LM2940T-12.0/NOPB datasheet by Texas Instruments

LM2940T-12.0/NOPB Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the LM2940T-12.0/NOPB can handle?
  The maximum input voltage is 26V, but it's recommended to keep it below 20V for reliable operation.
• Can I use the LM2940T-12.0/NOPB in a high-temperature environment?
  The LM2940T-12.0/NOPB is rated for operation up to 125°C, but thermal derating is required above 85°C. Ensure proper heat sinking and thermal management to prevent overheating.
• How do I ensure the output voltage is stable and accurate?
  Use a 10uF or larger output capacitor with a low ESR (Equivalent Series Resistance) to ensure stability and accuracy. Also, ensure the input voltage is well-regulated and filtered.
• Can I use the LM2940T-12.0/NOPB in a switching power supply application?
  No, the LM2940T-12.0/NOPB is a linear voltage regulator, not suitable for switching power supply applications. It's designed for low-dropout, low-noise, and high-PSRR (Power Supply Rejection Ratio) applications.
• What is the minimum input voltage required for the LM2940T-12.0/NOPB to function properly?
  The minimum input voltage is 14.5V, but it's recommended to keep it above 15V for reliable operation and to ensure the output voltage is within regulation.