STMicroelectronics recommends a 2-layer PCB with a solid ground plane on the bottom layer and a thermal relief pattern on the top layer to ensure optimal thermal performance.
To ensure reliable operation in high-temperature environments, it is recommended to derate the device's power dissipation according to the temperature derating curve provided in the datasheet, and to ensure good thermal conduction between the device and the PCB.
STMicroelectronics recommends using a 10uF to 22uF X7R or X5R ceramic capacitor with a voltage rating of 25V or higher, placed as close as possible to the VIN pin to ensure optimal performance.
To protect the device from overvoltage and undervoltage conditions, it is recommended to use a voltage supervisor or a power-on reset circuit to monitor the input voltage and reset the device if it falls outside the recommended operating range.
To minimize EMI, it is recommended to keep the output stage traces as short as possible, use a ground plane under the output stage, and route the output traces away from sensitive analog circuits.
VN540SPTR-E datasheet
by STMicroelectronics
