STMicroelectronics provides a recommended PCB layout in the 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, but it can be disabled by connecting the TSD pin to VCC. When enabled, the device will shut down when the junction temperature exceeds 150°C. It's recommended to implement a thermal shutdown handler in your firmware to handle this event.
The maximum allowed voltage on the EN pin is 6V, which is higher than the recommended operating voltage of 3.3V or 5V. However, it's recommended to keep the EN pin voltage within the recommended operating voltage range to ensure reliable operation.
The TS514AID is rated for operation up to 125°C, but it's recommended to derate the output current and voltage according to the temperature derating curve provided in the datasheet. Additionally, ensure that the device is properly heatsinked and that the PCB is designed to handle high temperatures.
The output voltage ripple and noise can be calculated using the equations provided in the datasheet, which take into account the output capacitor value, ESR, and switching frequency. Additionally, STMicroelectronics provides a simulation model and a calculator tool to help with the calculation.
TS514AID datasheet
by STMicroelectronics
