Datasheet Analog Devices LT8315 — Datenblatt

LT8315
560VIN Micropower No-Opto
Isolated Flyback Converter
with 630V/300mA Switch
DESCRIPTION FEATURES
Wide Input Voltage Range: 18V to 560V
nn 630V/300mA Integrated Power Switch
nn No Opto-Isolator Required for Regulation
nn Quasi-Resonant Boundary Mode Operation
nn Constant-Current and Constant-Voltage Regulation
nn Low Ripple Light Load Burst Mode® Operation
nn Low Quiescent Current: 70μA
nn Programmable Current Limit and Soft-Start
nn TSSOP Package with High Voltage Spacing The LT®8315 is a high voltage flyback converter with integrated 630V/300mA switch. No opto-isolator is needed for
regulation. The device samples the output voltage from the
isolated flyback waveform appearing across a third winding on the transformer. Quasi-resonant boundary mode
operation improves load regulation, reduces transformer
size and maintains high efficiency. nn APPLICATIONS At start-up, the LT8315 charges its INTVCC capacitor via a
current source attached to the DRAIN pin. During normal
operation, the current source turns off and the device
draws its power from a third winding on the transformer. Isolated Telecom, Automotive, Industrial, Medical
Power Supplies
nn Isolated Off Line Housekeeping Power Supplies …