L4971 datasheet by STMicroelectronics

L4971 Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the L4971?
  The maximum input voltage that can be applied to the L4971 is 40V, but it's recommended to keep it below 35V for reliable operation.
• How do I ensure the L4971 is stable and doesn't oscillate?
  To ensure stability, make sure to use a minimum output capacitance of 10uF, and a maximum ESR of 1 ohm. Also, keep the input and output capacitors close to the regulator.
• What is the minimum input voltage required for the L4971 to regulate properly?
  The minimum input voltage required for the L4971 to regulate properly is 7.5V, but it's recommended to keep it above 8V for reliable operation.
• Can I use the L4971 in a high-temperature environment?
  The L4971 is rated for operation up to 150°C, but it's recommended to derate the output current and input voltage at high temperatures to ensure reliable operation.
• How do I protect the L4971 from input voltage surges and spikes?
  Use a TVS diode or a transient voltage suppressor in parallel with the input capacitor to protect the L4971 from input voltage surges and spikes.