ROHM recommends a PCB layout with a thermal pad connected to a large copper area on the bottom layer, and multiple vias to dissipate heat efficiently. A minimum of 2oz copper thickness is recommended.
To ensure stable operation with a high-ESR output capacitor, ROHM recommends adding a 10nF to 100nF ceramic capacitor in parallel with the output capacitor to reduce the overall ESR.
The maximum allowed voltage on the EN pin is 6V, exceeding which may cause damage to the device. It's recommended to use a voltage divider or a clamp circuit to limit the voltage to 6V or less.
While the BD433U2EFJ-CE2 is rated for operation up to 105°C, ROHM recommends derating the output current and voltage to ensure reliable operation in high-temperature environments. Consult the datasheet and ROHM's application notes for guidance.
To troubleshoot oscillation or instability issues, check the PCB layout for proper decoupling, ensure the output capacitor is properly sized and placed, and verify that the input voltage is within the recommended range. Consult ROHM's application notes and technical support for further assistance.
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