DESCRIPTION
The LT ®1424-5 is a monolithic high power switching regulator specifically designed for the isolated flyback topology. No “third winding” or optoisolator is required; the integrated circuit senses the isolated output voltage directly from the primary side flyback waveform. A high current, high efficiency switch is included on the die along with all oscillator, control and protection circuitry.

FEATURES
■ No Transformer “Third Winding” or Optoisolator Required
■ Designed for Use with 1:1 Ratio Transformers
■ Fixed, Application Specific 5V Output Voltage
■ Regulation Maintained Well into Discontinuous Mode (Light Load)
■ Load Compensation Provides Excellent Load Regulation
■ Available in 8-Pin PDIP and SO Packages
■ Operating Frequency: 285kHz

APPLICATIONS
■ Isolated Communication Supplies
■ Industrial Automation
■ Instrumentation Systems