LT3574 Datasheet - Linear Technology

LT3574 Isolated Flyback Converter

The LT®3574 is a monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation. The part senses the isolated output voltage directly from the primary side flyback waveform. A 0.65A, 60V NPN power switch is integra.

LT3574 Features

* n 3V to 40V Input Voltage Range n 0.65A, 60V Integrated NPN Power Switch n Boundary Mode Operation n No Transformer Third Winding or Opto-Isolator Required for Regulation n Improved Primary-Side Winding Feedback Load Regulation n VOUT Set with Two External Resistors n BIAS Pin for Internal Bias Supp

LT3574_LinearTechnology.pdf