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LXM1621-01 Dataheets PDF



Part Number LXM1621-01
Manufacturers Microsemi Corporation
Logo Microsemi Corporation
Description DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE
Datasheet LXM1621-01 DatasheetLXM1621-01 Datasheet (PDF)

P A T E N T S TM P E N D I N G RangeMAX T H E LXM1621-xx D A T A D IGITAL D IMMING D UAL L AMP CCFL I NVERTER M ODULE I N F I N I T E P O W E R O F I N N O VA T I O N P R E L I M I N A R Y S H E E T DESCRIPTION RangeMAX Wide Range Dimming, Dual Output Inverter. The LXM1621 Direct DriveTM CCFL (Cold Cathode Fluorescent Lamp) Inverter Modules are specifically designed for driving LCD backlight lamps. Similar to the LXM1620, the LXM1621 excels in applications where critical paramete.

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P A T E N T S TM P E N D I N G RangeMAX T H E LXM1621-xx D A T A D IGITAL D IMMING D UAL L AMP CCFL I NVERTER M ODULE I N F I N I T E P O W E R O F I N N O VA T I O N P R E L I M I N A R Y S H E E T DESCRIPTION RangeMAX Wide Range Dimming, Dual Output Inverter. The LXM1621 Direct DriveTM CCFL (Cold Cathode Fluorescent Lamp) Inverter Modules are specifically designed for driving LCD backlight lamps. Similar to the LXM1620, the LXM1621 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 LXM1620 or any traditional dimming CCFL inverters, the LXM1621 provides the designer a vastly superior display brightness range. 1000:1+ brightness range is achievable with a standard LCD display (see Product Highlight). 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"). RangeMAX Digital Dimming Technique. Digital dimming provides flicker-free brightness control in any wide-range dimming application. Dimming ratios as great as 1000:1 can be achieved. Incorporation of a video synchronization feature allows wide ratio dimming without the display disturbances and interference seen with competitive 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 RangeMAX Works" Section). Fail-safe 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 replacement is convenient. Direct Drive Technology. The module design is based on a new Direct Drive topology, which provides a number of cost and performance advantages. The LXM1621-xx Direct Drive inverters eliminate the classic resonant inductor and capacitors, thus reducing cost and allowing a substantial reduction in module size. Universal Connector Configuration. Linfinity's multiple lamp inverters include a built in connector array for the most common LCD lamp configurations. Additional Features. Other benefits of this new topology are fixed-frequency operation and secondary-side strike-voltage regulation. Strike-voltage regulation minimizes corona discharge in the output transformer and related circuitry, providing longer life and higher reliability. All LXM1621 modules feature both open and shorted lamp protection. The LXM1621 is fully customizable (electronically and mechanically) to specific customer requirements. I I I I I I K E Y F E AT U R E S RangeMAX Wide Range Dimming 8V To 18V Input Voltage Range Small Form Factor Easy To Use Brightness Control MicroAmp SLEEP Mode Output Short-Circuit Protection And Automatic Strike-Voltage Regulation I Fixed Frequency Operation I Universal Connector Configuration A P P L I C AT I O N S I Hi-Brite Displays I Desktop Displays I Low Ambient Light Conditions (i.e. Aircraft Cabins, Automobile) I Industrial Applications BENEFITS I High Efficiency Reduces Heating Problems I Smooth, Flicker Free 0-100% Full-Range Brightness Control Gives Your Product A High Quality Image I Output Open Circuit Voltage Regulation Minimizes Corona Discharge For Long Life And High Reliability I Power Efficient, "Low Brightness" Capability Allows For Advanced Power Management NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com. M O D U L E O R D E R I N F O R M AT I O N Part Number Lamp Run Voltage Lamp Current LXM1621-01 LXM1621-02 LXM1621-03 500 - 750VRMS 350 - 500VRMS 350 - 500VRMS 7mA 6mA 6.5mA Copyright © 2000 Rev. 0.6 2/00 LINFINITY MICROELECTRONICS INC. 11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570 1 PATENT PENDING PRODUCT DATABOOK 1996/1997 LXM1621-xx D IGITAL D IMMING D UAL L AMP CCFL I NVERTER M ODULE P R E L I M I N A R Y RangeMAX D A T A TM S H E E T (Note 1) A B S O L U T E M A X I M U M R AT I N G S Input Supply Voltage (VIN) ........................................................................................................................................................ -0.3V to 18V Output Voltage, no load .............................................................................................................................. Internally Limited to 1800VRMS Output Current ............................................................................................................................................. 10.0mARMS (Internally Limited) Output Power (per Lamp) ..............................


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