LM4120AIM5X-2.0

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The LM4120AIM5X-2.0 is a lower power PMIC Voltage Reference device from National Semiconductor. This device provides a regulated voltage reference that is highly accurate and stable. The output voltage is held constant regardless of environmental and load changes. The LM4120AIM5X-2.0 is ideal for applications that require low power, high ripple rejection and stability over temperature.This device can be used in a variety of industrial, automotive and consumer applications such as motor drivers, battery management, AC/DC power supplies, and electronic point-of-sale and industrial measurement devices. The LM4120AIM5X-2.0 is available in a small 8-pin LLGA or 16-pinn SOIC package, making it suitable for a wide range of space-limited product needs.The LM4120AIM5X-2.0 has a wide input voltage range from 6V to 30V and an adjustable output voltage range from 0.8V to 5V, which makes it suitable for a wide variety of applications. The low power consumption of the device ensures maximum battery life, while the low ESR ensures that output voltage is not affected by load conditions. The low voltage noise of the device makes it ideal for applications that require high accuracy and stability.The LM4120AIM5X-2.0 uses a two-stage switch-mode topology to provide a high-accuracy voltage reference. The first stage consists of a fractional-N control loop that adjusts an internal reference voltage to achieve the desired output voltage. The internal reference is adjusted by comparing the current output voltage to an external reference voltage (VREF) supplied to the device. The VREF is then fed back to the internal reference voltage via a PWM modulator and a loop filter.The second stage is a buck converter that uses an external power FET and an inductor to reduce the input voltage to the desired output voltage. A sense resistor is used to sense the output voltage and feedback to the control logic to maintain the desired output voltage over line and load transients.In applications that require high efficiency, the LM4120AIM5X-2.0 can be used as a full-dropout converter. In this configuration, the external power FET is used to control current through the inductor and to ensure output accuracy.The LM4120AIM5X-2.0 is a great solution for applications that need a stable and accurate voltage reference. The wide input voltage range and adjustable output voltage range make the device suitable for a variety of applications. The high precision and low power consumption of the device make it ideal for battery-operated applications.

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