AZ431LBZTR-E1

Temperature Coefficient:	20ppm/°C Typical
Supplier Device Package:	TO-92
Package / Case:	TO-226-3, TO-92-3 (TO-226AA) (Formed Leads)
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C (TA)
Current - Cathode:	80µA
Current - Supply:	--
Voltage - Input:	--
Noise - 10Hz to 10kHz:	--
Noise - 0.1Hz to 10Hz:	--
Series:	--
Tolerance:	±1%
Current - Output:	100mA
Voltage - Output (Max):	18V
Voltage - Output (Min/Fixed):	1.24V
Output Type:	Adjustable
Reference Type:	Shunt
Part Status:	Active
Packaging:	Tape & Box (TB)

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Introduction to AZ431LBZTR-E1

The AZ431LBZTR-E1 is a low-power voltage reference designed and manufactured by Texas Instruments. It is classified as a PMIC (Power Management Integrated Circuits) since it is intended to manage and monitor the power supply of electronic devices. The AZ431LBZTR-E1 is specifically designed to be used as a voltage reference in a power supply circuit, allowing it to maintain the reference voltage level throughout the entire circuit, no matter how much current is drawn.

Application Field of AZ431LBZTR-E1

The application field of AZ431LBZTR-E1 relates to any design requiring a low-power and accurate voltage reference for the control of an oscillator or a current source. Such applications include power supply and distribution devices, battery-powered electronics, zero-point voltage reference systems and programmable logic circuits. In addition, AZ431LBZTR-E1 can also be used as a temperature sensor in battery-powered applications in order to take advantage of its low power/cost combination. Additionally, thanks to its high accuracy, change-over performance and stability over temperature, AZ431LBZTR-E1 is also suitable for use in battery management systems.

Work Principle of AZ431LBZTR-E1

The AZ431LBZTR-E1 uses a conventional bandgap reference circuit, which works by creating a voltage reference by means of a voltage differential between two or more cascaded bipolar transistors. The voltage added by the base-emitter junction of one of the transistors is slightly offset from the voltage decreased by the base-emitter junction of the other.The minimum voltage of this rail-to-rail voltage difference is established by the biasing current, typically defined in the 1.225μA range. This small current source is the one that maintains the AZ431LBZTR-E1’s excellent temperature stability which typically amounts to 1mV/°C.The main features of the AZ431LBZTR-E1 that make it stand out are its low power consumption (typically 500nA), high accuracy of +-0.5% and low offset voltage of < 1mV. Additionally, it is capable of driving several parallel loads, optimally suited to low power/cost requirements applications.

Conclusion

In conclusion, the AZ431LBZTR-E1 is a low-power, accurate voltage reference ideally suited for Power Management Integrated Circuits, such as power supply and distribution devices, programmable logic circuits, battery-powered electronics and zero-point reference systems. Thanks to its flexibility and its low power consumption, it is one of the most reliable and cost-efficient voltage references available on the market today.

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