A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the input and output traces short and away from each other to minimize noise and coupling.
Ensure the input voltage is within the recommended range (2.7V to 5.5V) and the enable pin (EN) is properly biased to either VCC or GND. A 10kΩ pull-up resistor on the EN pin is recommended.
The maximum current rating for the SI3404-TP is 1A. However, it's recommended to derate the current to 0.8A for reliable operation and to prevent overheating.
Use a voltage supervisor or a reset IC to monitor the input voltage and reset the system if it falls outside the recommended range. Add a TVS diode or a zener diode to protect against overvoltage conditions.
The thermal resistance (θJA) of the SI3404-TP package is approximately 120°C/W. Ensure proper heat sinking and thermal management to prevent overheating.
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SI3404-TP Overview
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