LNK457DG

✅ Product Overview

LNK457DG is an offline AC-DC switcher IC manufactured by Power Integrations, part of the LinkSwitch®-PL family. This high-performance device integrates a power MOSFET and controller into a single package, enabling compact, efficient, and cost-effective power supplies. It's especially suitable for dimmable LED lighting applications thanks to its built-in Triac dimming support.

✅ Datasheet

You can download the official datasheet here (to be added): LNK457DG Datasheet

✅ Key Features

• Highly integrated AC-DC converter
• Built-in power switch and control circuitry
• Triac dimming compatible
• High switching frequency (122kHz)
• Thermal shutdown and overcurrent protection
• Compact SO-8C package

✅ Technical Specifications

✅ Application Scenarios

• Dimmable LED lighting fixtures
• Low-power AC-DC converters
• Smart lighting systems
• Offline power supplies requiring compact form factor

🔍 LNK457 Series Product Comparison

🛒 Buy LNK457DG & LNK457 series or Find Alternatives

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✅ FAQ

• Q: Is LNK457DG still in production?
  A: No, it has been discontinued at major distributors like Digi-Key.
• Q: What are the main alternatives to LNK457DG?
  A: You may consider other LinkSwitch® series or devices from the TinySwitch® family, depending on your power and dimming requirements.
• Q: Is it suitable for LED lighting with Triac dimming?
  A: Yes, it's designed to be Triac dimming compatible.
• Q: Can Onzuu source this discontinued part?
  A: Yes. Contact us for stock availability and lead time.

✅ Conclusion

The LNK457DG remains a useful component for legacy designs and compact dimmable LED applications. Even though it is discontinued in mainstream channels, it still plays a role in ongoing repairs or continued production of certain designs. Contact Onzuu to check availability and alternative recommendations.