Texas Instruments recommends a 2-layer or 4-layer PCB with a solid ground plane on the bottom layer to improve thermal performance. Additionally, a thermal pad on the bottom of the package should be connected to the ground plane to reduce thermal resistance.
To ensure reliable operation at high temperatures, it's essential to follow the recommended operating conditions, including junction temperature (TJ) and ambient temperature (TA). Also, ensure proper thermal design, including heat sinking and airflow, to keep the device within the recommended temperature range.
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.
Texas Instruments recommends following proper ESD handling procedures, including using an ESD wrist strap or mat, and storing the devices in anti-static packaging. Additionally, the PTB78520WAS has built-in ESD protection, but it's still important to follow proper handling and storage procedures to prevent damage.
The recommended power-up sequence is to apply the input voltage (VIN) before the enable signal (EN). This ensures that the internal voltage regulators are properly initialized and the device operates correctly.
PTB78520WAS datasheet
by Texas Instruments
