A good PCB layout for the FAN7093-F085 should minimize the loop area of the high-frequency switching nodes, keep the input and output capacitors close to the IC, and use a solid ground plane to reduce EMI. A 4-layer PCB with a dedicated power plane and a separate ground plane is recommended.
Choose input capacitors with low ESR and high ripple current rating to handle the high-frequency switching. Output capacitors should have low ESR and be able to handle the output current. A good starting point is to use 10uF to 22uF ceramic capacitors for both input and output.
The FAN7093-F085 is rated for operation up to 105°C ambient temperature, but it's recommended to derate the output current and input voltage to ensure reliable operation at high temperatures.
To ensure stability, make sure to follow the recommended PCB layout, use the correct input and output capacitors, and add a small ceramic capacitor (e.g., 1nF) between the VIN pin and the GND pin to filter out high-frequency noise.
The recommended input voltage range for the FAN7093-F085 is 4.5V to 18V, but it can operate down to 4V with reduced performance. Operating outside this range may affect efficiency, stability, and reliability.
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FAN7093-F085 Overview
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