AZ431LBZTR-G1

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Power Management Integrated Circuit (PMIC) voltage references are semiconductor components used to provide reference voltages to other components of the circuit. This can improve system accuracy and reliability, typically by minimizing errors due to component variations. AZ431LBZTR-G1 voltage reference is one of the many PMIC voltage references available in the market which is often used in different applications. This section will discuss AZ431LBZTR-G1’s application field and working principle.

АZ431LBZTR-G1 Application Field

AZ431LBZTR-G1 is particularly designed for usage in clock and timer applications and it is one of the most popular voltage references because of its wide working temperature range from -40℃ to +85℃. Its integrated circuits come as either DIP or SOT packages; DIP package of AZ431LBZTR-G1 is particularly well-suited for usage in LED lighting systems, transformers, PC drives, battery chargers, and also other low voltage reference applications. Due to its appealing features such as wide working temperature range, high accuracy, and low offset voltage, it is favored in fields such as automotive, industrial, consumer electronics, security, lighting, and medical.

АZ431LBZTR-G1 Working Principle

АZ431LBZTR-G1 is a band-gap voltage reference employed in voltage reference circuits. The main function of a band-gap reference is to provide a stable, accurate and temperature independent reference voltage. It does this using two separate thermo-electric elements made from BJT transistors in a voltage-divider configuration.

The band-gap reference circuit works by taking advantage of the difference in base-emitter voltages of a silicon junction which varies with temperature. The reference voltage produced by this type of circuit is typically 1.5-1.6V and is insensitive to temperature changes in the range of -25°C to +85°C. This circuit also offers a wider range of output voltage if additional components such as resistors, capacitors and voltage multipliers are added.

Conclusion

АZ431LBZTR-G1 PMIC voltage reference is a popular voltage reference used in a wide range of applications ranging from automotive to consumer electronics, security, lighting and medical. This reference voltage is adjustable via an external resistor, and has high accuracy and low offset voltage. It is made up of two thermo-electric elements in a voltage-divider configuration and produces a stable, temperature independent reference voltage of 1.5-1.6V.

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