I am building a power supply for my MCU project so I want to turn 12V car battery into 5V. I am looking at Diode's AP1509 step-down converter. It needs minimal external components and has a current rating of 2A at 5V. The reference design has a Schottky diode on the output side. I wonder why. My log…

12V to 5V DC-DC converter reference circuit question

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