ROHM recommends a 4-layer PCB with a solid ground plane and a separate power plane for the IC. Keep the input and output traces short and away from each other to minimize noise and EMI.
Use a high-quality output capacitor with low ESR (Equivalent Series Resistance) and a sufficient capacitance value (e.g., 10uF or higher). Also, ensure the input voltage is within the recommended range and the device is operated within its specified temperature range.
Although the datasheet specifies a maximum input voltage of 18V, it's recommended to limit the input voltage to 15V or lower to ensure reliable operation and prevent damage to the IC.
While the datasheet specifies an operating temperature range of -40°C to 85°C, it's essential to consider the device's power dissipation and thermal resistance when operating in high-temperature environments. Ensure proper heat sinking and thermal management to prevent overheating.
Check the PCB layout, input voltage, and output capacitor values. Ensure the device is operated within its specified parameters and that there are no signs of overheating or physical damage. Consult ROHM's application notes and technical support resources for further guidance.
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BP5293-33 Overview
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