3.3V Mini Power Supply

3.3V Mini Power Supply
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 3.3V Mini Power Supply

This is a 3.3V / 1A mini power supply circuit. The circuit is based on the LM2575N-3.3 step-down (buck) switching regulator  Requiring a minimum number of external components, this regulator is simple to use and offers a high-efficiency replacement for popular three-terminal linear regulators. The input voltage must be DC in the range of 6-20V. Input voltage polarity is not critical due to the diodes bridge.  


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