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 or a dedicated heat sink.
To ensure stable operation with a high-ESR output capacitor, ROHM recommends adding a 1-10nF ceramic capacitor in parallel with the output capacitor to improve the overall ESR. Additionally, the output capacitor should be placed as close as possible to the IC to minimize parasitic inductance.
The maximum allowed voltage on the EN pin is 6V, which is the same as the maximum input voltage of the device. Applying a voltage higher than 6V on the EN pin may damage the internal circuitry.
While the BD9006F-E2 is rated for operation up to 105°C, ROHM recommends derating the output current and voltage to ensure reliable operation in high-temperature environments. Consult the datasheet for derating curves and guidelines.
To troubleshoot oscillations or instability issues, ROHM recommends checking the PCB layout for parasitic inductance and capacitance, ensuring proper decoupling and bypassing, and verifying that the input and output capacitors meet the recommended specifications. Additionally, checking the voltage and current waveforms with an oscilloscope can help identify the root cause of the issue.
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