LM2991SX/NOPB datasheet by Texas Instruments

LM2991SX/NOPB Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the LM2991SX/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 LM2991SX/NOPB to function?
  The minimum input voltage is 7.2V, but it's recommended to keep it above 8V for reliable operation.
• Can I use the LM2991SX/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 calculate the power dissipation of the LM2991SX/NOPB?
  Use the formula: Pd = (Vin - Vout) x Iout, where Vin is the input voltage, Vout is the output voltage, and Iout is the output current.