LM2931ADT-5.0RKG

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LM2931ADT-5.0RKG linear voltage regulators are designed to be used as a low-cost, energy efficient, low-dropout (LDO) regulator for applications such as communications, consumer electronics and computing. The LM2931ADT-5.0RKG uses a variety of voltage inputs such as those found in wall adapter and other unregulated power sources. The output voltage is adjustable between 2.2V and 5.5V, making it suitable for use in a number of different systems.

Application Field

LM2931ADT-5.0 RKG linear voltage regulators are typically used in applications where precise regulation is required, such as in portable electronics and medical equipment where reliability, power efficiency, long battery life and small size are critical. The LM2931ADT-5.0RKG is also an excellent solution for a variety of applications requiring the low input-to-output voltage conversion, such as industrial equipment, automotive electronics and solar energy applications.

Working Principle

The LM2931ADT-5.0RKG linear voltage regulator works on the principle of voltage regulation. Regulation is accomplished by sensing the voltage at the output of the regulator and adjusting the power delivered to the load in order to maintain the desired output voltage. The LM2931ADT-5.0RKG uses an external voltage divider to sense the output voltage, and an internal reference voltage to develop a reference signal. This reference signal is compared to the output voltage and the result is used to control the base current of an internal P-channel MOSFET, which in turn controls the input current, and thus the output voltage. The current that flows through the regulator’s external components is used to adjust the base current of the P-channel MOSFET in order to maintain the desired output voltage.

The LM2931ADT-5.0RKG features low quiescent current, high PSRR, low dropout operation and fast transient response. The LM2931ADT-5.0RKG also features low input voltage (1.8V minimum operation), low output voltage ripple and full protection against current overload and short circuit conditions. The LM2931ADT-5.0RKG also comes with a wide set of safety features including automatic restart, over-voltage protection and thermal shutdown.

Conclusion

The LM2931ADT-5.0RKG linear voltage regulator is an ideal solution for a variety of applications requiring low cost, energy efficiency and low-dropout regulation. The LM2931ADT-5.0RKG features low quiescent current, high PSRR, low dropout operation and fast transient response. It also features low input voltage (1.8V minimum operation), low output voltage ripple and full protection against current overload and short circuit conditions. With a wide set of features, the LM2931ADT- 5.0RKG is an excellent choice for applications requiring precise voltage regulation.

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