LD1117ADT18TR datasheet by STMicroelectronics

LD1117ADT18TR Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the LD1117ADT18TR?
  The maximum input voltage is 15V, but it's recommended to keep it below 12V for optimal performance and to prevent overheating.
• How do I ensure the stability of the output voltage?
  To ensure stability, a minimum output capacitance of 10uF is recommended, and the ESR (Equivalent Series Resistance) should be between 0.3 ohms and 10 ohms.
• What is the dropout voltage of the LD1117ADT18TR?
  The dropout voltage is typically around 1.5V, which means the input voltage should be at least 1.5V higher than the output voltage for proper regulation.
• Can I use the LD1117ADT18TR in a high-temperature environment?
  The LD1117ADT18TR is rated for operation up to 125°C, but the junction temperature should be kept below 150°C to ensure reliability and prevent thermal shutdown.
• How do I calculate the power dissipation of the LD1117ADT18TR?
  Power dissipation can be calculated using the formula: Pd = (Vin - Vout) x Iout, where Vin is the input voltage, Vout is the output voltage, and Iout is the output current.