LP2982AIM5-5.0/NOPB

Introduction to LP2982AIM5-5.0/NOPB

The Texas Instruments LP2982AIM5-5.0/NOPB is an ultra low dropout (ULDO) linear regulator with an adjustable output voltage of 5.0V that is designed for both portable and non-portable applications. This integrated device combines all the features necessary for regulated power supply solutions, including high-accuracy voltage regulation, low-noise operation, fast transient response, and high power-efficiency. This article will discuss the application field and working principle of the LP2982AIM5-5.0/NOPB.

Applications

The LP2982AIM5-5.0/NOPB is used in a variety of applications, including portable medical-grade electronics, automotive electronics,industrial and instrumentation equipment, set-top boxes, servers, and AV receivers. As ultra low dropout linear power solutions for portable products, the LP2982AIM5-5.0/NOPB can be used to power low-noise circuits that require high accuracy or a determined level of variability in the supply voltage. The device also features fast transient response and a high power efficiency that ensure reliable and consistent performance in both portable and non-portable applications.

Working Principle

The LP2982AIM5-5.0/NOPB is a low-noise ULDO linear regulator that uses a PNP power transistor as a pass element. The regulator uses two transistors to control the output voltage. The first transistor operates in the conventional linear regulator configuration and is a depletion-mode MOSFET. The second transistor is a PNP that is biased by an internal current source to establish the output current limit. This current source is connected to the PNP\'s base terminal, which sets the output voltage. When the voltage drop across the PNP is within a predetermined range, the output current is limited.

The LP2982AIM5-5.0/NOPB also features an integrated over-current protection circuit that limits the output current if the load becomes excessive, and an over-temperature protection circuit that shuts down the device in the event of excessive heating. This integrated device also features a wide input voltage range of 3.0V – 20.0V and a dropout voltage of only 130mV at 5A.

Conclusion

The Texas Instruments LP2982AIM5-5.0/NOPB is a low-noise ULDO linear regulator with an adjustable output voltage of 5.0V that is designed for both portable and non-portable applications. This device offers a wide input voltage range, fast transient response, and high power efficiency. By integrating over-current and over-temperature protection circuitry, the LP2982AIM5-5.0/NOPB ensures reliable and consistent performance in a variety of application fields.