LNK457KG-TL

LED Driver IC Overview

The LNK457KG-TL is an LED lighting driver IC from the LinkSwitch-PL series, designed for TRIAC dimmable applications. It operates within an input voltage range of 85 VAC to 265 VAC and supports a maximum output power of 8 W. The device features constant current regulation with a single channel capable of delivering up to 1 A output current. It utilizes an SO-8C package and functions at a variable switching frequency between 25.8 kHz and 134 kHz. The component is rated for operation in temperatures ranging from -40°C to +150°C.

LED Driver IC Feature Summary

• Supports TRIAC dimming functionality for LED lighting applications
• Integrates constant current regulation for stable LED drive
• Operates across a wide universal AC input voltage range

LED Driver IC Applications

• TRIAC dimmable LED lamps
• LED downlights
• General solid-state lighting fixtures

LED Driver IC Procurement Notes

This component is officially listed as End-of-Life (EOL) by Power Integrations. Availability is restricted, and distributors may indicate limited stock or discontinuation notifications. Verify current supply status and lead times through authorized channels before design finalization. Consider alternative sourcing strategies due to the discontinued lifecycle status.

LED Driver IC Selection Notes

Select this part for low-power, non-isolated LED drivers requiring TRIAC dimming compatibility. Ensure the application demands an 8 W maximum output and fits within the SO-8C footprint. Validate thermal management capabilities given the high junction temperature rating. Confirm that the specific LNK457 variant meets the required electrical specifications compared to other LinkSwitch-PL models.

LED Driver IC Part Context

The LNK457KG-TL belongs to the LinkSwitch-PL family, which integrates a high-voltage switcher and control logic into a single package. This series targets cost-sensitive, compact LED lighting designs. The 'KG' suffix typically denotes the specific package type and pinout configuration, while 'TL' indicates tape-and-reel packaging. It shares architectural similarities with other LinkSwitch-PL devices but differs in power handling and feature sets.

LED Driver IC Replacement Considerations

Due to the EOL status, direct substitutes should be identified from the same LinkSwitch-PL family or newer PI generations. Verify pin compatibility and electrical parameters against alternatives like the LNK458KG-TL for higher power needs. Consult official replacement guides for cross-reference data.