LM2991S/NOPB datasheet by Texas Instruments

LM2991S/NOPB Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the LM2991S/NOPB can handle?
  The maximum input voltage is 40V, but it's recommended to keep it below 35V for reliable operation.
• How do I ensure the output voltage is stable and accurate?
  Use a 10uF or larger output capacitor with an ESR of 0.1 ohms or less, and a 1uF or larger input capacitor with an ESR of 1 ohm or less.
• What is the minimum input voltage required for the LM2991S/NOPB to regulate properly?
  The minimum input voltage required is 7.5V, but it's recommended to keep it above 8V for reliable operation.
• Can I use the LM2991S/NOPB in a high-temperature environment?
  Yes, but the device is only specified for operation up to 125°C. Above this temperature, the device's performance and reliability may degrade.
• How do I protect the LM2991S/NOPB from input voltage transients?
  Use a TVS (transient voltage suppressor) diode or a zener diode with a voltage rating higher than the maximum input voltage to clamp the input voltage.