LT8302HS8E#PBF

LT8302 is a monolithic 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 two external resistors and a third optional temperature compensation resistor. 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 3.6A, 65V DMOS power switch is integrated along with all the high voltage circuitry and control logic into a thermally enhanced 8-lead SO package. The high level of integration and the use of boundary and low ripple burst modes result in a simple to use, low component count, and high efficiency application solution for isolated power delivery. Applications include industrial, medical power supplies, isolated auxiliary/housekeeping power supplies.

• 3.6A, 65V internal DMOS power switch
• Low quiescent current, 106µA in sleep mode, 380µA in active mode
• Quasi-resonant boundary mode operation at heavy load
• Low ripple Burst Mode® operation at light load
• Minimum load of <lt/> 0.5% (typ) of full output
• No transformer third winding or opto-isolator, required for output voltage regulation
• Accurate EN/UVLO threshold and hysteresis, internal compensation and soft-start
• Temperature compensation for output diode, output short-circuit protection
• 8-lead plastic SO package, -40°C to 150°C temperature range
• Operates from an input voltage range of 3V to 42V and delivers up to 18W of isolated output power

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