TPS79501DCQRG4 datasheet by Texas Instruments

TPS79501DCQRG4 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for the TPS79501DCQRG4 to ensure optimal performance?
  Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow general guidelines for LDO regulator layout, such as keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing trace lengths and widths.
• How do I calculate the output voltage tolerance of the TPS79501DCQRG4?
  The output voltage tolerance of the TPS79501DCQRG4 is specified as ±2% over the operating temperature range. To calculate the output voltage tolerance, multiply the nominal output voltage by the tolerance percentage (e.g., for a 1.8V output, the tolerance would be ±36mV).
• What is the maximum input voltage that the TPS79501DCQRG4 can handle?
  The maximum input voltage of the TPS79501DCQRG4 is 5.5V, but it's recommended to keep the input voltage below 5V to ensure reliable operation and minimize power dissipation.
• Can I use the TPS79501DCQRG4 in a high-temperature environment?
  The TPS79501DCQRG4 is rated for operation up to 125°C, but it's recommended to derate the output current and input voltage at higher temperatures to ensure reliable operation. Consult the datasheet for specific derating guidelines.
• How do I ensure the TPS79501DCQRG4 is stable and doesn't oscillate?
  To ensure stability, follow the recommended PCB layout guidelines, use a sufficient output capacitor (at least 1µF), and keep the input capacitor close to the device. Additionally, ensure that the input voltage is within the recommended range and that the output current is within the specified limits.