LYT1604D-TL

LED Driver IC Overview

The LYT1604D-TL is an LED lighting driver IC from the LYTSwitch-1 series, designed for single-stage constant current applications. It operates with a buck topology and supports an input voltage range of 90 VAC to 308 VAC. The device delivers an output current of 135 mA at a switching frequency of 20 kHz. It features adjustable output voltage and includes integrated power factor correction (PFC). The component is housed in an 8-SO package and functions within a temperature range of -40°C to +150°C.

LED Driver IC Feature Summary

• Integrates single-stage PFC and constant current regulation for simplified design
• Includes internal high-voltage switched current source
• Provides comprehensive protection against overvoltage, overtemperature, and short circuits

LED Driver IC Applications

• LED bulbs
• Linear LED tubes
• Ballast replacement modules

LED Driver IC Procurement Notes

Verify the specific suffix 'TL' indicates tape and reel packaging when ordering. Confirm the manufacturer part number matches Power Integrations documentation exactly. Ensure compatibility with the required SOIC-8 footprint during PCB layout. Check for any recent product change notices regarding moisture sensitivity or packaging updates before finalizing procurement plans.

LED Driver IC Selection Notes

Select this component for non-isolated AC/DC LED drivers requiring up to 22W. It is suitable for designs needing integrated PFC without external magnetics. Consider the 20 kHz operating frequency for acoustic noise management. Evaluate the 135 mA output current capability against the target LED string requirements. Verify that the 90-308 VAC input range covers the intended market voltage specifications.

LED Driver IC Part Context

This part belongs to the LYTSwitch-1 family, which consolidates controller, power switch, and transformer into a single package. The series targets low-power LED lighting applications where size and cost efficiency are critical. The D suffix typically denotes a specific pinout or thermal variant within the broader LYT1604 lineup.

LED Driver IC Replacement Considerations

The discontinued LYT1604D is the direct predecessor. The LYT1603D-TL offers similar functionality but with different current ratings. Verify pin-to-pin compatibility and electrical parameters before substituting.