LMV431AIZ/LFT3 datasheet by Texas Instruments

LMV431AIZ/LFT3 Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for LMV431AIZ/LFT3?
  The recommended operating voltage range for LMV431AIZ/LFT3 is 1.6V to 5.5V. However, it can operate up to 15V with reduced accuracy and stability.
• How do I ensure stability when using LMV431AIZ/LFT3 as a voltage reference?
  To ensure stability, it's essential to decouple the input pin with a capacitor (typically 10nF to 100nF) and use a low-ESR capacitor (less than 5 ohms) for the output capacitor. Additionally, keep the layout clean and avoid noise coupling.
• What is the temperature coefficient of the LMV431AIZ/LFT3 voltage reference?
  The temperature coefficient of the LMV431AIZ/LFT3 voltage reference is typically around 10ppm/°C, which means the output voltage will change by 10ppm (parts per million) for every 1°C change in temperature.
• Can I use LMV431AIZ/LFT3 as a voltage regulator?
  While LMV431AIZ/LFT3 can be used as a voltage regulator, it's not recommended due to its limited current drive capability (up to 10mA) and lack of short-circuit protection. Instead, use a dedicated voltage regulator IC for such applications.
• How do I calculate the output voltage of LMV431AIZ/LFT3 when using an external resistor divider?
  When using an external resistor divider, the output voltage of LMV431AIZ/LFT3 can be calculated using the formula: Vout = (R1 / (R1 + R2)) * 1.24V, where R1 and R2 are the resistors in the divider network.