Transcription of Application Note: SY8089A1
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Application Note: SY8089A1
Application Note: SY8089A1 . High Efficiency, , 2A. Synchronous Step Down Regulator Advanced Design Specification `. General Description Features SY8089A1 is a high efficiency synchronous to Input Voltage Range step down DC/DC regulator capable of delivering up to 50 A Low Quiescent current 2A output current . It can operate over a wide input Low RDS(ON) for Internal Switches (Top/Bottom). voltage range from to and integrate main 130m /85m . switch and synchronous switch with very low RDS(ON) High Switching Frequency Minimizes to minimize the conduction loss. the External Components The low output voltage ripple, the small external Internal Soft-start Limits the Inrush current inductor and the capacitor sizes are achieved with 100% Dropout Operation switching frequency.
Current Sense Soft Start IN LX GND Thermal Detect EN FB 0.6V I nter al Power Input UVLO 1.2V. Figure3. Block Diagram ... output inductor L and feedback resistors (R. H. and R. L ... There are several considerations in choosing this inductor. 1) Choose the inductance to provide the desired ripple current. ...
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