STMicroelectronics provides a recommended PCB layout in the application note AN4395, which includes guidelines for component placement, routing, and thermal management to ensure optimal performance and thermal dissipation.
The selection of the inductor depends on the specific application requirements, such as the input voltage, output voltage, and switching frequency. STMicroelectronics provides a list of recommended inductors in the datasheet, and also offers an inductor selection tool on their website to help with the selection process.
The maximum junction temperature of the L9907ND is 150°C, as specified in the datasheet. However, it's recommended to keep the junction temperature below 125°C to ensure reliable operation and long-term reliability.
While the L9907ND can operate up to 150°C, it's not recommended to use it in high-temperature environments above 125°C without proper thermal management and derating. STMicroelectronics provides thermal derating curves in the datasheet to help with the design process.
STMicroelectronics provides a troubleshooting guide in the application note AN4395, which covers common issues and their solutions, such as output voltage regulation, efficiency, and thermal management. Additionally, the datasheet provides a list of possible faults and their corresponding fault flags.
L9907ND datasheet
by STMicroelectronics
