LP5951MG-2.5

Current - Output:	150mA
Base Part Number:	LP5951
Supplier Device Package:	SC-70-5
Package / Case:	5-TSSOP, SC-70-5, SOT-353
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	Enable
PSRR:	60dB ~ 50dB (100Hz ~ 10kHz)
Current - Supply (Max):	70µA
Current - Quiescent (Iq):	55µA
Series:	--
Voltage Dropout (Max):	0.35V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.5V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

LP5951MG-2.5 is a voltage regulator from Texas Instruments, which belongs to the family of linear voltage regulators. This voltage regulator is designed for portable applications that require good efficiency, small size and high precision. It offers a wide input voltage range and offers excellent regulation accuracy and allows the current output to be adjustable.

Application Fields

LP5951MG-2.5 is widely used in industrial, automotive, medical and other fields. For example, it can be used in industrial field to provide power supply to various small devices, in automotive field to provide power supply to various navigation systems, in medical field to provide power supply to various medical instruments and so on.

Features

This voltage regulator has some features which makes it suitable for applications requiring a high level of accuracy, such as:

• Input voltage range up to 15 V.
• Output adjustable with the use of a single external resistor.
• Excellent input/output ripple rejection.
• Low quiescent current (Very low power consumption).
• Operating temperature ranges from -40 to +125°C.
• Low output noise (1.2 mV peak-peak).
• Voltage output accuracy of only 0.7%.

Applications

LP5951MG-2.5 can be used in a wide range of applications and is suitable for use in both commercial and industrial applications. These applications include the following:

• Home appliances and electronic devices.
• Automotive systems.
• Medical equipment.
• Communication systems.
• Industrial control systems.
• Security systems.
• Instrumentation systems.

Working Principle

LP5951MG-2.5 adopts an efficient linear regulator design with a feedback loop. The device rectifies the input voltage and uses a voltage divider for the feedback circuit to detect the output voltage. The voltage divider is formed by an internal voltage reference and a resistor, which will change the output voltage according to the resistor setting.The linear regulator works by using a pass element, in this case a P-MOSFET (field effect transistor) to regulate the output voltage. The P-MOSFET is controlled by a signal from the control circuit. The control circuit, or error amplifier, monitors the output voltage and compares it to the reference voltage. When the output voltage reaches the reference voltage, the error amplifier turns off the P-MOSFET, which stops the flow of current, thus regulating the output voltage.

Conclusion

LP5951MG-2.5 is a high-performance linear voltage regulator from Texas Instruments which is designed for portable applications that require good efficiency, small size, and high precision. It is widely used in industrial, automotive, medical and other fields. The voltage regulator has features such as wide input voltage range, excellent regulation accuracy, and adjustable current output, making it suitable for applications requiring a high level of accuracy. The device adopts an efficient linear regulator design with a feedback loop, which includes a voltage divider, a P-MOSFET, and an error amplifier.

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