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AL1678-08B - 500V BUCK LED DRIVER

Description

The AL1678-20B/10B/08B is a universal AC input (85 to 277 VAC), high efficiency and high accuracy Buck LED driver.

Features

  • to enhance the system safety and reliability. It has thermal fold back function, which can reduce the output current when the driver’s temperature is higher than the setting value. The AL1678-20B/10B/08B is available in SO-7 package. Pin Assignments (Top View) OUT 1 VCC 2 ROVP 3 GND 4 SO-7 7 Drain 6 LC 5 CS Features.
  • > 90% Efficiency.
  • Valley Switching to Achieve Low Switching Loss.
  • Universal 85 to 277 VAC Input Range.
  • Internal MOSFET up to 500V.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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OBSOLETE – PART DISCONTINUED PART OBSOLETE – NO ALTERNATE PART AL1678-20B/10B/08B UNIVERSAL, 500V BUCK LED DRIVER Description The AL1678-20B/10B/08B is a universal AC input (85 to 277 VAC), high efficiency and high accuracy Buck LED driver. The AL167820B/10B/08B topology provides accurate constant current over line and load regulation with tight tolerance ±3%, operating at boundary conduction mode (BCM) to ease in EMI/EMC qualification and testing to meet the latest regulatory laws. The AL1678-20B/10B/08B single buck stage system works with a single winding inductor and high voltage MOSFET included, therefore, can use fewer external components and create a low bill of material (BOM) cost solution.
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