To minimize EMI and noise, it is recommended to follow a star-grounding scheme, keep the analog and digital grounds separate, and use a solid ground plane. Additionally, keep the input and output traces short and away from each other, and use a common-mode choke or ferrite bead to filter the output.
To ensure the DS1080LU+ operates within its specified temperature range, provide adequate heat sinking, avoid overheating, and keep the device away from heat sources. Monitor the junction temperature (TJ) and ensure it stays within the recommended range of -40°C to +125°C.
The recommended input voltage range for the DS1080LU+ is 4.5V to 5.5V. Operating the device outside this range may affect its performance and reliability.
The DS1080LU+ has a built-in output current limiting feature that kicks in when the output current exceeds 1.5A. To handle this, ensure your design can handle the current limit, and consider adding external current limiting or foldback protection if necessary.
When designing the PCB, place the DS1080LU+ near the power input, keep the input and output capacitors close to the device, and ensure the layout is symmetrical to minimize noise and EMI. Avoid placing the device near heat sources or high-current paths.
DS1080LU+ datasheet
by Maxim Integrated Products
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