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AL1678-20B Datasheet 500V BUCK LED DRIVER

Manufacturer: Diodes Incorporated

Overview: OBSOLETE – PART DISCONTINUED PART OBSOLETE – NO ALTERNATE PART AL1678-20B/10B/08B UNIVERSAL, 500V BUCK LED.

Download the AL1678-20B datasheet PDF. This datasheet also includes the AL1678-08B variant, as both parts are published together in a single manufacturer document.

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General 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.

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.

More Datasheets from Diodes Incorporated

Part Number Description
AL1678-08B 500V BUCK LED DRIVER
AL1678-10B 500V BUCK LED DRIVER
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