Off Line Switcher 7-Pin PDIP-C

The Link Switch TM-CV dramatically simplifies low power, constant voltage(CV) converter design through a revolutionary control technique which eliminates the need for both an optocoupler and secondary CV control circuitry while providing very tight output voltage regulation. The combination of proprietary IC trimming and E-Shield transformer construction techniques enables Clamp less designs with the Link Switch-CV LNK623.Link Switch-CV provides excellent cross-regulation for multiple-outputfly back applications such as DVDs and STBs. A 725 V power MOSFET and ON/OFF control state machine, self-biasing, frequency jittering, cycle-by-cycle current limit, and hysteretic thermal shutdown circuitryare all incorporated onto one IC.

• Dramatically Simplifies CV Converters
  • Eliminates
• Compensates for external component temperature variations
• Very tight IC parameter tolerances using proprietary trimming technology
• Continuous and/or discontinuous mode operation for design flexibility
• Frequency jittering greatly reduces EMI filter cost
• Auto-restart protection reduces delivered power by >95% for output short-circuit and all control loop faults
• Hysteretic thermal shutdown
• Meets HV creepage requirements between Drain and all other pins, both on the PCB and at the package
• EcoSmart™– Energy Efficient
  • No-load consumption <200 mW at 230 VAC and down to below 70 mW with optional external bias
  • Easily meets all global energy efficiency regulations with no added components
  • ON/OFF control provides constant efficiency down to very light loads
  • No primary or secondary current sense resistors
• Green Package
  • Halogen free and RoHS compliant package