Allegro MicroSystems, Inc. Announces New General Purpose Bipolar Switch

Offered in Multiple Packages with Improved Switching Repeatability

April 19, 2012

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Worcester, MA – Allegro MicroSystems announces the release of a new bipolar switch designed with a high speed chopping circuit to null out offsets and dramatically improve switching repeatability. Allegro’s A1250 is an extremely temperature-stable and stress-resistant Hall-effect, bipolar switch. This device is especially suited for operation over extended temperature ranges to +150°C. Superior high temperature performance is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally resulting from device overmolding, temperature dependencies, and thermal stress. This new device is targeted at the automotive, industrial and consumer markets.

The A1250 design includes on a single silicon chip a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a short-circuit-protected, open-collector output. A south pole of sufficient strength will turn the output on. A north pole is necessary to turn the output off.

An on-board regulator permits operation with supply voltages of 3.0 to 24 V. The advantage of operating at 3.0 V is that it can be used in 3 V applications or additional external resistance can be added in series with the supply pin for greater protection in applications that can supply higher voltages.

Two package styles provide a magnetically optimized package for most applications. Package type LH is a modified SOT-23W surface mount package, while the UA package is a three-lead, ultra-mini-SIP for through-hole mounting. Each package type is only available as lead (Pb) free (suffix, -T), with a 100% matte tin plated lead frame.



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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