LP2982IM5-4.0/NOPB

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LP2982IM5-4.0/NOPB is a PMIC (Power Management IC) that belongs to the category of linear voltage regulator.The linear voltage regulator is basically an electronic circuit that maintains a voltage difference between two nodes. It converts a higher input voltage into a lower output voltage which is essential to maintaining proper voltage in various circuits. The LP2982IM5-4.0/NOPB is a version of the popular linear voltage regulator, the 5V Low Dropout Regulator.

Features

The LP2982IM5-4.0/NOPB features several attributes that make it a great choice for powering a variety of electronic devices. It has a low dropout voltage (0.3V), low quiescent current (4μA), low operating current (160mA), and low noise level. It also features a rail-to-rail input/output, short-circuit protection, thermal shutdown, and over-temperature protection. The LP2982IM5-4.0/NOPB can provide a regulated output voltage of up to 5.1V, and it is available in a small 8-pin SOIC package. It is also capable of operating over a wide temperature range of -40°C to +125°C.

Applications

The LP2982IM5-4.0/NOPB is an ideal choice for powering small, demanding devices such as CPUs, digital audio players, PDAs, and smartphones. It can also be used to power 5V communication lines in automotive, computer, and power systems. It is also suitable for powering the core circuits of portable electronic devices, and it is especially well-suited for powering IC memory cards and IC logic circuitries.

Working Principle

The LP2982IM5-4.0/NOPB linear voltage regulator operates on an input voltage that is higher than the desired output voltage.The device then uses a feedback loop to adjust this voltage and make sure it is maintained within a certain range.The feedback loop consists of an error amplifier, a voltage reference, and a P-channel MOSFET. The reference voltage is set by a Zener diode, which is connected between the Gate and Source of the MOSFET. The error amplifier then compares the output voltage with the reference voltage. If the output voltage is lower than the reference voltage, the error amplifier will output a higher voltage, which causes the MOSFET to turn on and increase the output voltage. Conversely, if the output voltage is higher than the reference voltage, the error amplifier will output a lower voltage and the MOSFET will turn off, thus decreasing the output voltage.

Conclusion

The LP2982IM5-4.0/NOPB is an efficient and reliable linear voltage regulator well-suited for powering a variety of electronic devices. It features a low dropout voltage, low quiescent current, low operating current, and low noise level, as well as a rail-to-rail input/output, short-circuit protection, thermal shutdown, and over-temperature protection. The LP2982IM5-4.0/NOPB is ideal for powering CPUs, digital audio players, PDAs, and smartphones, as well as communication lines in automotive, computer, and power systems. Furthermore, its operating principle is based on a feedback loop that ensures that the output voltage is maintained within a certain range.

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