TPS5420DRG4 datasheet by Texas Instruments

TPS5420DRG4 Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the TPS5420DRG4?
  The maximum input voltage that can be applied to the TPS5420DRG4 is 18V, but it's recommended to keep it below 15V for optimal performance and reliability.
• How do I ensure the TPS5420DRG4 is stable and doesn't oscillate?
  To ensure stability, make sure to follow the recommended layout and component selection guidelines in the datasheet, and add a 10uF ceramic capacitor between VIN and GND. Also, ensure that the output capacitor is sufficient to filter out high-frequency noise.
• What is the minimum input capacitance required for the TPS5420DRG4?
  The minimum input capacitance required is 10uF, but it's recommended to use a 22uF or larger capacitor to ensure stability and optimal performance.
• Can I use the TPS5420DRG4 in a high-temperature environment?
  The TPS5420DRG4 is rated for operation up to 125°C, but it's recommended to derate the output current and input voltage at high temperatures to ensure reliability and prevent overheating.
• How do I calculate the output voltage of the TPS5420DRG4?
  The output voltage of the TPS5420DRG4 can be calculated using the formula: VOUT = 0.8V x (1 + R1/R2), where R1 and R2 are the resistors in the feedback network.