The maximum input voltage that can be applied to the LTC3613 is 42V, but it's recommended to keep it below 36V for reliable operation.
To minimize EMI, keep the input and output capacitors close to the IC, use a solid ground plane, and keep the high-frequency switching nodes (e.g., SW and VIN) away from sensitive analog nodes. Also, use a shielded inductor and orient it to minimize radiation.
The recommended operating frequency range for the LTC3613 is between 200 kHz and 2 MHz. Operating outside this range may affect efficiency, stability, or EMI performance.
Choose an inductor with a high saturation current rating, low DC resistance, and a suitable inductance value (e.g., 1-4.7 μH). Consider the inductor's physical size, core material, and operating frequency when making your selection.
The maximum output current capability of the LTC3613 is 3A, but it's recommended to derate the output current based on the input voltage, output voltage, and ambient temperature to ensure reliable operation.