Transcription of LT8301 (Rev. B) - Analog Devices
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LT8301 (Rev. B) - Analog Devices
LT83011 Rev. BFor more information FeedbackTYPICAL APPLICATION FEATURESDESCRIPTION42 VIN Micropower No-Opto Isolated Flyback Converter with 65 SwitchThe LT 8301 is a micropower isolated flyback converter. By sampling the isolated output voltage directly from the primary-side flyback waveform, the part requires no third winding or opto-isolator for regulation. The output voltage is programmed with a single external resistor. Internal compensation and soft-start further reduce external com-ponent 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 , 65V DMOS power switch is integrated along with all high voltage circuitry and control logic into a 5-lead ThinSOT LT8301 operates from an input voltage range of to 42V and can deliver up to 6W of isolated output power.
Connect a resistor from this pin to the transformer primary SW pin. The ratio of the RFB resistor to an internal 10k resistor, times a trimmed 1.0V reference voltage, deter-mines the output voltage (plus the effect of any non-unity transformer turns ratio). Minimize trace area at this pin. SW (Pin 4) Drain of the : 65V Internal DMOS Power Switch.
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