LP2989AIMM-3.3/NOPB

Current - Output:	500mA
Base Part Number:	LP2989
Supplier Device Package:	8-VSSOP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
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):	3.3V
Voltage - Input (Max):	16V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to LP2989AIMM-3.3/NOPB

The LP2989AIMM-3.3/NOPB is a voltage regulator manufactured by Texas Instruments. It belongs to the family of linear regulators, and it is specifically designed for power management solutions.

Application Field

This voltage regulator is developed for use in various applications. These include but are not limited to: mobile and portable designs, home electronics, system low-noise, and telecommunication systems. Additionally, it is ideal for automotive designs due to its high voltage regulation accuracy and output current accuracy over a wide range of temperatures. The LP2989AIMM-3.3/NOPB is a low drop out (LDO) linear regulator that is capable of supplying up to 200 mA of output current. It features a very low quiescent current of 10 µA that does not degrade with load, and it can regulate accurately at very low input voltages. It has an operating temperature range from -40°C to +125°C, making it an excellent choice for more extreme applications. Other features of the LP2989AIMM-3.3/NOPB include fast transient response time which minimizes output voltage ripple, tight line and load regulation, low ground current, and excellent noise rejection.

Working Principle

The LP2989AIMM-3.3/NOPB is a three-terminal positive voltage regulator. It functions using a voltage divider network, with a voltage reference connected across the lower and upper dividers. An internal amplifier compares the output voltage to the voltage reference, and adjusts the base of a series pass transistor accordingly. This series pass transistor is connected in series between the input and output nodes, and is controlled by the output of the amplifier. The transistor is used to regulate the amount of current flowing from the input to output, and thus maintain the predetermined output voltage. The LP2989AIMM-3.3/NOPB is designed to be stable with a minimum capacitive load of 10 µF and a maximum capacitive load of 1500 F.

Conclusion

The LP2989AIMM-3.3/NOPB is a three-terminal positive voltage regulator designed for providing a regulated output voltage with very low voltage drop. It has an operating temperature range from -40°C to +125°C, with fast transient response time which minimizes output voltage ripple and tight line and load regulation. This voltage regulator is ideal for a range of applications including but not limited to mobile and portable designs, home electronics, system low-noise, and telecommunication systems. Additionally, due to its high voltage regulation accuracy and output current accuracy over a wide range of temperatures, it is suitable for automotive designs as well.

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