L4972AD datasheet by STMicroelectronics

L4972AD Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the L4972AD can handle?
  The L4972AD can handle input voltages up to 40V, but it's recommended to keep it below 35V for reliable operation.
• How do I choose the right output capacitor for the L4972AD?
  Choose an output capacitor with a value between 10uF to 100uF, and a voltage rating of at least 1.5 times the output voltage. A low ESR (Equivalent Series Resistance) capacitor is recommended for stability.
• What is the minimum input voltage required for the L4972AD to operate?
  The L4972AD can operate with input voltages as low as 7V, but the output voltage regulation may not be guaranteed below 8V.
• Can I use the L4972AD in a high-temperature environment?
  The L4972AD is rated for operation up to 150°C, but the maximum junction temperature should not exceed 125°C for reliable operation. Derate the output current accordingly for high-temperature operation.
• How do I ensure the L4972AD is stable and doesn't oscillate?
  Ensure the output capacitor is properly sized, and the input capacitor is at least 1uF. Also, keep the feedback loop components (R1, R2, and C2) close to the IC and use a low-ESR output capacitor.