Texas Instruments provides a recommended PCB layout in the datasheet, but it's also important to follow general best practices for switching regulator layout, such as keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing trace lengths and widths.
To ensure stability, make sure to follow the recommended component values and layout guidelines in the datasheet. Additionally, ensure that the input and output capacitors meet the recommended specifications, and that the feedback network is properly compensated. You can also use simulation tools like TI's WEBENCH or SPICE to verify the design.
The LM2758TL/NOPB has an operating junction temperature range of -40°C to 150°C, but the maximum ambient temperature range depends on the specific application and thermal design. As a general rule, the ambient temperature should be kept below 85°C to ensure reliable operation.
Yes, the LM2758TL/NOPB is qualified for automotive and high-reliability applications, but additional testing and validation may be required. Texas Instruments provides a range of documentation and support for these applications, including AEC-Q100 qualification and PPAP (Production Part Approval Process) support.
Start by verifying the input voltage, output voltage, and feedback network. Check for proper component values, layout, and soldering. Use an oscilloscope to measure the output voltage and switching node waveforms. Consult the datasheet and application notes for troubleshooting guides and common pitfalls to avoid.
LM2758TL/NOPB datasheet
by Texas Instruments
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