Analog Devices Inc. LT3001 36V 4W Isolated Flyback Converter is designed to sample isolated output voltage directly from the primary-side flyback waveform, eliminating the need for third winding or an opto-isolator for regulation. The output voltage is programmed with a single external resistor. Internal compensation and soft-start further reduce external component count. Boundary mode operation provides a small magnetic solution with excellent load regulation. Low ripple Burst Mode operation maintains high efficiency at light load while minimizing the output voltage ripple. A 1.2A, 65V DMOS power switch is integrated along with all high voltage circuitry and control logic into a 5-lead ThinSOT™ package.