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Data Sheet 28102.9*
STR-G6653
GROUND 3
SUPPLY 4
OSC.
FDBK LATCH
VIN OCP
UVLO OVP TSD
5
OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATOR
The STR-G6653 is specifically designed to satisfy the requirements for increased integration and reliability in off-line quasi-resonant flyback converters. This device incorporates the primary control and drive circuit with a discrete avalanche-rated power MOSFET.
Cycle-by-cycle current limiting, under-voltage lockout with hysteresis, over-voltage protection, and thermal shutdown protects the power supply during the normal overload and fault conditions. Over-voltage protection and thermal shutdown are latched after a short delay. The latch may be reset by cycling the input supply.