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AL1678-10B - 500V BUCK LED DRIVER

Download the AL1678-10B datasheet PDF. This datasheet also covers the AL1678-08B variant, as both devices belong to the same 500v buck led driver family and are provided as variant models within a single manufacturer datasheet.

General Description

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

Key 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.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (AL1678-08B-Diodes.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Diodes Incorporated

Part Number Description
AL1678-08B 500V BUCK LED DRIVER
AL1678-20B 500V BUCK LED DRIVER
AL1672 SINGLE STAGE DIMMABLE BUCK CONVERTER
AL1673 UNIVERSAL FLYBACK AND BUCK-BOOST SINGLE STAGE DIMMABLE LED DRIVER
AL1676 UNIVERSAL HIGH POWER FACTOR BUCK LED DRIVER

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.

View original datasheet text
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.