ROHM provides a recommended PCB layout in the application note AN1191, which includes guidelines for thermal vias, copper pours, and component placement to minimize thermal resistance and ensure reliable operation.
The input capacitor selection depends on the input voltage, output current, and ripple current requirements. ROHM recommends using a low-ESR capacitor with a value between 1uF to 10uF, and a voltage rating of at least 1.5 times the input voltage. Refer to the application note AN1191 for more details.
The maximum output current of the BD37533FV-E2 is 3A, but it's recommended to derate the output current based on the ambient temperature and PCB layout to ensure reliable operation. Refer to the thermal derating curve in the datasheet for more information.
The BD37533FV-E2 has an operating temperature range of -40°C to 105°C, but the maximum junction temperature (Tj) is 150°C. Ensure that the regulator is properly heat-sinked and the PCB layout is optimized for thermal performance to prevent overheating.
To ensure stability, follow the recommended PCB layout and component selection guidelines in the application note AN1191. Additionally, ensure that the output capacitor has a low ESR and is properly decoupled from the output voltage. Avoid using ceramic capacitors with high ESL values, as they can cause oscillation.
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