ROHM recommends a thermal pad on the bottom of the package, connected to a large copper area on the PCB to dissipate heat efficiently. A minimum of 2oz copper thickness is recommended, and the thermal pad should be connected to a ground plane to reduce thermal resistance.
To ensure stable operation with a high-impedance output load, ROHM recommends adding a 10nF to 100nF capacitor in parallel with the output load to reduce oscillation and improve stability. Additionally, a series resistor (e.g., 10Ω to 100Ω) can be added to the output to further improve stability.
Although the datasheet doesn't specify a maximum voltage for the EN pin, ROHM recommends keeping the voltage on the EN pin within the VCC range (i.e., 3.3V or 5V) to ensure proper operation and prevent damage to the device.
While the BD80C0AFPS-E2 is rated for operation up to 125°C, ROHM recommends derating the output current and power dissipation at high temperatures to ensure reliable operation. Consult ROHM's application notes and thermal design guidelines for more information.
To troubleshoot oscillation or instability issues, ROHM recommends checking the PCB layout for proper thermal design, ensuring the output capacitor is properly sized and placed, and verifying that the input voltage is within the recommended range. Additionally, checking for noise on the input voltage and ensuring proper decoupling can help resolve oscillation issues.
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