LYT1402D

LED Driver IC Overview

The LYT1402D is a single-stage LED driver IC from the LYTSwitch-1 series, designed for non-isolated AC/DC applications. It integrates an 800V power switch and controller to support buck, boost, and SEPIC topologies. The device operates at a switching frequency of 20 kHz to minimize audible noise. It provides constant current regulation with integrated PFC capabilities. The component is housed in an SO-8C package and supports input voltages ranging from 90 VAC to 300 VAC.

LED Driver IC Feature Summary

• Integrates primary-side control and high-voltage power switch for simplified design
• Supports non-isolated buck, boost, and SEPIC converter topologies
• Features low-frequency operation to eliminate audible noise
• Includes built-in protection mechanisms for thermal and electrical safety

LED Driver IC Applications

• Non-isolated LED lighting drivers
• General-purpose AC/DC power supplies
• Compact LED lamp designs

LED Driver IC Procurement Notes

Verify the specific suffix (e.g., TL) against the manufacturer's datasheet to confirm packaging type and moisture sensitivity level. Ensure the ordering part number matches the required tape-and-reel or tube configuration. Cross-reference the exact part code with official Power Integrations documentation to avoid substitution errors during procurement.

LED Driver IC Selection Notes

Select this component for designs requiring a single-stage solution without galvanic isolation. It is suitable for applications where audible noise must be minimized due to its low switching frequency. Verify that the target output voltage and current requirements align with the non-isolated topology constraints supported by the internal switch ratings.

LED Driver IC Part Context

This IC belongs to the LYTSwitch-1 family, which targets low-power offline LED drivers. Unlike higher-numbered series, it utilizes a single-stage architecture combining PFC and regulation. It serves as a cost-effective alternative to multi-component discrete solutions for standard LED lighting fixtures.

LED Driver IC Replacement Considerations

The LYT1402D-TL is the tape-and-reel variant of the LYT1402D. Other members of the LYTSwitch-1 series may offer different power levels but share similar integration features.