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 or a dedicated heat sink.
To ensure reliable operation in high-temperature environments, it's essential to follow proper thermal design and layout guidelines. Additionally, consider using a heat sink or thermal interface material to reduce the junction temperature. ROHM also recommends derating the output current and voltage according to the temperature derating curve provided in the datasheet.
ROHM recommends using a low-ESR ceramic capacitor (X5R or X7R dielectric) with a value of 4.7uF to 10uF for the input capacitor. This helps to reduce voltage ripple and ensure stable operation.
To troubleshoot oscillation or instability issues, check the PCB layout for any potential noise coupling or resonance. Ensure that the input and output capacitors are properly decoupled, and the feedback network is correctly implemented. Also, verify that the component values and types match the recommended values in the datasheet. If issues persist, consider consulting ROHM's application notes or seeking support from their technical team.
According to ROHM, the maximum allowed voltage deviation on the input pin is ±10% of the nominal input voltage. Exceeding this limit may affect the regulator's performance, stability, or even cause damage to the device.
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