Current - Output:	100mA
Base Part Number:	LP2950
Supplier Device Package:	DPAK
Package / Case:	TO-252-3, DPak (2 Leads + Tab), SC-63
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	--
PSRR:	--
Current - Supply (Max):	12mA
Current - Quiescent (Iq):	120µA
Series:	--
Voltage Dropout (Max):	0.45V @ 100mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	30V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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Introduction

The LP2950ACDT-5.0G is a low dropout (LDO) voltage regulator, made by Texas Instruments (TI). This is part of the Simple Switcher family of regulators, which is designed for efficient power management in low power systems, emphasizing reduced size and easy use. This regulator enables low quiescent current and low dropout voltage operation, with good accuracy and fast transient response.

Application Field

The LP2950ACDT-5.0G is ideal for applications requiring a wide input voltage range and an adjustable output. It is most commonly used to regulate local voltages in portable applications such as laptops, tablets, and other small electronic devices. These regulators can also be used in other applications that require a reliable, low-noise power supply, such as medical equipment and semiconductor test and measurement equipment.

Working Principle

This LDO voltage regulator is designed with a low quiescent current and low dropout voltage operation. Its wide input voltage range (4.4V to 24V) provides operation over an extended range of voltages and is adjustable, providing the ability to accommodate a variety of output voltage needs.The LP2950ACDT-5.0G consists of two components that accomplish the regulation of the output voltage: an error amplifier and a pass element. The error amplifier senses any changes in the output voltage and adjusts the pass element accordingly, providing a steady output voltage over a wide range of input voltage.The pass element consists of two MOSFETs, one wired as a constant current source and the other as a load switch. The load switch only allows the current through when it is turned on. When the load switch is turned off, the input current is stopped, resulting in the reduction of power to the load. This is the main way the LP2950ACDT-5.0G regulates the output voltage, while the error amplifier senses any changes and adjusts the pass element accordingly.

Conclusion

The LP2950ACDT-5.0G is a low dropout voltage regulator designed for a wide input voltage range, low quiescent current, and low dropout voltage capability. Its adjustable output voltage and fast transient response make it ideal for a wide range of applications, including laptops, tablets, medical equipment, and semiconductor test and measurement equipment. The LP2950ACDT-5.0G\'s innovative design includes the error amplifier and pass element, which permit efficient regulation of the output voltage over a wide range of input voltage.

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