Allegro MicroSystems, Inc. Announces New Automotive High Current LED Driver IC Family

Full AEC-Q100 Grade 0 Automotive Qualification

November 28, 2011

Product Image

Worcester, MA — Allegro MicroSystems, Inc. announces the release of a new family of automotive-grade, high-current LED driver ICs with extensive diagnostics and protection features. The A6265A6266 and A6267 are DC-DC converter controllers, with the A6265/A6267 configurable as either boost or buck-boost and the A6266 in boost only. All provide a programmable constant current output for driving high power LEDs in series, ensuring identical currents and uniform brightness. The devices are capable of driving up to 15 LEDs at currents of 1 A or higher based on the external logic-level MOSFET. These devices are targeted for automotive and industrial LED driver applications, in particular exterior front and rear automotive lighting.

The devices provide a robust, high performance, cost-effective solution using an external MOSFET and minimum additional external components. The maximum LED current is set with a single external sense resistor and can be modified using a current reference input. Direct PWM control is possible via the enable input, which also provides a shutdown mode. The dimming schemes for A6265 and A6267 differ slightly, offering flexibility to the designer with a choice of drop-in devices.

Integrated diagnostics and two fault outputs give indication of under voltage, chip over temperature, output open circuit, LED short circuit and LED under current and can be configured to provide short to supply and short to ground protection for the LED connections. The ability to detect one or more shorted LEDs is a unique feature of all the devices.

All three devices (A6265KLPTR-T, A6266KLPTR-T and A6267KLPTR-T) are available in a 16-pin eTSSOP package (suffix LP) with exposed thermal pad.



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
.

Copyright © 2017 Allegro MicroSystems, LLC

サイトマップ  |  個人情報保護に関する方針  |  Web マスターへのお問い合わせ

Follow us on: LinkedIn YouTube Google+ Follow Allegro on Twitter