Allegro MicroSystems, Inc. Introduces New Wide Input Voltage Range High-Efficiency Fault Tolerant Single String LED Driver

Designed for Automotive and Consumer Backlighting LCD Displays

February 7, 2012

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Worcester, MA – Allegro MicroSystems, Inc. introduces a new single-output white LED (WLED) driver designed for backlighting LCD displays for both automotive and consumer designs and the associated application, performance and protection requirements. Allegro’s A8513 integrates a current-mode boost converter with an internal power switch and one current sink. It is a robust solution for applications such as automotive infotainment, cluster, and center-stack, industrial LCD displays, portable DVD players, flatbed scanners, and LED lighting.

The A8513 can operate from a single power supply from 4.5 to 40 V, to accommodate start/stop, cold crank, and load dump requirements. A 2 MHz boost converter switching frequency allows the A8513 to operate above the AM radio band. If required, the fault flag can be used as part of a circuit to drive an external P-FET to disconnect the input supply from the system in the event of a fault. The device provides protection against output short and overvoltage, open or shorted diode, open or shorted LED pin, shorted boost switch or inductor, shorted ISET resistor, and IC overtemperature. A dual level cycle-by cycle current limit function provides soft start and protects the internal current switch against high current overloads.

Allegro’s A8513 is supplied in both eMSOP-10 and eTSSOP-16 packages. These devices will be offered in various oscillator frequencies – please contact Allegro for further details.



Allegro MicroSystems, LLC は、高性能半導体の開発、製造、マーケティングにおけるリーダーです。Allegro の革新的なソリューションは、自動車などの急成長している分野で広く採用されているほか、オフィス オートメーション、工業、コンシューマー/通信市場でも注目されています。Allegro の本社は米国マサチューセッツ州ウースターにあり、設計、アプリケーション、営業サポートなどの拠点を世界中に展開しています。Allegro の詳細については、www.allegromicro.com をご覧ください。

 


記事に関するお問い合わせ:

Stephanie Fennelly
マーケティング広報担当ディレクター
電話: (508) 854-5363
sfennelly@allegromicro.com
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