AL1677-20BS-13

Overview

The AL1677-20BS-13 is an off-line LED lighting driver IC manufactured by Diodes Incorporated. It operates within a supply voltage range of 85 VAC to 277 VAC and supports Buck, Boost, and Flyback topologies. The device delivers a constant output current with adjustable voltage capabilities up to 650 V. It features a fixed operating frequency of 200 kHz and includes integrated short circuit and thermal protection mechanisms. Packaged in an SO-7 format, it is designed for high-power density applications requiring reliable offline regulation.

Feature Summary

• Supports multiple converter topologies including Buck, Boost, and Flyback configurations
• Integrates short circuit and thermal protection for enhanced system reliability
• Provides constant current output suitable for direct LED string driving

Applications

• High-power general illumination fixtures
• Commercial linear lighting systems
• Industrial LED downlights

Procurement Notes

Verify the specific suffix 'BS' against the manufacturer's latest datasheet to confirm pinout and packaging dimensions. Confirm RoHS compliance status through official documentation before integration. Ensure the SO-7 package variant matches your PCB footprint requirements. Cross-reference the part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component for designs requiring wide input voltage ranges from standard AC mains. The fixed frequency operation simplifies EMI filter design compared to variable frequency alternatives. Consider the thermal management requirements associated with the SO-7 package when determining board layout. Verify that the target application does not exceed the maximum output voltage rating of 650 V.

Part Context

This part belongs to the AL167x series of off-line LED drivers from Diodes Incorporated. It shares functional similarities with the AL1676 but differs in specific electrical ratings and package options. The series targets high-efficiency lighting applications where compact size and robust protection features are critical for meeting regulatory standards.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.