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 reliable operation in high-temperature environments, it's essential to follow the recommended derating curves for the device. Additionally, consider using a heat sink or thermal interface material to reduce the junction temperature. ROHM also recommends using a thermistor or thermocouple to monitor the temperature and adjust the operating conditions accordingly.
ROHM recommends using X7R or X5R ceramic capacitors with a voltage rating of 50V or higher for the input and output capacitors. The recommended capacitance values are 10uF to 22uF for the input capacitor and 10uF to 47uF for the output capacitor. The capacitor's ESR should be less than 100mΩ to ensure stable operation.
To prevent EOS and ESD damage, follow proper handling and storage procedures for the device. Use an anti-static wrist strap or mat when handling the device, and ensure that the PCB is properly grounded. Implement ESD protection circuits, such as TVS diodes or ESD arrays, on the input and output lines to protect the device from voltage transients.
ROHM recommends a soft-start sequence to prevent inrush currents and ensure reliable operation. The recommended sequence is to apply the input voltage first, followed by the enable signal. The enable signal should be applied after the input voltage has reached its nominal value.
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UCR18EVHFSR012 Overview
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