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A8437 Datasheet (PDF) - Allegro MicroSystems

A8437 Datasheet PDF - Allegro MicroSystems
Part # A8437
Download  A8437 Download

File Size   635.9 Kbytes
Page   21 Pages
Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems
Description Mobile Phone Xenon Photoflash Capacitor Charger

A8437 Datasheet (PDF)

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A8437 Datasheet PDF - Allegro MicroSystems

Part # A8437
Download  A8437 Click to download

File Size   635.9 Kbytes
Page   21 Pages
Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems
Description Mobile Phone Xenon Photoflash Capacitor Charger

A8437 Datasheet (HTML) - Allegro MicroSystems

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A8437 Product details

Description
The Allegro®A8437 Xenon photoflash charger IC is designed to meet the needs of ultra-low power, small form factor cameras, particularly camera-phones.
The charge current time is adjustable by setting the charge current limit from 0.4 to 1.2 A maximum. By using primaryside voltage sensing, the need for a secondary-side resistive voltage divider is eliminated. This has the additional benefit of reducing leakage currents on the secondary side of the transformer. To extend battery life, the A8437 features very low supply current draw—typically 0.1 μA in shutdown mode and 10 μA in standby mode.

Features and Benefits
▪ Low quiescent current draw (0.1 μA in shutdown mode)
▪ Primary-side output voltage sensing; no resistor divider
   required
▪ User-adjustable current limit from 0.4 to 1.2 A
▪ 1.1 V logic (VHI(min)) compatibility
▪ Integrated IGBT driver with separate sink and source (CG
   package) or common sink/source (EJ package)
▪ Flash dual trigger with interlock for increased noise
   immunity
▪ Optimized for mobile phone, 1-cell Li+ battery applications
▪ No primary-side Schottky diode needed
▪ Zero-voltage switching for lower loss
▪ >75% efficiency
▪ Optional regulation feature to maintain the output voltage
▪ Charge complete indication
▪ Integrated 40 V DMOS switch




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About 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.

*This information is for general informational purposes only, we will not be liable for any loss or damage caused by the above information.




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