Allegro MicroSystems, Inc. Announces New Automotive Infotainment LED Driver ICs

Robust Solutions for Backlighting Automotive LED Displays

July 20, 2011

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Worcester, MA – Allegro MicroSystems, Inc. announces two new multi-output LED drivers for LCD backlighting. The A8502 and A8514 integrate a current-mode boost converter with internal power switch and multiple current sinks. The LED sinks can be paralleled to-gether to achieve even higher LED currents. They are capable of operating from a single power supply from 5 V to 40 V which allows the part to withstand a load dump condition encountered in automotive systems.

Both the A8502 and A8514 LED drivers can optionally drive an external PMOS to disconnect input supply from the system in the event of a fault. The devices, coupled with the external PMOS disconnect switch, provides protection against output short and overvoltage, open or shorted diode, open or shorted VLED pin, and over-temperature.

A dual level cycle-by-cycle current limit function provides soft start and protects the internal current switch against high current overloads. They have a high PWM switching frequency (>2 MHz) which allows the devices to operate above the AM radio band. They also have a synchronization pin if the user wishes to be synch in the range of 600 kHz to 2.25 MHz.

The A8502KLPTR-T is offered in the 16-pin SSOP package and the A8514KLPTR-T is offered in the 20-pin SSOP package both with exposed thermal pad. Both devices have a 16-week typical lead-time (ARO) to market.



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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