The external biasing of 2.2V at the output could be forward biasing internal circuitry, causing the IC not to work properly. It is not recommended to have an external bias at the output of the MAX8815A…
The low efficiency issue that is sometimes seen on the output of the MAX8815A is often caused by an incorrect output capacitor. One 22µF, 70mΩ tantalum capacitor is recommended on the output of the MAX8815A…
The datasheet graphs on page 6 INPUT CURRENT vs INPUT VOLTAGE are for two Vouts 3.3V and 5V respectively. We can notice that input current increases when the input voltage is very near to output voltage…
