TPS79628DCQ datasheet by Texas Instruments

TPS79628DCQ Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for the TPS79628DCQ to ensure optimal performance?
  Texas Instruments provides a recommended PCB layout in the datasheet, but it's also important 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 to reduce noise and EMI.
• How do I choose the right output capacitor for the TPS79628DCQ?
  The output capacitor should be chosen based on the required output voltage ripple, transient response, and stability. A minimum capacitance of 2.2uF is recommended, with a low ESR (Equivalent Series Resistance) and a voltage rating that exceeds the output voltage. X5R or X7R ceramic capacitors are good options.
• What is the maximum input voltage that the TPS79628DCQ can handle?
  The TPS79628DCQ has an absolute maximum input voltage rating of 6.5V, but the recommended maximum operating input voltage is 5.5V to ensure reliable operation and prevent damage to the device.
• How does the TPS79628DCQ behave during input voltage transients?
  The TPS79628DCQ has a built-in voltage transient protector that helps to regulate the output voltage during input voltage transients. However, it's still important to ensure that the input voltage does not exceed the absolute maximum rating, and to use input capacitors with a low ESR to filter out noise and transients.
• Can I use the TPS79628DCQ in a high-temperature environment?
  The TPS79628DCQ has a maximum operating junction temperature of 125°C, but it's recommended to operate the device at a temperature below 85°C to ensure reliable operation and prevent thermal shutdown. It's also important to follow proper thermal design and heat sinking practices to ensure the device operates within its thermal limits.