LM4120AIM5X-3.3/NOPB

Noise - 0.1Hz to 10Hz:	20µVp-p
Base Part Number:	LM4120
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Current - Supply:	275µA
Voltage - Input:	2 V ~ 12 V
Noise - 10Hz to 10kHz:	36µVp-p
Series:	--
Temperature Coefficient:	50ppm/°C
Tolerance:	±0.2%
Current - Output:	5mA
Voltage - Output (Min/Fixed):	3.3V
Output Type:	Fixed
Reference Type:	Series
Part Status:	Active
Packaging:	Tape & Reel (TR)

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PMIC - Voltage Reference: LM4120AIM5-3.3/NOPB Application Field and Working PrinciplePMIC, which stands for Power Management Integrated Circuit, is a versatile electronic device used to control and manage power supplies. Voltage reference is one type of PMIC that is used to regulate the output voltage of a power supply. This is necessary in order to ensure consistent voltage and current levels in an electronic circuit. The LM4120AIM5X-3.3/NOPB is a popular voltage reference PMIC manufactured by Texas Instruments.The LM4120AIM5X-3.3/NOPB is a three-pin device that offers a variety of features, including a wide operating voltage range of 2.5V to 6V and a high-accuracy output voltage of 3.3V. It is also designed with a fast start-up time of 3μs for quick and reliable power-up. Furthermore, it has an integrated power-good output, which provides an indication of when the output voltage is within the specified range.The LM4120AIM5X-3.3/NOPB is widely used in a variety of applications due to its low quiescent current and low dropout voltage. It is most commonly used in portable devices and embedded systems, where space and efficiency are important. It is also often used in automotive applications due to its wide temperature range and high-frequency operation.The LM4120AIM5X-3.3/NOPB works by taking in a lower voltage reference and then increasing the reference voltage level to the required output voltage. This is done using a control loop of feedback transistors, differential amplifiers and resistors. The feedback transistors act as a comparator to compare the output of the supply against the reference voltage. The differential amplifier amplifies the signal from the feedback transistors, while the resistors are used to tune the output signal.The process is initiated by the microcontroller sending a signal to the voltage reference. This signal is received by the feedback transistors, which then increase or decrease the output voltage to match the reference voltage. If the signal is too low, the transistors will increase the output voltage until it matches the reference. Conversely, if the signal is too high, the transistors will decrease the output voltage until it matches the reference. The output voltage will then remain consistent at the reference voltage until it is changed.Overall, the LM4120AIM5X-3.3/NOPB is a popular voltage reference PMIC that is used in numerous applications. With its lower power consumption and high precision, it provides a reliable and efficient way to regulate the output voltage of power supplies. It is easy to integrate and operate, making it a great choice for applications that require a stable and accurate reference voltage.

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