LM2940S-12/NOPB datasheet by Texas Instruments

LM2940S-12/NOPB Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the LM2940S-12/NOPB can handle?
  The maximum input voltage is 26V, but it's recommended to keep it below 20V for reliable operation.
• How do I ensure the output voltage is stable and accurate?
  Use a 10uF capacitor on the input and a 22uF capacitor on the output, and ensure the layout is designed to minimize noise and electromagnetic interference (EMI).
• What is the minimum input voltage required for the LM2940S-12/NOPB to function?
  The minimum input voltage is 14.5V, but it's recommended to keep it above 15V for reliable operation.
• Can I use the LM2940S-12/NOPB in a high-temperature environment?
  The LM2940S-12/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 protect the LM2940S-12/NOPB from input voltage surges?
  Use a transient voltage suppressor (TVS) diode or a voltage clamp on the input to protect against voltage surges and spikes.