STMicroelectronics provides a recommended PCB layout in the application note AN4566, which includes guidelines for thermal vias, copper pours, and component placement to ensure optimal thermal performance.
The input capacitor values depend on the input voltage, output voltage, and output current. A general guideline is to use a minimum of 10uF ceramic capacitor with a voltage rating of at least 2x the input voltage. However, it's recommended to consult the application note AN4566 for more detailed guidance.
While the datasheet specifies an operating temperature range of -40°C to 150°C, the maximum ambient temperature for reliable operation is typically considered to be around 125°C. Above this temperature, the device's reliability and performance may be compromised.
To ensure EMC, follow the guidelines in the application note AN4566, which includes recommendations for PCB layout, component selection, and shielding. Additionally, consider using a common-mode choke and a Y-capacitor to filter out electromagnetic interference.
A low-ESR ceramic capacitor with a value of 10uF to 22uF is recommended for the output capacitor. The capacitor type and value should be selected based on the output voltage, output current, and desired ripple voltage.
L5150GJ datasheet
by STMicroelectronics
