PDF LX1693 Data sheet ( Hoja de datos )

Número de pieza	LX1693
Descripción	High Performance CCFL Controller w/ALS
Fabricantes	Microsemi Corporation
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No Preview Available ! www.DataSheet4U.com TM LX1693 ® High Performance CCFL Controller w/ALS PRODUCTION DATA SHEET DESCRIPTION The LX1693 is a high performance synchronize to an external signal. CCFL controller optimized for wide Digital Dimming duty cycle is input voltage range notebook display controlled by providing either a DC back lighting applications. voltage or a PWM signal to the Its new brightness control BRITE_D pin. The LX1693 can be architecture provides versatile support operated directly from the battery for ambient light sensor (ALS) control without the need of an external 5V of panel brightness. It also supports supply from the system. Intel’s DPST (Display Power Saving The LX1693 power stage includes Technology) that adjusts the direct coupled full bridge high voltage brightness as a function of video drivers for the external N-channel high content. The ALS control architecture side and N-channel low side power is compatible with all Microsemi FETs. visible light sensor products. The LX1693 includes lamp current The controller’s digital dimming and open lamp voltage regulation, mode includes three brightness inputs: fully programmable lamp frequency and ALS_IN for the light sensor, burst dimming frequency oscillators, BRITE_D for brightness and and our patented fool-proof lamp strike BST_SYNC for digital dimming and circuitry. synchronization.. Analog programmable open lamp Burst frequency can be controlled strike time-out, over voltage, and short either by the on chip burst oscillator or circuit fault detection are fully directly by an external logic signal at implemented. BST_SYNC. The on chip burst The LX1693 is available in the 28 pin 4 oscillator can either free run or x5 MLPQ surface mount package. IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com Protected by U.S. Patents: 5,615,093; 5,923,129; 5,930,121; 6,198,234; 7,112,929; Patents Pending PRODUCT HIGHLIGHT KEY FEATURES 7 to 25 Volts Wide Input Voltage Range Versatile Support for Ambient Light Sensor Brightness Control Resistor Programmable Lamp Operating Frequency within ±4% Tolerance Resistor Programmable Burst Operating Frequency Support IntelTM DPST for System PWM input Compatible with Microsemi’s new SMBus CCFL controllers Fully Programmable Open Lamp and Load Fault Time Outs On Chip Full Wave Rectifiers for Lamp Voltage and Current Cost Effective and Low Parts Count Inverter Modules Uses Industry Standard High Voltage Transformers APPLICATIONS Note Book LCD displays Transportable Computers Web Tablet LCD displays Copyright © 2007 Rev 1.0, 8/1/2007 PACKAGE ORDER INFO TA (°C) LQ Plastic MLPQ 4x5mm 28 pin RoHS Compliant / Pb-free -20 to 70 LX1693CLQ Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1693CLQ-TR) Microsemi Analog Mixed Signal Group 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 1 1 page

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