The recommended operating temperature range for TL431ACD is -40°C to 125°C. While the device can operate up to 150°C, the recommended range ensures optimal performance and reliability.
To ensure stability, it's essential to decouple the TL431ACD with a capacitor (typically 10nF to 100nF) between the REF and ADJ pins, and another capacitor (typically 1uF to 10uF) between the VCC and GND pins. This helps to filter out noise and prevent oscillations.
While TL431ACD can be used as a voltage regulator, it's not recommended for high-current applications. The device is primarily designed as a voltage reference, and its output current is limited to 15mA. For high-current applications, consider using a dedicated voltage regulator IC.
The output voltage (Vout) of TL431ACD can be calculated using the formula: Vout = Vref x (1 + R1/R2), where Vref is the internal reference voltage (2.5V), R1 is the resistance between the ADJ pin and VCC, and R2 is the resistance between the ADJ pin and GND.
Yes, TL431ACD is suitable for automotive applications. It meets the AEC-Q100 qualification, which ensures the device can withstand the harsh environmental conditions found in automotive systems.
TL431ACD datasheet
by STMicroelectronics
