LYT7504D-TL

LED Driver IC Overview

The LYT7504D-TL is an AC-DC offline switcher from the LYTSwitch-7 family, designed for single-stage power factor corrected LED drivers. It integrates a high-voltage switching MOSFET and primary-side regulation to eliminate optocouplers. The device supports triac dimming and operates with a step-down (buck) topology. It features a wide input voltage range of 90 VAC to 300 VAC and delivers a regulated output current of 125 mA. The component is housed in an SOIC-8 package and operates at a fixed frequency of 20 kHz.

LED Driver IC Feature Summary

• Integrates primary-side regulation to remove the need for optocouplers and secondary control circuitry.
• Supports single-stage power factor correction combined with constant current LED driving.
• Includes built-in triac dimming capability for compatibility with standard lighting controls.

LED Driver IC Applications

• Single-stage PFC LED driver designs
• Triac-dimmable LED lighting fixtures
• Offline AC-DC buck converter applications

LED Driver IC Procurement Notes

Verify the specific suffix 'TL' indicates tape-and-reel packaging when placing orders. Confirm that the SOIC-8 package variant matches your PCB footprint requirements. Ensure the design accommodates the 20 kHz operating frequency and 125 mA output current limits specified for this part number.

LED Driver IC Selection Notes

Select this component for applications requiring integrated power factor correction and dimming support without secondary feedback loops. It is suitable for designs needing a compact solution with reduced external component count. Consider the 20 kHz switching frequency for EMI management and thermal performance within the SOIC-8 package constraints.

LED Driver IC Part Context

This part belongs to the LYTSwitch-7 series, which targets higher power LED applications compared to lower-numbered series. It combines a high-voltage MOSFET with advanced control logic to simplify driver design. The series emphasizes reliability and efficiency in single-stage topologies for general illumination.

LED Driver IC Replacement Considerations

Check datasheets for other LYTSwitch-7 variants with similar output current ratings. Verify pinout compatibility if substituting with other SOIC-8 LED driver ICs. Ensure replacement parts support the required triac dimming functionality and input voltage range.