TL431BQDBVR datasheet by Texas Instruments

TL431BQDBVR Frequently Asked Questions (FAQs)

• What is the recommended operating temperature range for TL431BQDBVR?
  The recommended operating temperature range for TL431BQDBVR is -40°C to 125°C.
• How do I ensure stability when using TL431BQDBVR in a voltage regulator circuit?
  To ensure stability, it's recommended to use a minimum output capacitance of 10uF and a minimum ESR of 0.1 ohms in the output capacitor. Additionally, a 1uF to 10uF capacitor can be added between the REF and ADJ pins to improve stability.
• What is the maximum allowed voltage on the REF pin?
  The maximum allowed voltage on the REF pin is 36V. Exceeding this voltage can damage the device.
• Can I use TL431BQDBVR as a voltage reference in a high-temperature environment?
  Yes, TL431BQDBVR is suitable for high-temperature environments. However, the voltage reference accuracy may degrade at high temperatures. It's recommended to use a voltage reference with a tighter tolerance and a lower temperature coefficient for high-temperature applications.
• How do I calculate the output voltage of a voltage regulator circuit using TL431BQDBVR?
  The output voltage of a voltage regulator circuit using TL431BQDBVR 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 pin and ground.