STMicroelectronics provides a recommended PCB layout in the application note AN4996, 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 output voltage, current, 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 L9949 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.
Yes, the L9949 is designed to operate in high-temperature environments, with a maximum operating temperature range of -40°C to 150°C. However, the device's performance and reliability may be affected at extreme temperatures, and additional thermal management may be required.
STMicroelectronics provides a troubleshooting guide in the application note AN4996, which covers common issues and their solutions, such as output voltage regulation, current limiting, and thermal shutdown. Additionally, the datasheet provides a list of possible faults and their corresponding fault flags.
L9949 datasheet
by STMicroelectronics
