LP2989AILDX-3.0

Current - Output:	500mA
Base Part Number:	LP2989
Supplier Device Package:	8-WSON (4x4)
Package / Case:	8-WDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	Enable
PSRR:	60dB (1kHz)
Current - Supply (Max):	9mA
Current - Quiescent (Iq):	175µA
Series:	--
Voltage Dropout (Max):	0.65V @ 500mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3V
Voltage - Input (Max):	16V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction to LP2989AILDX-3.0

The LP2989AILDX-3.0 is a low-dropout linear voltage regulator (LDO) designed and manufactured by Texas Instruments. It is a 3.0V fixed voltage regulator ideal for supplying power to a variety of electronic applications requiring precise regulation of current and voltage. This device has a wide input voltage range of 4.5V to 20V and an output voltage accuracy of ±2%. It is available in a miniature 8-pin DIP package and has low quiescent current of 150μA. Furthermore, it includes both over-current and short-circuit protection.

Features

The LP2989AILDX-3.0 offers several features to ensure precise regulation of current and voltage, including:• Wide input voltage range of 4.5V to 20V• Output voltage accuracy of ±2%• Low quiescent current of 150μA• Over-current and short-circuit protection• Output current of up to 300mA• Internal thermal-shutdown protection• TTL compatible enable and shutdown pins

Application Field

The LP2989AILDX-3.0 can be used in a wide range of applications requiring precise current and voltage regulation. These include systems such as:• Computer peripheral and networking equipment• Digital cameras and camcorders• Cellular phones and personal media players• Automotive applications and personal navigation devices

Working Principle

The LP2989AILDX-3.0 is a low-dropout linear voltage regulator which works by employing a series of transistors, resistors, and capacitors to form a voltage divider circuit. When the input voltage is applied to the device, the transistors and resistors form a voltage divider network which regulates the input voltage and produces an output voltage that is precise, stable, and safe for the connected components.The device also includes a proportional current source, which acts as a current limiter to ensure that the maximum output current is not exceeded and the device remains in a safe and stable operating condition. Additionally, the device has built-in over-current protection, which will shut down the device when the current limit is exceeded and reset the device when the current is brought back below the limit.Finally, the device also includes a thermal-shutdown feature, which will shut down the device and reset when the internal temperature of the device exceeds a predetermined level.

Conclusion

The LP2989AILDX-3.0 is a low-dropout linear voltage regulator designed by Texas Instruments and ideal for supplying power to a variety of applications that require precise current and voltage regulation. This device offers a wide input voltage range of 4.5V to 20V and includes various features such as over-current, short-circuit and thermal-shutdown protection. Additionally, it works by employing a series of transistors, resistors, and capacitors to form a voltage divider network which produces an accurate, stable and safe output voltage. The LP2989AILDX-3.0 is an ideal voltage regulator for computer peripheral and networking equipment, digital cameras and camcorders, cellular phones and personal media players, as well as automotive applications.

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