LP3981IMM-2.7/NOPB

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The LP3981IMM-2.7/NOPB is a device designed to provide precise voltage regulation and control in a wide variety of applications. The device is part of a range of products from Texas Instruments which fall within the classification of PMIC – Voltage Regulators – Linear, and can be harnessed to quickly solve many power problems in consumer, industrial and automotive electronics. In this article, we\'ll discuss the key features of the LP3981IMM-2.7/NOPB, its application area and its working principle.

Features and Specifications

The LP3981IMM-2.7/NOPB is Regulator/Controller IC for Positive OR Negative Voltages, with an adjustable output voltage range of 1.10V-24V and continuous current of 650mA. It uses advanced BiCMOS technology and employs an internal P-channel MOSFET to deliver the maximum efficiency. The device is capable of providing high frequency operation at lower output voltage ranges and can deliver an extremely low dropout voltage at higher output voltage ranges.

The LP3981IMM-2.7/NOPB is designed with an internal reference, allowing an output voltage range of 1.10V-24V to be adjusted digitally via digital logic control at the input. This is achieved via a 3-bit Binary Code, which gives a total of 8 different voltage settings. In addition, the device features an on-chip Error Amp which provides variable temperature stability and ensures maximum voltage accuracy.

Application Area

The LP3981IMM-2.7/NOPB is an ideal choice for a wide range of applications due to its features, compact size and low power operation. It can be used for powering microprocessors, DSPs, FPGAs, memory and other digital loads, as well as in portable electronic devices like laptops, media players and digital audio players. It is also suitable for industrial and automotive applications due to its robust design and high efficiency.

Working Principle

The LP3981IMM-2.7/NOPB works based on a simple control loop method. The input voltage is compared with the reference voltage at the Error Amp and any difference between the two is used to initiate the circuit operation. The Error Amp output is connected to the Gate of the P-MOSFET which then either increases or decreases the output voltage in order to keep it in line with the reference voltage. The amount of current needed to ensure the output voltage is maintained is then controlled by the Gate Driver in order to minimize power loss.

Conclusion

The LP3981IMM-2.7/NOPB is an ideal choice for providing precise voltage regulation and power control in a wide range of applications, such as portable electronic devices, industrial and automotive applications. Its compact size and low power operation makes it incredibly versatile, while its advanced BiCMOS technology, on-chip Error Amp and internal P-channel MOSFET ensure a maximum efficiency and high voltage accuracy. The device\'s working principle, based on a simple control loop system, makes it easy to set up and operate.

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