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 heat sink.
To ensure stable operation with a high-impedance input source, ROHM recommends adding a capacitor (e.g., 10nF to 100nF) between the input pin and the GND pin to reduce noise and oscillation. Additionally, a series resistor (e.g., 1kΩ to 10kΩ) can be added to the input pin to limit the input current.
The maximum allowed voltage on the EN (enable) pin is VCC + 0.3V. Exceeding this voltage may cause damage to the device. It is recommended to keep the EN pin voltage within the specified range to ensure reliable operation.
The BU7265G-TR is rated for operation up to 105°C. However, ROHM recommends derating the output current and voltage to ensure reliable operation at high temperatures. Consult the datasheet and ROHM's application notes for more information on high-temperature operation.
To troubleshoot oscillation or instability issues, check the PCB layout for proper grounding, decoupling, and thermal management. Ensure that the input and output capacitors are of sufficient value and type. Also, verify that the input voltage is within the specified range and that the device is not overheating. Consult ROHM's application notes and technical support for further assistance.
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