STMicroelectronics provides a recommended PCB layout in their application note AN5096, which includes guidelines for thermal pad connection, copper pour, and via placement to ensure optimal thermal performance.
The thermal shutdown feature is enabled by default. To handle it, monitor the TSD pin, which goes low when the device reaches the thermal shutdown temperature (typically 150°C). When TSD is low, the device is disabled, and the output voltage is reduced to prevent overheating. Once the device cools down, the TSD pin goes high, and the device resumes normal operation.
STMicroelectronics recommends using a low-ESR ceramic capacitor (X5R or X7R dielectric) with a value between 4.7 μF and 10 μF. This ensures stable operation and minimizes input voltage ripple.
To ensure stability with a high-capacitance output filter, follow the guidelines in the datasheet for output filter design. Additionally, consider using a smaller output capacitor value or adding a series resistor to the output capacitor to prevent oscillations.
The maximum allowed voltage on the EN pin is 6 V. Exceeding this voltage may damage the device. Ensure that the voltage on the EN pin does not exceed the recommended maximum value.
DSM2180F3V-15T6 datasheet
by STMicroelectronics
