LT8302ES8E#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 125°C temperature range
• Operates from an input voltage range of 3V to 42V and delivers up to 18W of isolated output power

Note

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party