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A8508 データシート (PDF) - Allegro MicroSystems

A8508 Datasheet PDF - Allegro MicroSystems
部品番号 A8508
ダウンロード  A8508 ダウンロード

ファイルサイズ   1166.87 Kbytes
ページ   28 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 Wide Input Voltage Range, High Efficiency

A8508 Datasheet (PDF)

Go To PDF Page ダウンロード データシート
A8508 Datasheet PDF - Allegro MicroSystems

部品番号 A8508
ダウンロード  A8508 Click to download

ファイルサイズ   1166.87 Kbytes
ページ   28 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 Wide Input Voltage Range, High Efficiency

A8508 データシート (HTML) - Allegro MicroSystems

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A8508 製品詳細

Description
The A8508 is a multi-output white LED driver for backlighting LCD panels. It integrates a current-mode boost controller and eight individual current sinks.
The boost controller architecture allows for significant scaling of boost voltage to optimize the solution for the required number of LEDs per string. The FSET/SYNC pin either sets the required boost switching frequency or synchronizes the value in the range of 300 to 800 kHz.
The LED sink current value is set by an external ISET resistor (see figure 1). The eight LED sinks can also be combined to achieve even higher current per LED string.

Features and Benefits
• Eight integrated high current sinks for LED strings; can be
   tied together for even higher currents
• Fixed frequency current mode control with integrated gate
   driver / boost controller; powerful gate driver to drive an
   external N-channel MOSFET allows significant scaling
   capability on the number of LEDs per string
• Parallel operation capability with one boost controller
   (master) and up to three additional slave controllers; can
   run up to 32 strings of LEDs while populating only a
   single master boost regulator
• Active current sharing between LED strings for 0.7%
   accuracy and 0.8% matching
• Wide input voltage range: 9 to 40 V
• Internal bias supply for single-supply operation (typically
   VIN = 12 or 24 V)
• Fset / Sync function to either set the boost converter
   switching frequency or synchronize at up to 800 kHz
• Protection Features
   ▫ Open or shorted LED pin protection
   ▫ Open Schottky protection
   ▫ Pulse-by-pulse current limit
   ▫ Overtemperature protection (OTP)




同様の部品番号 - A8508

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同様の説明 - A8508

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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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