The recommended PCB layout for the MAX1481CUB+T involves keeping the input and output traces as short as possible, using a solid ground plane, and placing the device close to the power supply. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane to minimize noise and EMI.
The values of R1 and R2 depend on the desired output voltage and the input voltage. A good starting point is to use the equations provided in the datasheet to calculate the values. For example, for a 5V output voltage and a 12V input voltage, R1 = 1.2kΩ and R2 = 2.4kΩ. However, it's recommended to adjust these values based on the specific application requirements and to ensure that the output voltage is within the desired tolerance.
The maximum input voltage that the MAX1481CUB+T can handle is 28V. However, it's recommended to operate the device within the recommended input voltage range of 7V to 24V to ensure optimal performance and reliability.
To ensure stability, it's recommended to follow the layout guidelines provided in the datasheet, use a sufficient output capacitor (at least 10uF), and ensure that the input voltage is within the recommended range. Additionally, it's recommended to add a small capacitor (around 10nF) between the VIN pin and the GND pin to filter out high-frequency noise.
The maximum output current that the MAX1481CUB+T can provide is 1A. However, it's recommended to derate the output current based on the ambient temperature and the input voltage to ensure reliable operation.
MAX1481CUB+T datasheet
by Maxim Integrated Products
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