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A8439 数据表 (PDF) - Allegro MicroSystems

A8439 Datasheet PDF - Allegro MicroSystems
部件名 A8439
下载  A8439 下载

文件大小   567.21 Kbytes
  14 Pages
制造商  ALLEGRO [Allegro MicroSystems]
网页  http://www.allegromicro.com
标志 ALLEGRO - Allegro MicroSystems
功能描述 Photoflash Capacitor Charger with IGBT Driver and Refresh

A8439 Datasheet (PDF)

Go To PDF Page 下载 数据表
A8439 Datasheet PDF - Allegro MicroSystems

部件名 A8439
下载  A8439 Click to download

文件大小   567.21 Kbytes
  14 Pages
制造商  ALLEGRO [Allegro MicroSystems]
网页  http://www.allegromicro.com
标志 ALLEGRO - Allegro MicroSystems
功能描述 Photoflash Capacitor Charger with IGBT Driver and Refresh

A8439 数据表 (HTML) - Allegro MicroSystems

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A8439 产品详情

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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关于 Allegro MicroSystems


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.

*此信息仅供一般参考,对于因上述信息造成的任何损失或损害,我们概不负责。




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