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 reliability, follow the recommended operating temperature range (up to 150°C), and consider derating the power dissipation according to the temperature. Also, ensure proper thermal design, and consider using a heat sink or thermal interface material to reduce thermal resistance.
The maximum allowable voltage for the RB461FMT106 is 100V. Exceeding this voltage may damage the device. It's essential to ensure that the voltage rating is not exceeded, even during transient conditions or power-up/down sequences.
The RB461FMT106 requires a specific power sequencing to prevent damage. Ensure that the input voltage (VIN) is applied before the enable signal (EN), and that the output voltage (VOUT) is not loaded until the device is fully enabled. A soft-start circuit can help with power sequencing and reduce inrush currents.
To minimize EMI and EMC issues, follow proper PCB layout practices, such as separating analog and digital grounds, using a solid ground plane, and placing decoupling capacitors close to the device. Additionally, consider using EMI filters or shielding to reduce radiated emissions.
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RB461FMT106 Overview
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