LM4128CQ1MF3.3/NOPB

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Power Management ICs, or PMICs, are used to manage voltage levels and optimize power supply performance in computing, telecommunications and peripheral devices. Voltage References are used in systems to maintain a stable reference voltage. The LM4128CQ1MF3.3/NOPB is a voltage reference developed by Texas Instruments for use in a variety of applications. This paper will discuss the LM4128CQ1MF3.3/NOPB application field and its working principle.

Application Field

The LM4128CQ1MF3.3/NOPB is a voltage reference specifically designed for microcontrollers and other embedded systems that utilize a 3.3V reference voltage. This Voltage Reference can be used to accurately set and maintain the reference voltage at 3.3V in a variety of power applications. Its wide input range (1.7 – 5.5V) makes it suitable for working across a wide variety of voltage sources, including both low and high-voltage AC and DC sources. This allows the voltage reference to be used in a variety of applications, from medical and telecom to industrial and automotive.

The LM4128CQ1MF3.3/NOPB is an ideal choice for systems requiring both stability and low noise operation. Its 1.2% maximum reference accuracy ensures that the reference voltage remains stable over large temperature ranges. In addition, its low voltage noise performance helps to minimize system noise, providing greater control accuracy and a more robust system performance.

Working Principle

The LM4128CQ1MF3.3/NOPB is a three-terminal voltage reference that operates by comparing a stable reference voltage to an input voltage, and then regulating that input voltage so that it matches the stable reference voltage. The device is given a positive input voltage which is compared to the reference voltage of 3.3V internally. When the input voltage is greater than the reference voltage, the LM4128CQ1MF3.3/NOPB will regulate the input voltage by reducing it to match the reference voltage. Conversely, when the input voltage is lower than the reference voltage, the LM4128CQ1MF3.3/NOPB will raise the input voltage to match the reference voltage.

The LM4128CQ1MF3.3/NOPB also has a shut down pin which can be used to reduce power consumption during quiescent periods. By setting this pin to high, the device is disabled, reducing the leakage and power consumption.

Conclusion

The LM4128CQ1MF3.3/NOPB is an ideal voltage reference for use in a wide range of applications where a consistent and stable reference voltage of 3.3V is needed. Its wide input range and high accuracy performance make it suitable for a variety of power applications. The device also offers a low noise performance, ensuring greater control accuracy and a more robust system performance. In addition, its shut down pin allows for the reduction of power consumption during quiescent periods. The LM4128CQ1MF3.3/NOPB is an excellent choice for any application that requires a reliable and accurate voltage reference.

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