LYT5218D-TL

AC DC Converters, Offline Switchers Overview

The LYT5218D-TL is an LED lighting driver IC from the LYTSwitch-5 family, designed for non-dimmable PFC constant current applications. It supports Boost, Buck, and Flyback topologies with a maximum output power of 25 W. The device operates at a switching frequency up to 132.7 kHz and accepts an input voltage range of 115 VAC to 230 VAC. It features an internal switch rated for 650V breakdown and delivers a maximum output current of 6.3 A. The component is housed in a 16-SO B (SO-16B-14) surface-mount package and functions within a junction temperature range of -40°C to +150°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates primary-side regulation for simplified design without optocouplers or secondary feedback loops.
• Supports multiple converter topologies including Boost, Buck, and Flyback for flexible LED driver architectures.
• Includes built-in Power Factor Correction (PFC) capabilities for efficient energy utilization.
• Features integrated high-voltage startup circuitry and internal power MOSFET.

AC DC Converters, Offline Switchers Applications

• Non-dimmable LED lighting fixtures
• LED street lighting drivers
• Commercial indoor LED luminaires
• General-purpose AC-DC LED power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'TL' indicates tape-and-reel packaging when ordering. Confirm the manufacturer's current status as the part may be discontinued or subject to supply limitations. Ensure compatibility with the required output current and topology before procurement. Check for recent Product Change Notifications regarding packaging or material updates.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring integrated PFC and primary-side regulation in single-output LED applications. Ensure the thermal management solution supports the specified operating temperature range. Verify that the load requirements do not exceed the 25 W power limit or 6.3 A current capability. Consider the 16-SO B package dimensions for PCB layout constraints.

AC DC Converters, Offline Switchers Part Context

This IC belongs to the LYTSwitch-5 family, which combines controller, power switch, and protection features into a single package. It is designed to reduce component count and improve reliability in offline LED driver applications. The family emphasizes ease of design using PI Expert software tools.

AC DC Converters, Offline Switchers Replacement Considerations

Check for direct pin-compatible substitutes within the same LYTSwitch-5 family with adjusted power ratings. Verify if newer generation devices offer improved efficiency or thermal performance while maintaining the same footprint and functionality.