A good PCB layout for the MAX1745EUB+T involves keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing the length of the traces connecting the IC to the capacitors and resistors. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
To ensure the stability of the output voltage, it is essential to choose the correct output capacitor value and type. A minimum capacitance of 10uF with an ESR of 1ohm or less is recommended. Additionally, the output capacitor should be placed close to the IC, and the feedback resistors should be chosen to ensure a stable feedback loop.
The MAX1745EUB+T can handle a maximum input voltage of 28V. However, it is recommended to operate the IC within the specified input voltage range of 4.5V to 24V for optimal performance and reliability.
The MAX1745EUB+T has built-in overcurrent protection and thermal shutdown features. However, it is still essential to add external protection components such as fuses or PTC resistors to prevent overcurrent conditions. Additionally, ensuring good airflow and a low thermal resistance PCB design can help prevent overheating.
The MAX1745EUB+T is rated for operation up to 125°C. However, the IC's performance and reliability may degrade at high temperatures. It is recommended to derate the IC's performance and ensure good airflow and heat sinking to prevent overheating.
MAX1745EUB+T datasheet
by Maxim Integrated Products
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