating capability (i.e. "night readable"). Range MAX Digital Dimming Technique. Digital dimming provides flicker-free brightness control in any wide-range dimming application. Dimming ratios greater than 1000:1 can be achieved. Incorporation of a video synchronization feature allows wide ratio dimming without the display disturbances and interference seen with petitive products. The modules are equipped with a dimming input that permits brightness control from an external potentiometer or DC voltage source. The resultant "burst drive" that energizes the lamp was designed specifically to ensure that no premature lamp degradation occurs (see "How Range MAX Works" Section). Failsafe Feature For Multiple Lamp Applications. Our multi-output inverters are designed to keep your application operating at near normal brightness in the event that a lamp fails. This allows the display to remain "on-line" until lamp...