LYT4213L

AC DC Converters, Offline Switchers Overview

The LYT4213L is an offline switch IC from the LYTSwitch-4x1 family, designed for high-efficiency AC/DC LED lighting drivers. It integrates a 725V power MOSFET and operates in Flyback, Buck, or Buck-Boost topologies. The device supports input voltages of 85 VAC to 265 VAC and delivers up to 18 W output power with a constant current of 2.72 A. Operating at a fixed frequency of 140 kHz, it utilizes an eSIP-7F package for through-hole mounting. The component functions within a temperature range of -40°C to +150°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a high-voltage 725V power MOSFET with control circuitry
• Supports multiple converter topologies including Flyback, Buck, and Buck-Boost
• Provides constant current regulation for LED loads
• Features internal soft-start and thermal shutdown protection

AC DC Converters, Offline Switchers Applications

• High-power LED lighting fixtures
• Offline AC/DC LED driver designs
• General-purpose isolated power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify component authenticity due to obsolete status. Confirm RoHS compliance and lot date codes against manufacturer records. Ensure handling procedures account for moisture sensitivity levels specified in the datasheet. Validate pinout compatibility with existing PCB footprints before integration.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring integrated high-voltage switching and flexible topology support. Suitable for designs needing constant current output up to 18 W. Consider thermal management requirements given the eSIP-7F package constraints. Verify input voltage range matches the target AC line specifications.

AC DC Converters, Offline Switchers Part Context

Part of the LYTSwitch-4x1 series, which combines primary-side regulation with integrated power switches. This family targets cost-sensitive, high-performance LED lighting applications by reducing external component count. The LYT4213L specifically offers higher current capability compared to lower-numbered variants in the same series.

AC DC Converters, Offline Switchers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, direct replacements may require design modifications to accommodate different pinouts or electrical characteristics.