The recommended PCB layout for the MAX798ESE+ is to use a 4-layer board with a solid ground plane, and to keep the analog and digital grounds separate. Additionally, it's recommended to use a low-ESR capacitor for the input bypass capacitor and to place it as close as possible to the VIN pin.
To optimize the performance of the MAX798ESE+ in a noisy environment, it's recommended to use a ferrite bead or a common-mode choke on the input power line, and to add a capacitor in parallel with the input bypass capacitor to filter out high-frequency noise. Additionally, it's recommended to use a shielded cable for the input power line and to keep the MAX798ESE+ away from noise sources such as motors or relays.
The maximum input voltage that the MAX798ESE+ can handle is 28V, but it's recommended to operate the device within the recommended input voltage range of 4.5V to 24V to ensure reliable operation and to prevent damage to the device.
To troubleshoot issues with the MAX798ESE+, it's recommended to check the input voltage and current, the output voltage and current, and the device's thermal performance. Additionally, it's recommended to check the PCB layout and the component values to ensure that they meet the recommended specifications. If the issue persists, it's recommended to contact Maxim Integrated Products' technical support for further assistance.
The MAX798ESE+ is rated for operation up to 125°C, but it's recommended to derate the device's performance at high temperatures. Additionally, it's recommended to ensure that the device is properly heatsinked and that the PCB is designed to handle high temperatures. It's also recommended to consult the device's datasheet and application notes for more information on high-temperature operation.