TL431AID datasheet by STMicroelectronics

TL431AID Frequently Asked Questions (FAQs)

• What is the recommended operating temperature range for TL431AID?
  The recommended operating temperature range for TL431AID is -40°C to 125°C, although it can function up to 150°C with reduced performance.
• How do I ensure stability when using TL431AID in a feedback loop?
  To ensure stability, it's essential to add a compensation capacitor (typically 10nF to 100nF) between the REF and ADJ pins, and to keep the feedback loop impedance low.
• What is the maximum allowed voltage on the REF pin?
  The maximum allowed voltage on the REF pin is 36V, but it's recommended to keep it below 30V to ensure reliable operation.
• Can I use TL431AID as a voltage regulator?
  Yes, TL431AID can be used as a voltage regulator, but it's not designed for high-current applications. It's suitable for low-power voltage regulation, such as in voltage references or low-power supplies.
• How do I calculate the output voltage of TL431AID?
  The output voltage of TL431AID can be calculated using the formula: Vout = Vref * (1 + R1/R2), where Vref is the reference voltage (2.5V), R1 is the resistance between the REF and ADJ pins, and R2 is the resistance between the ADJ pin and ground.