LP2951ACM

Current - Output:	100mA
Base Part Number:	LP2951
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	Enable
PSRR:	--
Current - Supply (Max):	14mA
Current - Quiescent (Iq):	120µA
Series:	--
Voltage Dropout (Max):	0.6V @ 100mA
Voltage - Output (Max):	29V
Voltage - Output (Min/Fixed):	1.24V (5V)
Voltage - Input (Max):	30V
Number of Regulators:	1
Output Type:	Adjustable (Fixed)
Output Configuration:	Positive
Part Status:	Not For New Designs
Packaging:	Tube

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Introduction

The LP2951ACM is a positive-voltage low-dropout linear regulator, developed for use in a wide range of applications.The device\'s low-dropout (LDO) feature allows it to be used in systems which have very limited power supply headroom.LP2951ACM has a wide input voltage range of 2.7V to 16V, adjustable output voltage range and voltage accuracy specifications. The device also offers excellent operating efficiency and transient response performance, as well as low noise operation during normal and dropout conditions.

Application

The LP2951ACM can be used in battery-powered portable applications, such as for cell phones, PDAs, digital cameras and PDAs, as well as for lighting, set-top boxes and other consumer and industrial applications. The adjustable output voltage of the device allows it to be used in numerous applications over a wide range of input and output voltages. It is also suitable for power management in automotive applications, including automotive audio systems and fuel injection systems.

Working Principle

The LP2951ACM is a low-drop linear regulator and works by using a voltage reference and a load-balancing circuit to maintain a constant output voltage. The integrated reference voltage is compared with a resistor-divider set placed on the output line. If the output voltage drops below the reference voltage, the regulator will draw more current from the input and increase the output voltage. Similarly, if the output voltage rises above the reference voltage, the regulator will draw less current from the input and reduce the output voltage. In this way, the regulator works to maintain a constant output voltage.

Advantages of LP2951ACM

LP2951ACM offers a wide input voltage range of 2.7V to 16V, adjustable output voltage ranges from 1.2V to 15V, as well as excellent operating efficiency and transient response performance. Additionally, the LP2951ACM has a lower output voltage dropout voltage than other LDOs, allowing for its use even in low-headroom systems. Its low noise operation during both normal and dropout conditions is a further benefit, making it suitable for noise sensitive circuits.

Conclusion

The LP2951ACM is a low-dropout linear regulator and is ideal for applications such as cell phones, PDAs, digital cameras, automotive audio systems and fuel injection systems. It features a wide input voltage range and adjustable output voltage range, as well as excellent efficiency and low noise operation. All these features make the LP2951ACM a great choice for battery-powered portable and automotive applications.

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