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A8439 データシート (PDF) - Allegro MicroSystems

A8439 Datasheet PDF - Allegro MicroSystems
部品番号 A8439
ダウンロード  A8439 ダウンロード

ファイルサイズ   567.21 Kbytes
ページ   14 Pages
メーカー  ALLEGRO [Allegro MicroSystems]
ホームページ  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems
部品情報 Photoflash Capacitor Charger with IGBT Driver and Refresh

A8439 Datasheet (PDF)

Go To PDF Page ダウンロード データシート
A8439 Datasheet PDF - Allegro MicroSystems

部品番号 A8439
ダウンロード  A8439 Click to download

ファイルサイズ   567.21 Kbytes
ページ   14 Pages
メーカー  ALLEGRO [Allegro MicroSystems]
ホームページ  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems
部品情報 Photoflash Capacitor Charger with IGBT Driver and Refresh

A8439 データシート (HTML) - Allegro MicroSystems

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A8439 製品詳細

Description
The A8439 is a highly integrated IC that charges photoflash capacitors for digital and film cameras. An integrated MOSFET switch drives the transformer in a flyback topology. It also features an integrated IGBT driver that facilitates the flash discharge function and saves board space.
The CHARGE pin enables the A8439 and starts the charging of the output capacitor. When the designated output voltage is reached, the A8439 stops the charging until the CHARGE pin is toggled again, or when output voltage falls below 90% of the designated value. Pulling the CHARGE pin low stops the charging. The  DONE pin is an open-drain indicator of when the designated output voltage is reached.

Features and Benefits
▪ Power with 1 Li+ or 2 Alkaline/NiMH/NiCAD batteries
▪ Adjustable output voltage
▪ Auto-refresh
▪ >75% efficiency
▪ Eight-level, digitally-programmable current limit
▪ Charge complete indication
▪ Integrated IGBT driver with trigger
▪ No primary-side Schottky diode needed
▪ Low-profile package (0.75 mm nominal height)

Applications include the following:
▪ Digital camera flash
▪ Film camera flash
▪ Cell phone flash
▪ Emergency strobe light




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Allegro MicroSystems について


Allegro MicroSystems is a semiconductor company that designs, manufactures, and markets high-performance power and sensing solutions. The company was founded in 1990 and is headquartered in Manchester, New Hampshire, USA.

Allegro MicroSystems' product portfolio includes Hall-effect sensors, power ICs, motor drivers, and magnetic digital position sensors. These products are used in a wide range of applications, including automotive, industrial, and consumer electronics.

Allegro MicroSystems is known for its expertise in magnetic sensing technology, which is used in many of its products. The company's products are designed to meet the highest standards of performance and reliability, and are manufactured using the latest technology and materials. Allegro MicroSystems also offers custom design and engineering services to meet the specific needs of its customers.

Allegro MicroSystems has a global presence, with sales offices and representatives located around the world. The company is dedicated to delivering innovative and reliable power and sensing solutions that meet the evolving needs of the electronics industry. In 2021, Allegro MicroSystems went public through an initial public offering (IPO) on the NASDAQ stock exchange.

*この情報はあくまでも一般的な情報であり、上記の情報によって生じたいかなる損失や損害についても責任を負うものではありません。




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