LM4128BMFX-3.3

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LM4128BMFX-3.3 is an innovative family of high accuracy, low dropout voltage regulators with an internal voltage reference. It is an advanced monolithic three-terminal positive voltage regulator specifically designed for voltage-sensitive applications. It is part of the LM4128 Family of devices that offers better performance and improved protection features compared to conventional three-terminal voltage regulators. This series is classified as a PMIC - Voltage Reference due to its range of applications, efficient working principle, and performance features.

The main application field for LM4128BMFX-3.3 is for high-precision, low-dropout voltage references for microprocessor, interfacing, low-frequency signal conditioning, and similar precise applications. It provides high accuracy and stability, low dropout voltage characteristics, and is specifically designed for precise voltage reference operation over a wide range of operating temperatures. The versatile architecture of the LM4128BMFX-3.3 also makes it suitable for use in a wide range of applications such as advanced circuit protection circuitry, high-end consumer electronics, digital signal processing, and other various voltage regulation loops.

In terms of its working principle, the LM4128BMFX-3.3 is designed to control the output of a three-terminal voltage regulator. It operates as follows: The voltage reference is in parallel with the output voltage at the sensing node of the regulator. The feedback loop of the regulator consists of an internal reference generator, an amplifier, and a shunt resistor or divider network. This network monitors the output voltage and when the voltage reaches the reference level, the feedback loop immediately closes, preventing the output voltage from increasing any further. When the output voltage drops below the reference level, the feedback loop opens, restoring the output voltage to the reference level. The output voltage is regulated by the slope of the voltage curve.

The LM4128BMFX-3.3 also offers improved protection features over conventional three-terminal voltage regulators. It includes an under-voltage lockout circuit to maintain an accurate output voltage at low input voltages, as well as short-circuit and over-temperature protection circuitry to maintain the reliability of the device. The LM4128BMFX-3.3 also provides excellent ioC performance, low-temperature coefficient, and high-speed transient response for reliable and precise voltage regulation. Additionally, the LM4128BMFX-3.3 also offers an adjustable output voltage and an adjustable current limit, allowing for easy customization of the device to meet specific application requirements.

The LM4128BMFX-3.3 is a sophisticated and versatile voltage reference designed for precise voltage control in a wide range of applications. Its high performance characteristics and built-in protection features make it an ideal choice for high-precision, low-dropout voltage regulation applications. The LM4128BMFX-3.3 is classified as a PMIC - Voltage Reference due to its range of applications, efficient working principle and performance features.

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