The maximum input voltage that the LTC3605AEUF can handle is 36V, but it's recommended to keep it below 34V for reliable operation.
To optimize the inductor selection, consider the inductor's saturation current, DC resistance, and core material. A good starting point is to choose an inductor with a saturation current rating of at least 1.5 times the maximum output current, and a DC resistance of less than 100mΩ.
To minimize noise and EMI, keep the input and output capacitors close to the IC, and use a solid ground plane to reduce noise coupling. Keep the switching node (SW pin) away from sensitive analog nodes, and use a shielded inductor or a common-mode choke to reduce EMI.
The output voltage of the LTC3605AEUF can be adjusted by changing the resistor divider ratio between the FB pin and the output voltage. Use the formula Vout = 0.8V x (R1 + R2) / R2 to calculate the required resistor values.
The thermal derating of the LTC3605AEUF is 1.5°C/W. As the junction temperature increases, the maximum output current decreases. For example, at 85°C, the maximum output current is reduced to 70% of the maximum rating.
