Allegro MicroSystems, Inc. Announces a New LED Backlight Driver for Medium/Large Displays

Ideal for LED Backlit LCD Monitors and Televisions

May 25, 2010

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Worcester, MA – Allegro MicroSystems, Inc. announces a new multi-output WLED/RGB driver for LED backlighting of LCD Monitors and Televisions. This new device integrates a boost controller that operates in constant frequency (programmable) current mode control, driving an external MOSFET. It integrates six internal current-sinks capable of up to 80 mA each, and they can be combined together to achieve even higher currents. PWM dimming allows LED currents to be precisely controlled as a percentage of the maximum setpoint determined by the user.

Furthermore, multiple A8512s can be connected in parallel, with one master controller controlling the boost stage, and up to five slave controllers, which act as LED sinks. This allows up to 36 LED strings to be powered by just one boost converter significantly reduce the number of external components required.

The A8512 operates from a single supply of 8 to 24 V. It provides protection against overvoltage, open or shorted LED string, and overtemperature. A dual level cycle-by-cycle current limit function provides soft start and protects against overloads.

The A8512 is provided in a 28-contact 5 mm × 5 mm QFN package (ET), with an exposed thermal pad for enhanced thermal dissipation. For single-sided PCB manufacturing capability, the device is also available in a 24-pin SOICW package (LB), with internally fused pins for enhanced thermal dissipation. Both packages are lead (Pb) free, with 100% matte tin leadframe plating.



Sobre Allegro

Allegro Microsystems, LLC es una empresa líder en el desarrollo, fabricación y comercialización de semiconductores de alto rendimiento. Las soluciones innovadoras de Allegro son útiles para aplicaciones de alto crecimiento dentro del mercado de la automoción, con enfoque adicional en la automatización de oficinas, industrial y soluciones de comunicaciones/consumo. Allegro tiene su sede en Worcester, Massachusetts (EE.UU.) con centros de diseño, aplicaciones y de soporte de ventas ubicados en todo el mundo. Más información sobre Allegro se puede encontrar en www.allegromicro.com

Allegro Microsystems Europa, con sede en Chertsey, Reino Unido, es la oficina operativa de ventas y comercialización europea, y opera una red de representantes y distribuidores en toda Europa. Allegro cuenta con centros técnicos y de marketing en Heidelberg y Hinterzarten en Alemania. Allegro también dispone de un centro de ingeniería de diseño en el centro de Edimburgo, en Escocia y un centro técnico y de marketing en Annecy en Francia.


Contactos de marketing:

Allegro MicroSystems Europe Ltd.
Tel: +33 (0) 4 50512359
Fax: +33 (0) 4 505 12083 

Email: allegroeurope@allegromicro.com
www.allegromicro.com

 

 

 

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