BU9795BKV-E2 - ROHM Semiconductor

BU9795BKV-E2 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  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.
• How do I ensure stable operation with a high-capacitance output capacitor?
  To ensure stable operation, ROHM recommends using an output capacitor with a low ESR (Equivalent Series Resistance) and a capacitance value between 10uF to 100uF. Additionally, a 1uF to 10uF ceramic capacitor in parallel with the main output capacitor can help reduce noise and oscillation.
• What is the maximum allowed voltage on the EN pin?
  The maximum allowed voltage on the EN (Enable) pin is 6V, which is the same as the maximum input voltage of the device. Applying a voltage higher than 6V may damage the internal circuitry.
• Can I use the BU9795BKV-E2 in a high-temperature environment?
  The BU9795BKV-E2 is rated for operation up to 105°C, but ROHM recommends derating the output current and voltage to ensure reliable operation. Consult the datasheet for specific derating guidelines.
• How do I troubleshoot oscillation or instability issues with the BU9795BKV-E2?
  To troubleshoot oscillation or instability issues, check the PCB layout for proper thermal design, ensure the output capacitor is properly selected, and verify that the input voltage is within the recommended range. Also, check for any noise or ripple on the input voltage and ensure that the device is not overheating.