The recommended PCB layout for the MAX6618AUB+ is to keep the input and output traces as short as possible, and to use a solid ground plane to reduce noise and improve thermal performance. Additionally, it's recommended to place a 10uF capacitor between the VIN and GND pins to filter out noise and ripple.
To ensure proper thermal management, it's recommended to attach the MAX6618AUB+ to a heat sink or a metal pad on the PCB, and to use thermal interface material (TIM) to fill any gaps between the device and the heat sink. The maximum junction temperature (TJ) should not exceed 150°C.
The maximum input voltage that can be applied to the MAX6618AUB+ is 28V, although the recommended operating range is 4.5V to 24V. Applying voltages above 28V can cause damage to the device.
The output voltage of the MAX6618AUB+ can be adjusted by connecting a resistive divider network between the VOUT pin and the GND pin. The output voltage can be calculated using the formula: VOUT = 1.25V x (1 + R1/R2), where R1 and R2 are the resistors in the divider network.
The minimum input capacitance required for the MAX6618AUB+ is 10uF, although a larger capacitance value (e.g. 22uF) is recommended to ensure stable operation and to filter out noise and ripple.
MAX6618AUB+ datasheet
by Maxim Integrated Products
