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 reliability, follow the recommended derating curve, and consider using a heat sink or thermal interface material. Also, ensure the device is operated within the specified junction temperature (Tj) range.
While the datasheet specifies a maximum voltage of 25V, ROHM recommends considering voltage spikes and transients up to 30V for a short duration (less than 100ms). However, it's essential to ensure the device is operated within the specified absolute maximum ratings.
To prevent damage, ensure that the input voltage (VIN) is applied before the enable signal (EN). Also, when shutting down, disable the EN signal before removing VIN. A soft-start circuit can also be used to control the inrush current.
To minimize EMI and EMC issues, use a shielded layout, and consider adding a common-mode choke and/or a ferrite bead in series with the input voltage. Also, ensure the device is operated within the specified frequency range.
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PTZTFTE252.2B Overview
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