LNK625DG Datasheet PDF - Power Integrations

●The LNK625DG is an energy-efficient Off-Line Switcher IC with accurate primary-side constant-voltage control. It is dramatically simplifies low power, constant voltage 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. LinkSwitch-CV provides excellent cross-regulation for multiple-output flyback applications. A 700V power MOSFET and ON/OFF control state machine, self-biasing and frequency jittering, cycle-by-cycle current limit and hysteretic thermal shutdown circuitry are all incorporated onto one IC.

● Compensates for external component temperature variations

● Very tight IC parameter tolerances using proprietary trimming technology

● Continuous and/or discontinuous mode operation for design flexibility

● Hysteretic thermal shutdown - Automatic recovery reduces power supply returns from the field

● No primary or secondary current sense resistors - maximizes efficiency