LNK417LG

LED Driver IC Overview

The LNK417LG is a LinkSwitch-TN family offline switcher integrating a high-voltage power MOSFET and controller. It operates from an AC input of 85–265 VAC or DC of 100–370 VDC. The device delivers up to 2 W of output power using a flyback topology. Key electrical parameters include a switching frequency of 132 kHz, a drain voltage rating of 700 V, and a peak current limit of 1.9 A. It features fixed internal feedback for simplified design.

LED Driver IC Feature Summary

• Integrates a 700 V power MOSFET with a high-voltage startup circuit and pulse-by-pulse current limiting.
• Utilizes fixed internal feedback architecture to eliminate optocouplers and secondary-side regulation components.
• Incorporates cycle-by-cycle current limiting, over-temperature protection, and open-loop protection.
• Employs frequency jittering to reduce electromagnetic interference (EMI) peaks.

LED Driver IC Applications

• Low-power adapters and chargers
• Standby power supplies
• Small battery chargers

LED Driver IC Procurement Notes

Verify the specific suffix 'LG' against the manufacturer's official datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with required safety certifications for the target application region. Cross-reference the date code and lot traceability requirements with the authorized distributor's documentation prior to ordering.

LED Driver IC Selection Notes

Select this component for designs requiring minimal external parts count and low standby power consumption. It is suitable for applications where cost reduction is critical and isolation requirements are met via transformer design rather than active feedback loops. Evaluate thermal performance based on the 2 W power limit and ambient operating conditions.

LED Driver IC Part Context

This part belongs to the LinkSwitch-TN family from Power Integrations, designed for ultra-low-cost, high-volume consumer electronics. It replaces traditional discrete flyback controllers and MOSFETs in a single DIP-7C package. The series focuses on simplifying assembly and reducing bill-of-materials costs for sub-3 W power supplies.

LED Driver IC Replacement Considerations

No direct pin-to-pin replacements are publicly confirmed for this specific model number. Designers should consult the manufacturer's replacement guide for functional equivalents within the LinkSwitch-TN family or consider redesigning for newer generations if availability is constrained.