LM4040C50QDBZT

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The LM4040C50QDBZT is a high-precision, low-dropout (LDO) voltage reference family from Texas Instruments. It has an operating temperature range from -40°C to +125°C, making it ideal for automotive and other industrial applications that require extreme temperature operation.

The LM4040C50QDBZT is a shunt voltage reference that is designed to provide precision reference voltages. It offers accuracy of up to ±1% initial accuracy and keeps it throughout the life of the part. The device offers thermal stability of ±0.01%/°C and is designed for both low-voltage and high-voltage applications.

The family offers several reference voltages from 2.048V to 5.0V, with options for shielded versions, with either an SOT-23 or LP (leaded) package. It includes an impedance matching device that helps improve the noise performance of the reference output.

The device offers a low-current quiescent current of 2μA to help minimize power consumption and provides a wide range of current handling capabilities up to 20mA, as well as wide-range of power supply rejections (PSR) ratios.

The LM4040C50QDBZT further offers excellent speed of operation and is usually available from stock.

The LM4040C50QDBZT is used in applications where precision reference voltages are needed, such as in voltage regulation, battery monitoring, LCD screens and switching power supplies. It is also a good choice to use when a low-dropout, high-precision voltage reference is required.

The working principle of this device is based on a bandgap reference circuit that maintains a constant reference voltage, regardless of the input voltage or temperature variation. The device is connected to the power supply, and when the input voltage is applied to it, the voltage reference output is regulated and maintained regardless of any fluctuation in the input voltage or temperature.

In summary, the LM4040C50QDBZT is a high-precision, low-dropout voltage reference from Texas Instruments that is used in applications that require a reliable voltage reference, such as voltage regulation, battery monitoring, LCD screens and switching power supplies. It offers excellent thermal stability of ±0.01%/°C and an initial accuracy of up to ±1%. The device also has a low quiescent current of 2μA, and a wide-range of current handling capabilities and power supply rejection ratios. Its bandgap reference circuit helps maintain a constant reference voltage and make it ideal for precision applications.

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