LP2980AIM5X-2.5

Current - Output:	50mA
Base Part Number:	LP2980
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	Enable
PSRR:	63dB (1kHz)
Current - Supply (Max):	1.2mA
Current - Quiescent (Iq):	95µA
Series:	--
Voltage Dropout (Max):	0.22V @ 50mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.5V
Voltage - Input (Max):	16V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Not For New Designs
Packaging:	Tape & Reel (TR)

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Introduction to LP2980AIM5X-2.5

LP2980AIM5X-2.5 is a low dropout linear voltage regulator. This voltage regulator is designed for battery-based applications. It is ideal for use in portable electronic devices such as cellular phones, PDAs, MP3 players, digital cameras, and other digital devices.

Overview

This linear voltage regulator is designed to adjust output voltage from a minimum of 2.5 volts to a maximum of 5.5 volts. It is efficiently capable of supplying an output current of up to 500mA, ensuring that most typical digital applications are powered. LP2980AIM5X-2.5 allows a maximum drop-out of 250 mV when operating at the maximum output current of 500mA, and keeps low level noise, providing clean and low noise power.It has various features such as over-current protection, short-circuit protection, and over-temperature protection, making it suitable for data transmission and battery management systems. This voltage regulator also features a wide operating temperature range of -40°C to +125°C, allowing it to be used in harsh environments.

Application Field

Due to its wide range of features, LP2980AIM5X-2.5 is suitable for use in a variety of applications. These include portable battery-powered devices, power-sensitive systems, data transmission and management systems, battery charging systems and automotive voltage regulators.The LP2980AIM5X-2.5 is also suitable for use in various digital circuits such as microprocessors, digital signal processors, FPGAs, microcontrollers and analog to digital converters. It provides low noise power with minimal disturbance, ensuring that circuit operations and data transmission are not affected.

Working Principle

The LP2980AIM5X-2.5 operates as a three-terminal linear voltage regulator. It uses a P type channel MOSFET device as the pass element and an SCS (Shuttle Current Sink) as the current sensing device. The output voltage is set by an internal voltage reference.When the voltage at the input of the regulator is greater than that at the output, the MOSFET is forced into conduction. This allows a current to flow from the input to the output, thus providing the required output voltage regulation. If the voltage at the output of the regulator is greater than the voltage at the input, the MOSFET will not be forced into conduction and the regulator will shut down, thus providing over-voltage protection.The SCS is used to detect and limit the amount of current that flows through the regulator. When the output current reaches the limit set by the SCS, it will cut-off the current flow, thus protecting against an excessive overload.

Conclusion

LP2980AIM5X-2.5 is a three-terminal linear voltage regulator designed for use in battery-based applications. It offers a wide range of features such as over-current and short-circuit protection, a wide operating temperature range and low noise power. Due to its wide range of features, it is suitable for use in a variety of portable battery-powered devices, data transmission and management systems as well as automotive voltage regulators. The working principle of this regulator involves the use of a MOSFET device as a pass element and an SCS as a current sensing device.

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