TL431IYDT datasheet by STMicroelectronics

TL431IYDT Frequently Asked Questions (FAQs)

• What is the maximum operating temperature range for the TL431IYDT?
  The TL431IYDT can operate from -40°C to 125°C, making it suitable for a wide range of applications.
• How do I ensure stability when using the TL431IYDT as a voltage reference?
  To ensure stability, it's essential to decouple the TL431IYDT with a 10nF to 100nF capacitor between the REF and ADJ pins, and to use a low-ESR capacitor (e.g., ceramic or film capacitor) for the output capacitor.
• What is the recommended layout and PCB design considerations for the TL431IYDT?
  To minimize noise and ensure proper operation, it's recommended to keep the TL431IYDT away from high-current paths, use a solid ground plane, and keep the input and output capacitors close to the device. Additionally, use a low-impedance connection between the REF and ADJ pins.
• How do I calculate the output voltage of the TL431IYDT?
  The output voltage of the TL431IYDT can be calculated using the formula: Vout = Vref * (1 + R1/R2), where Vref is the internal reference voltage (2.5V), and R1 and R2 are the resistors connected between the REF, ADJ, and output pins.
• What is the typical current consumption of the TL431IYDT?
  The typical current consumption of the TL431IYDT is around 2.5mA, but this can vary depending on the output voltage and load conditions.