0-4 W Designs Delivering Switcher Benefits at Linear Cost
Typical Application


  • Extremely simple circuit configuration
  • Primary based CV/CC solution eliminates 10 to 20 secondary components for low system cost
  • Universal input range allows worldwide operation
  • Up to 70% reduction in power dissipation-reduces enclosure size significantly
  • System level thermal and current limit protection
  • Up to 75% lighter power supply reduces shipping cost
  • Consumes <300 mW at 265 VAC with no load



  • Optimized for linear replacement in CV only designs
  • Lowest cost solution for linear replacement CV/CC chargers with =±25% CC tolerance
  • Recommended for cost sensitive applications in larger systems with existing EMI filtering


  • Optimum choice for CV/CC chargers with =±20% CC tolerance
  • Recommended for charger/adapters where the best CV/CC tolerance is required


  • Optimized for bias winding feedback and EMI reduction
  • Very low cost CV/CC implementation
  • Recommended for both stand-alone charger/adapter applications and larger systems where EMI reduction is required


  • Linear transformer replacement in all = 4 W AC-DC applications
  • Chargers for cell phones, cordless phones, PDAs, digital cameras, MP3/portable audio devices, shavers, etc.
  • Home appliances, white goods and consumer electronics
  • TV standby and other auxiliary supplies
Output Power
PRODUCT230 VAC ±15%85-265 VACNo-load
Input Power
4 W
5.5 W
3 W
3.5 W
4 W
5.5 W
3 W
3.5 W
4 W
5.5 W
3 W
3.5 W
Product Documents
Application Notesan35.pdf AN-35
Package Informationpackageinfo.pdf
Data Sheetslnk500.pdf LNK500lnk501.pdf LNK501lnk520.pdf LNK520
Reference Designs*
DAK-16A5.5 V, 2.75 W AC-DC Universal Input Charger
DAK-545.5 V, 2.75 W AC-DC Universal Input Charger

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

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

EcoSmart® - Energy-Efficiency Technology
  • Green RoomEasily meets all global energy efficiency regulations
  • No-load consumption <50 mW with bias winding and <150 mW without bias winding at 265 VAC input
  • ON/OFF control provides constant efficiency down to very light loads - ideal for CEC regulations and 1 W PC standby requirements