DESCRIPTION
The LT ®1424-9 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
■ Application Circuit Meets PCMCIA Type II Height Requirement
■ Fixed, Application Specific 9V 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
■ Ethernet Isolated 5V to –9V Converter