ABLIC provides a recommended PCB layout in their application note AN12171, which includes guidelines for component placement, routing, and thermal management to ensure optimal performance and minimize noise.
The S-8520F18MC-BNDT2U has a high power dissipation, so it's essential to implement proper thermal management. ABLIC recommends using a thermal pad, thermal via, and a heat sink to keep the junction temperature below 125°C. Refer to the datasheet for thermal resistance values and thermal design guidelines.
ABLIC recommends using a ceramic capacitor with a value between 1uF to 10uF, and a voltage rating of 10V or higher, as close to the VIN pin as possible. The capacitor should have a low ESR and be rated for high-frequency operation.
To ensure proper power-up and power-down, ABLIC recommends using a soft-start circuit to limit the inrush current, and a power-good signal to monitor the output voltage. Additionally, follow the recommended power-up and power-down sequences outlined in the datasheet.
The maximum allowed voltage on the EN pin is 6V. Exceeding this voltage may damage the device. It's recommended to use a voltage divider or a level shifter to ensure the EN pin voltage remains within the specified range.
S-8520F18MC-BNDT2U datasheet
by ABLIC Inc.
