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42VIN Micropower No-Opto Isolated Flyback Converter with 65V/3.6A Switch
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LT8302/LT8302-3
42VIN Micropower No-Opto
Isolated Flyback Converter
with 65V/3.6A Switch
FEATURES DESCRIPTION 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 Regulatio Accurate EN/UVLO Threshold and Hysteresis
n Internal Compensation and Soft-Start
n Temperature Compensation for Output Diode
n Output Short-Circuit Protectio Thermally Enhanced 8-Lead SO Package
n AEC-Q100 Qualified for Automotive Applications 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 …