A good PCB layout for the LTC2954 involves keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing the length of the traces between the IC and the capacitors. A 4-layer PCB with a dedicated ground plane is recommended.
Choose capacitors with low ESR (Equivalent Series Resistance) and high ripple current ratings. X5R or X7R ceramic capacitors are good options. The input capacitor should be at least 10uF, and the output capacitor should be at least 22uF.
The LTC2954 can handle input voltages up to 36V, but it's recommended to keep the input voltage below 30V to ensure reliable operation.
The output voltage of the LTC2954 can be adjusted by changing the ratio of the resistors R1 and R2 in the feedback network. A higher ratio will result in a higher output voltage, and a lower ratio will result in a lower output voltage.
The LTC2954 can deliver up to 1.5A of output current, but it's recommended to keep the output current below 1A to ensure reliable operation and minimize heat generation.
LTC2954CTS8-1#TRMPBF datasheet
by Linear Technology
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