STMicroelectronics recommends a PCB layout with a thermal pad connected to a large copper area on the bottom layer, and multiple vias to dissipate heat. A minimum of 2oz copper thickness is recommended.
To ensure reliable operation at high temperatures, it's essential to follow the recommended thermal design guidelines, use a suitable heat sink, and ensure good airflow. Additionally, consider derating the device's power dissipation according to the temperature derating curve provided in the datasheet.
The maximum allowed voltage on the input pins is 5.5V, which is the absolute maximum rating. However, for reliable operation, it's recommended to keep the input voltage within the recommended operating range of 3.3V to 5V.
The TS420-400B has built-in ESD protection, but it's still recommended to follow proper ESD handling procedures during assembly and testing. Use an ESD wrist strap or mat, and ensure that the device is handled in a static-safe environment.
The recommended input capacitance value is 10nF to 100nF, depending on the specific application and noise requirements. A larger capacitance value can help filter out noise, but may also increase the startup time.
TS420-400B datasheet
by STMicroelectronics
