TPS79901DDCRG4 datasheet by Texas Instruments

TPS79901DDCRG4 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for the TPS79901DDCRG4 to ensure optimal performance?
  A good PCB layout for the TPS79901DDCRG4 involves placing the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the input and output traces. TI provides a recommended PCB layout in the datasheet and application notes.
• How do I ensure the TPS79901DDCRG4 is stable and doesn't oscillate?
  To ensure stability, follow the recommended component values and PCB layout, and make sure the output capacitor is sufficient to filter out high-frequency noise. Additionally, adding a small ceramic capacitor (e.g., 10nF) between the EN pin and GND can help improve stability.
• What is the maximum input voltage that the TPS79901DDCRG4 can handle?
  The TPS79901DDCRG4 can handle input voltages up to 5.5V, but it's recommended to keep the input voltage below 5V to ensure reliable operation and minimize power consumption.
• Can I use the TPS79901DDCRG4 in a high-temperature environment?
  The TPS79901DDCRG4 is rated for operation up to 125°C, but its performance may degrade at high temperatures. It's essential to consider the device's thermal characteristics and ensure proper heat dissipation in high-temperature applications.
• How do I calculate the output voltage of the TPS79901DDCRG4?
  The output voltage of the TPS79901DDCRG4 is determined by the resistor divider network connected to the FB pin. Use the formula: Vout = 0.8V x (R1 + R2) / R2, where R1 and R2 are the resistors in the divider network.