TL431CZT datasheet by STMicroelectronics

TL431CZT Frequently Asked Questions (FAQs)

• What is the recommended operating temperature range for the TL431CZT?
  The recommended operating temperature range for the TL431CZT is -40°C to 125°C.
• How do I ensure stability when using the TL431CZT as a voltage reference?
  To ensure stability, a minimum capacitance of 100nF should be connected between the REF and ADJ pins, and the device should be decoupled from the power supply with a 10uF capacitor.
• What is the maximum allowed voltage on the REF pin?
  The maximum allowed voltage on the REF pin is 36V, and it is recommended to keep it below 30V for reliable operation.
• Can I use the TL431CZT as a voltage regulator?
  Yes, the TL431CZT can be used as a voltage regulator, but it is not designed for high-current applications. It is suitable for low-current, low-dropout voltage regulation.
• How do I calculate the output voltage of the TL431CZT?
  The output voltage of the TL431CZT can be calculated using the formula: Vout = Vref x (1 + R1/R2), where Vref is the reference voltage (2.5V), R1 is the resistance between the OUT and ADJ pins, and R2 is the resistance between the ADJ and GND pins.