LM340S-5.0/NOPB datasheet by Texas Instruments

LM340S-5.0/NOPB Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the LM340S-5.0/NOPB can handle?
  The maximum input voltage is 35V, but it's recommended to keep it below 25V for reliable operation.
• Can I use the LM340S-5.0/NOPB in a high-temperature environment?
  The LM340S-5.0/NOPB is rated for operation up to 125°C, but its performance may degrade at high temperatures. Ensure proper heat sinking and thermal management to maintain reliability.
• How do I ensure the output voltage is stable and accurate?
  Use a high-quality input capacitor (e.g., 10uF) and a low-ESR output capacitor (e.g., 10uF) to minimize ripple and ensure stability. Also, ensure the input voltage is at least 2V above the output voltage.
• What is the minimum input voltage required for the LM340S-5.0/NOPB to function?
  The minimum input voltage is 7.5V, but it's recommended to keep it above 8V for reliable operation.
• Can I use the LM340S-5.0/NOPB in a switching power supply application?
  No, the LM340S-5.0/NOPB is a linear voltage regulator, not suitable for switching power supply applications. It's designed for low-dropout, low-noise, and high-PSRR applications.