LYT4312E

AC DC Converters, Offline Switchers Overview

The LYT4312E is a high-performance, internally integrated AC/DC offline switcher from the LYTSwitch-4 series. It combines a 725V power MOSFET with control and driver circuits in an eSIP-7C package. Designed for low-power flyback applications, it operates at a switching frequency of 132kHz. The device supports universal input voltages ranging from 85 VAC to 132 VAC. It offers constant current adjustment rates better than +/-5% and includes power factor correction technology suitable for low input voltage applications.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 725V power MOSFET with control and driver circuits
• Supports power factor correction for low input voltage applications
• Provides constant current adjustment rates superior to +/-5%
• Available with options for dimmable and non-dimmable configurations

AC DC Converters, Offline Switchers Applications

• Commercial lighting systems
• Industrial lighting fixtures
• Smart lighting solutions

AC DC Converters, Offline Switchers Procurement Notes

This component is officially listed as End-of-Life by Power Integrations and is no longer manufactured or available for new orders. Verification of current stock status through authorized distributors is essential before design finalization. Due to its discontinued status, alternative sourcing strategies must be evaluated immediately to ensure supply chain continuity for existing production lines.

AC DC Converters, Offline Switchers Selection Notes

Engineers should consider this part only for legacy maintenance or specific retrofit projects where historical compatibility is required. Given its End-of-Life status, selecting a direct replacement from the same manufacturer's current portfolio is strongly recommended for new designs. Verify that the target application strictly matches the 725V breakdown voltage and eSIP-7C package constraints of this specific model.

AC DC Converters, Offline Switchers Part Context

The LYT4312E belongs to the LYTSwitch-4 family of offline switches, which are designed for high-efficiency, low-power AC/DC conversion. This series integrates the power switch and controller to minimize external component count and reduce solution size. The E suffix typically denotes a specific tape-and-reel or packaging variant within the standard product line, though official documentation confirms the core electrical specifications remain consistent across the series.

AC DC Converters, Offline Switchers Replacement Considerations

As the LYT4312E is End-of-Life, no official public substitute part numbers are confirmed in the provided source material. Designers should consult Power Integrations' current LYTSwitch-4 or newer generation datasheets for functional equivalents that match the 725V rating and eSIP-7C footprint.