A good PCB layout for the MAX1796EUA+ 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 output voltage.
The MAX1796EUA+ 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 output voltage of the MAX1796EUA+ can be programmed using the feedback resistors R1 and R2. The output voltage is determined by the ratio of R1 to R2, and the internal reference voltage of 0.8V. The output voltage can be calculated using the formula: Vout = 0.8V x (1 + R2/R1).
The MAX1796EUA+ can deliver a maximum output current of 2A. However, the output current should be derated based on the input voltage, output voltage, and ambient temperature to ensure reliable operation.
MAX1796EUA+ datasheet
by Maxim Integrated Products
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