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STR-S5703

Allegro MicroSystems
Part Number STR-S5703
Manufacturer Allegro MicroSystems
Description OFF-LINE SWITCHING REGULATOR WITH BIPOLAR SWITCHING TRANSISTOR
Published Sep 21, 2005
Detailed Description STR-S5703 OFF-LINE SWITCHING REGULATOR – WITH BIPOLAR SWITCHING TRANSISTOR COLLECTOR 1 COMMON 2 FAULT The STR-S5703 ...
Datasheet PDF File STR-S5703 PDF File

STR-S5703
STR-S5703

Overview
STR-S5703 OFF-LINE SWITCHING REGULATOR – WITH BIPOLAR SWITCHING TRANSISTOR COLLECTOR 1 COMMON 2 FAULT The STR-S5703 is specifically designed to meet the requirement for increased integration and reliability in off-line quasi-resonant flyback converters with indirect feedback.
The device incorporates the primary control and proportional drive circuit with a third-generation high-voltage bipolar switching transistor.
Crucial system parameters such as maximum ON time and OFF time are fixed during manufacture.
Local control circuit decoupling and layout are optimized within each device.
Cycle-by-cycle current limiting, under-voltage lock-out with hysteresis, over-voltage protection, and thermal shutdown protect these devices during all normal and overload conditions.
Over-voltage protection and thermal shutdown are latched after a short delay.
A primary-side error amplifier with reference is included to facilitate regulation from an auxiliary or bias winding of the power transformer.
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