LM329BZ#PBF

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Introduction
The LM329BZ#PBF is an adjustable voltage reference device and is part of the family of voltage references typically categorized under PMIC - Voltage Reference. It is ideal for a variety of applications such as charging and battery monitoring systems, radio receivers, energy and wireless network end nodes, and many other high precision voltage reference applications. This article looks at the properties and working principles of the LM329BZ#PBF.

Properties
The LM329BZ#PBF is designed to provide an adjustable reference voltage to the system circuit with a temperature coefficient of less than 10ppm/°C. It is an adjustable, two-terminal low dropout bandgap reference and is capable of providing a very high precision, low noise reference voltage with excellent line and load regulation. The output voltage of the device can be adjusted with a single resistor and can range from 0.4V to 4V. The LM329BZ#PBF has a maximum operating current of 10mA and a minimum input voltage of 0.8V. It has a typical operating temperature range of -40°C to 85°C.

Working Principle
The LM329BZ#PBF utilizes a bandgap reference technique to provide the adjustable reference voltage. A bandgap reference voltage is created by the combination of two different methods, the diode junction effect and the field effect. The first part of the technique is the diode junction effect which uses a P-N junction to provide the reference voltage. This voltage is adjusted by applying a fixed voltage, usually +2.5V, to the base of the transistor. The second part of the technique uses the field effect to adjust the reference voltage. This is done by applying a positive voltage to the base of the transistor, which increases the output of the reference voltage. The two separate effects of the diode junction effect and the field effect are combined and then applied to the circuit. This combination produces the adjustable reference voltage that is needed for the system circuit.The LM329BZ#PBF utilizes the bandgap reference technique to provide an adjustable reference voltage for the application. The output voltage of the device is adjustable by using a single resistor, which can adjust the voltage from 0.4V to 4V. The device is stable and reliable with excellent line and load regulation, and temperature stability. The major advantage of the LM329BZ#PBF is that it has a maximum operating current of 10mA, which is suitable for low current applications.

Conclusion
The LM329BZ#PBF is a highly reliable adjustable voltage reference device which is part of the PMIC - Voltage Reference family. It utilizes the bandgap reference technique to provide a stable and adjustable reference voltage for the system. The voltage can be adjusted from 0.4V to 4V by using a single resistor and the temperature stability of the device is excellent with a temperature coefficient of less than 10ppm/°C. The LM329BZ#PBF is suitable for applications such as charging and battery monitoring systems, radio receivers, energy and wireless network end nodes and many other high precision voltage reference applications.

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