LinkSwitch-TN

Replaces Linear, Resistive / Capacitive Droppers in Home Appliance and Industrial Applications
linkSwitch-tn.gif
Typical Buck Converter Application

Description:

  • Lowest cost and component count buck converter solution
  • Tight tolerances and negligible temperature variation
  • System level thermal overload, output short-circuit and open loop protection
  • Supports buck, buck-boost and flyback topologies
  • Excellent line and load regulation even with typical configuration
  • High bandwidth provides fast turn-on with no overshoot
  • Current limit operation rejects line ripple
  • Universal input voltage range (85 VAC to 265 VAC)
  • Built-in current limit and hysteretic thermal protection
  • Higher efficiency than passive solutions
  • Higher power factor than capacitor-fed solutions
  • Enables a 100% SMD designed power supply

Applications:

  • Non-isolated buck or buck-boost converter solution for linear/passive dropper replacement
  • Major and small home appliances
  • Industrial controls
  • Utility meters
  • Constant current LED lighting
  • Timers
Output Current (mA)
PRODUCT1230 VAC ±15%85-265 VAC
MDCM2CCM3MDCM2CCM3
LNK302D
LNK302P/G
63806380
LNK304D
LNK304P/G
120170120170
LNK305D
LNK305P/G
175280175280
LNK306D
LNK306P/G
225360225360

Notes:

  1. Packages: D: SO-8C, P: DIP-8, G: SMD-8.
  2. MDCM - Mostly Discontinuous Conduction Mode
  3. CCM - Continuous Conduction Mode

Product Documents
Application Notesan37.pdf AN-37
Package Informationpackageinfo.pdf
Data Sheetslnk302_304-306.pdf LNK302/304-306

Reference Designs*
RDK-131LED GU10 lamp bulb retrofit using 3 W Non-Isolated Constant Current LED Driver

*DAKs/RDKs include a working power supply, sample devices, unpopulated pcb, data sheet, comprehensive engineering report, PI Expert design software and other related documentation.

New Design Examples
DER-386 9 W High Efficiency (90%) Power Factor Corrected Non-Isolated LED Driver for A19 Lamp Replacement

Visit the Design Examples page for additional circuits using this product family.

EcoSmart® - Energy-Efficiency Technology
  • Consumes typically only 50/80 mW in self-powered buck topology at 115/230 VAC input with no load (opto feedback)
  • Green RoomConsumes typically only 7/12 mW in flyback topology with external bias at 115/230 VAC input with no load
  • Meets Blue Angel, Energy Star and EU requirements