The switching frequency of the MAX17222 could be lower than 20kHz at light load. In this case, the ceramic capacitor could produce hearable noise because of the piezoelectric effect. If the frequency of…
The inductor peak current is defined based off the part number (250mA, 500mA, 1000mA) and is limited at the switching node. If the output was grounded then you can expect the current to never go above…
The EN pin of the MAX17222 is connected to both IN and OUT via internal resistors. A 30Mohm resistor is connected between IN and EN externally to enable the MAX17222 during start-up. But after start-up…
