Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow general high-frequency PCB design guidelines, such as keeping the power traces short and wide, using a solid ground plane, and minimizing signal loop areas.
The choice of input and output capacitors depends on the specific application requirements, such as ripple current, voltage rating, and ESR. TI recommends using X5R or X7R ceramic capacitors with a voltage rating of at least 2x the input voltage and a capacitance value of 10uF to 22uF for the input capacitor, and 10uF to 47uF for the output capacitor.
The maximum ambient temperature for the LM4961LQ is 85°C, but it can be derated for higher temperatures. TI recommends following the thermal derating curve in the datasheet to ensure reliable operation.
Yes, the LM4961LQ is qualified for automotive and high-reliability applications, but it's essential to follow the specific requirements and guidelines for these applications, such as AEC-Q100 for automotive and MIL-STD-883 for high-reliability applications.
TI provides a troubleshooting guide in the datasheet, which includes common issues and their solutions. Additionally, engineers can use tools such as oscilloscopes and spectrum analyzers to identify and debug issues.
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