STMicroelectronics provides a recommended PCB layout in the application note AN4553, which includes guidelines for component placement, thermal management, and routing to ensure optimal performance and minimize electromagnetic interference (EMI).
The selection of the inductor depends on the specific application requirements, such as the input voltage, output voltage, and output current. STMicroelectronics provides a list of recommended inductors in the datasheet, and also offers an inductor selection tool on their website to help engineers choose the right inductor for their design.
The maximum junction temperature of the L9822E 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 minimize the risk of thermal shutdown.
The L9822E is rated for operation up to 105°C ambient temperature, but it's not recommended to use it in high-temperature environments above 125°C without proper thermal management and derating. Engineers should consult the datasheet and application notes for guidance on using the L9822E in high-temperature applications.
STMicroelectronics provides a troubleshooting guide in the application note AN4553, which covers common issues and their solutions, such as output voltage regulation, current limiting, and thermal shutdown. Engineers can also consult the datasheet and contact STMicroelectronics' technical support for further assistance.
