LD1117DT18 datasheet by STMicroelectronics

LD1117DT18 Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the LD1117DT18?
  The maximum input voltage that can be applied to the LD1117DT18 is 15V, but it's recommended to keep it below 12V for reliable operation.
• Can I use the LD1117DT18 in a high-temperature environment?
  The LD1117DT18 is rated for operation up to 125°C, but the output voltage may decrease at high temperatures. It's recommended to derate the output current and voltage according to the temperature derating curve in the datasheet.
• How do I ensure stability of the output voltage with the LD1117DT18?
  To ensure stability of the output voltage, it's recommended to use a minimum output capacitance of 10uF with an ESR (Equivalent Series Resistance) of less than 5 ohms. Additionally, the input capacitance should be at least 1uF with an ESR of less than 5 ohms.
• Can I use the LD1117DT18 in a switching regulator application?
  No, the LD1117DT18 is a linear voltage regulator and is not suitable for use in switching regulator applications. It's designed for low-dropout, low-noise, and high-PSRR (Power Supply Rejection Ratio) applications.
• What is the typical dropout voltage of the LD1117DT18?
  The typical dropout voltage of the LD1117DT18 is around 1.2V, but it can be as low as 1.0V for some versions. Check the datasheet for the specific dropout voltage of the device you're using.