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.
To ensure stable operation with a high-impedance input source, add a 1kΩ to 10kΩ resistor in series with the input pin to prevent oscillation. Additionally, a 10nF to 100nF capacitor can be added in parallel with the input pin to filter out noise.
The maximum allowed voltage on the enable pin (EN) is 6V, which is higher than the recommended operating voltage of 5V. However, it's essential to ensure the EN pin voltage does not exceed the supply voltage (VCC) to prevent damage to the device.
While the BD3574YFP-ME2 is rated for operation up to 125°C, it's essential to consider the derating of the device's characteristics, such as output current and voltage regulation, at high temperatures. Ensure your design takes into account these deratings to guarantee reliable operation.
To minimize EMI, use a shielded inductor, keep the switching node (SW) as short as possible, and add a 10nF to 100nF capacitor between the SW pin and GND. Additionally, consider using a common-mode choke or a ferrite bead on the input and output lines.
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