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 operating conditions, including the maximum junction temperature (Tj) of 150°C. Additionally, consider using a heat sink or thermal management system to keep the device temperature within the recommended range.
ROHM recommends using a low-ESR ceramic capacitor with a value of 10uF to 22uF for the input capacitor (Cin). This helps to reduce voltage ripple and ensure stable operation.
To troubleshoot issues with output voltage regulation, check the input voltage, output load, and feedback resistors (R1 and R2) for correct values and connections. Also, verify that the output capacitor (Cout) is properly connected and has a suitable value (typically 10uF to 22uF). If issues persist, consult the application notes and ROHM's support resources.
The maximum output current capability of the BU4925G-TR is 2A. However, the actual output current may be limited by the input voltage, output voltage, and thermal conditions. Be sure to check the datasheet and application notes for specific guidance on output current capability.
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