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, use a sufficient output capacitor with a low ESR, and consider adding a small ceramic capacitor (e.g. 10nF) in parallel with the output capacitor to improve stability.
While the datasheet specifies a maximum input voltage of 15V, it's recommended to derate this value by 10-20% to ensure reliable operation and prevent damage to the IC. Therefore, a maximum input voltage of 12-13V is recommended.
The LM2735YQSD/NOPB is rated for operation up to 125°C, but its performance and reliability may degrade at high temperatures. Be sure to follow the recommended operating conditions and consider using a heat sink or thermal management techniques to keep the IC within its specified temperature range.
Start by checking the input voltage, output voltage, and current draw using an oscilloscope or multimeter. Verify that the component values and layout match the recommended configuration in the datasheet. If issues persist, consider using a debugging tool such as a logic analyzer or a Texas Instruments-specific development board.
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LM2735YQSD/NOPB Overview
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
