LC5565LD

Overview

The LC5565LD is a single-stage power factor corrected high efficiency non-isolated buck LED driver manufactured by Sanken Electric. Designed for off-line applications, this integrated circuit combines PFC and constant current regulation functions to drive LED loads directly from AC mains without an isolation transformer. The device utilizes a buck topology to achieve high energy conversion efficiency while maintaining a high power factor, making it suitable for compact lighting solutions where board space and thermal management are critical constraints.

Feature Summary

• Integrates power factor correction and constant current control in a single stage
• Utilizes non-isolated buck topology for efficient direct AC-to-LED driving
• Optimized for high efficiency operation in compact lighting form factors

Applications

• Non-isolated LED street lighting fixtures
• Compact indoor LED downlights
• High-efficiency general illumination drivers

Procurement Notes

Verify the exact part number against official Sanken Electric documentation, as the provided search results reference the LC5555LD model with identical functional descriptions. Ensure the specific suffix matches your design requirements. Confirm availability through authorized distributors or the manufacturer directly, as component status may vary by region and production cycle.

Selection Notes

Select this component for designs requiring a simplified bill of materials that eliminates the need for separate PFC controllers and isolated flyback converters. It is appropriate for applications where electrical isolation between the AC input and LED load is not mandated by safety standards. Evaluate thermal performance carefully due to the non-isolated nature of the buck topology.

Part Context

This component belongs to Sanken Electric's series of single-stage power factor corrected regulators. These devices are engineered to replace traditional two-stage AC-DC conversion architectures. By integrating PFC and DC-DC regulation, the series reduces component count and system complexity, targeting cost-sensitive yet performance-driven lighting markets.

Replacement Considerations

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