TPS79633DCQR datasheet by Texas Instruments

TPS79633DCQR Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for the TPS79633DCQR to minimize noise and ensure stability?
  A good PCB layout for the TPS79633DCQR involves placing the input and output capacitors close to the device, using a solid ground plane, and keeping the power traces short and wide. Additionally, it's recommended to use a star-ground configuration and to avoid routing high-current traces near sensitive analog signals.
• How do I ensure the TPS79633DCQR is stable and doesn't oscillate?
  To ensure stability, make sure to follow the recommended PCB layout, use a sufficient output capacitor (at least 10uF), and add a small ceramic capacitor (around 100nF) between the output and ground. Additionally, ensure that the input voltage is within the recommended range and that the device is not overheating.
• What is the maximum input voltage that the TPS79633DCQR can handle?
  The TPS79633DCQR can handle input voltages up to 6.5V, but it's recommended to keep the input voltage below 6V to ensure reliable operation and to prevent overheating.
• Can I use the TPS79633DCQR in a high-temperature environment?
  The TPS79633DCQR is rated for operation up to 125°C, but its performance may degrade at high temperatures. It's recommended to derate the output current and ensure good airflow to prevent overheating.
• How do I calculate the output voltage of the TPS79633DCQR?
  The output voltage of the TPS79633DCQR is set by the resistive divider network connected to the FB pin. The output voltage can be calculated using the formula: Vout = 0.8V x (R1 + R2) / R2, where R1 and R2 are the resistors in the divider network.