LYT1404D-TL

LED Driver IC Overview

The LYT1404D-TL is an LED lighting driver IC from the LYTSwitch-1 series by Power Integrations. It functions as a single-stage constant current buck converter with power factor correction, designed for AC-DC offline applications. The device integrates a high-voltage switch and operates at a fixed frequency of 20 kHz. It supports input voltages ranging from 85 VAC to 308 VAC and delivers up to 22 W of output power. The component is housed in an SOIC-8 package and complies with RoHS standards.

LED Driver IC Feature Summary

• Integrates a high-voltage switch and control logic for single-stage PFC and constant current regulation
• Utilizes a buck topology suitable for compact LED driver designs
• Includes internal soft-start and protection mechanisms for reliable operation

LED Driver IC Applications

• General LED lighting fixtures
• Commercial LED downlights
• Residential LED bulbs

LED Driver IC Procurement Notes

Verify the specific suffix 'TL' indicates reel packaging when sourcing. Confirm that the part number matches the official Power Integrations datasheet specifications. Ensure compatibility with the required thermal management for the SOIC-8 package. Check for any recent product change notifications regarding pinout or electrical parameters before finalizing design integration.

LED Driver IC Selection Notes

Select this component for applications requiring integrated PFC and constant current drive in a small form factor. The 20 kHz operating frequency allows for smaller passive components compared to higher-frequency alternatives. Consider the 22 W power limit and the buck topology constraints when designing the LED string configuration. Ensure the input voltage range aligns with the target market's AC supply standards.

LED Driver IC Part Context

This part belongs to the LYTSwitch-1 family, which targets low-to-medium power LED lighting applications. It combines the primary side regulation capabilities with a built-in high-voltage MOSFET. The series is designed to reduce component count and simplify the design process for single-stage AC-DC converters.

LED Driver IC Replacement Considerations

The discontinued LYT1604D may serve as a functional predecessor, though it was available in tube packaging. Verify if the LYT1604D-TL variant meets the specific electrical requirements of the current design.