LM431CCZ/NOPB

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PMIC - Voltage Reference

The LM431CCZ/NOPB is a three terminal adjustable shunt regulator, based on a common emitter 2-stage RC coupled design. The device features a wide voltage range up to 36V, with a ± 10mV voltage regulation accuracy. It is available in a variety of packages including poly-resistor package, sot-23-6, and to-220, among others. The device is suitable for many different applications, including voltage regulation, voltage level shifting, dc/dc converter protection, and others.

The LM431CCZ/NOPB offers an integrated sense resistor for indicating terminal voltage, an adjustable voltage reference, and feedback circuit components. The device is capable of delivering regulated output current over a wide range of temperature, with a maximum dissipation of up to 0.07W. The sensing resistor can be adjusted to set the output voltage of the device and is capable of providing a maximum output current of up to 1A. The device also features adjustable voltage regulation of up to ± 10mV, making it suitable for many different applications.

The principle of operation of the LM431CCZ/NOPB is based on a 2-stage RC coupled design, which consists of two cascaded transistors, connected to the adjustable output voltage terminal. The first transistor provides the reference voltage for the output voltage, while the second transistor is controlled by the sense resistor, connected to the reference voltage terminal, in order to provide the feedback regulation for the output voltage. Furthermore, the device also features an adjustable resistance network, which provides the reference voltage for the control voltage output of the device, thus allowing for fine tuning of the output voltage.

The LM431CCZ/NOPB is a versatile device, suitable for many different voltage regulation applications. It provides a variety of advantages such as low cost, low power dissipation, and adjustable output voltage regulation over a wide temperature range. Furthermore, its integration of a sense resistor allows for precision voltage regulation, making it suitable for many different voltage reference and voltage level shifting applications.

In conclusion, the LM431CCZ/NOPB is an integrated device providing adjustable voltage references, feedback circuit components, and an adjustable sense resistor for indicating terminal voltage. Its features and integrated components make it very suitable for many voltage regulation and voltage level shifting applications, while its low cost and low power dissipation make it very cost-effective.

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