LYT1402D-TL

LED Driver IC Overview

The LYT1402D-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 (PFC). The device operates at a switching frequency of 20 kHz and supports an input voltage range of 90 VAC to 308 VAC. It delivers up to 8 W of output power through a single channel. The component is housed in a SOIC-8 package and is supplied in reel packaging.

LED Driver IC Feature Summary

• Integrates primary-side regulation for accurate constant current control without optocouplers
• Combines single-stage PFC and buck conversion capabilities
• Includes built-in high-voltage switched current source for self-biasing
• Features cycle-by-cycle current limit and hysteretic thermal shutdown

LED Driver IC Applications

• Low power LED lighting drivers
• Single-stage AC-DC LED converters
• Offline switcher applications requiring compact design

LED Driver IC Procurement Notes

Verify the specific suffix 'TL' indicates tape-and-reel packaging when ordering. Confirm the datasheet version matches the required regulatory compliance standards. Ensure the SOIC-8 footprint aligns with the target PCB layout. Cross-reference the manufacturer part number against official distributor catalogs to avoid counterfeit components.

LED Driver IC Selection Notes

Select this component for designs requiring integrated PFC and constant current regulation in a small form factor. The 20 kHz operating frequency aids in reducing acoustic noise. Consider the 8 W power limit and 90-308 VAC input range during circuit planning. The primary-side regulation simplifies the bill of materials by eliminating secondary feedback circuits.

LED Driver IC Part Context

This part belongs to the LYTSwitch-1 family, which introduces a novel on/off control state machine. These ICs are designed to simplify low-power CC LED drivers by integrating a high-voltage switching MOSFET and control logic into a monolithic chip. The series targets cost-sensitive and space-constrained LED lighting applications.

LED Driver IC Replacement Considerations

The LYT1602D-TL is a documented alternative within the same series offering similar functionality. Verify pin compatibility and electrical specifications before substitution. Check for any differences in thermal performance or maximum output power ratings between the two variants.