LM4040EIM3-2.5/NOPB

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The LM4040EIM3-2.5/NOPB is a precision voltage reference from Texas Instruments (TI). This device belongs to the family of PMIC (Power Management Integrated Circuit) - Voltage Reference. This part is an advanced and small size three-terminal bandgap voltage reference with very low temperature coefficient, and excellent long-term stability. It also has a ‘wakeup’ feature that allows it to maintain operation in low power or sleep mode. LM4040EIM3-2.5/NOPB is widely used in many digital and analog circuits, including LED display drive, motor control, load sensing, and digital processorbus interface.

The LM4040EIM3-2.5/NOPB is constructed with the bipolar process to provide a low output voltage (~ 2.5V) and low temperature coefficient typically ~7ppm/°C. It also has low output impedance and excellent long-term stability. The device is designed as an inverting-mode reference, hence the reference voltage is applied to the positive input terminal and the negative input terminal should be connected to the ground. It is a three-terminal device, which consists of an output and two inputs, namely a reference (Vref) and ground (GND). The Vref is connected to a reference voltage source such as a Zener diode, while the GND is connected to the ground of the application.

The LM4040EIM3-2.5/NOPB works by comparing a reference voltage to the ground potential. When the difference in potential between these two terminals is sufficiently large, an internal transistor/resistor network, known as a bandgap circuit, creates a voltage drop which, when amplified, results in the target reference voltage at the output terminal. This reference voltage is then used to regulate the other circuits in the application. The reference voltage is regulated by means of a current-limiting resistor, which maintains the desired operating current.

The LM4040EIM3-2.5/NOPB is extensively used in automotive and industrial applications such as power converters, LED displays, motor controllers, load sensors, and digital processor bus interfaces. It is also used in consumer applications like mobile phones, routers and set-top boxes. The device is also suitable for portable and telecom applications due to its low profile, low power consumption and high accuracy. Other features include a reset input for power-up sequencing and a wake-up feature for low power or sleep mode operation.

Overall, the LM4040EIM3-2.5/NOPB is a highly accurate, small size and low power device belonging to the family of PMIC - Voltage Reference. This device is widely used in automotive and industrial applications because of its excellent performance characteristics. It provides a precise reference voltage that is used to regulate other circuits in the application.

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