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LT8302

Analog Devices

Micropower No-Opto Isolated Flyback Converter

FEATURES n 3V to 42V Input Voltage Range n 3.6A, 65V Internal DMOS Power Switch n Low Quiescent Current: n 106µA in Slee...


Analog Devices

LT8302

File Download Download LT8302 Datasheet


Description
FEATURES n 3V to 42V Input Voltage Range n 3.6A, 65V Internal DMOS Power Switch n Low Quiescent Current: n 106µA in Sleep Mode n 380µA in Active Mode n Quasi-Resonant Boundary Mode Operation at Heavy Load n Low Ripple Burst Mode® Operation at Light Load n Minimum Load < 0.5% (Typ) of Full Output n No Transformer Third Winding or Opto-Isolator Required for Output Voltage Regulation n Accurate EN/UVLO Threshold and Hysteresis n Internal Compensation and Soft-Start n Temperature Compensation for Output Diode n Output Short-Circuit Protection n Thermally Enhanced 8-Lead SO Package n AEC-Q100 Qualified for Automotive Applications APPLICATIONS n Isolated Automotive, Industrial, Medical Power Supplies n Isolated Auxiliary/Housekeeping Power Supplies LT8302/LT8302-3 42VIN Micropower No-Opto Isolated Flyback Converter with 65V/3.6A Switch DESCRIPTION The LT®8302/LT8302-3 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 an...




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