LP2951CSDX

Current - Output:	100mA
Base Part Number:	LP2951
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:	--
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Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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LP2951CSDX Application Field and Working Principle LP2951CSDX is a low-power, high-current, linear-regulator voltage regulator integrated circuit (IC) with a very low dropout voltage. Using an external pass transistor and low-ESR capacitors, it can provide a constant output voltage over a wide input voltage range. The LP2951CSDX is widely used in industrial, automotive, consumer and other application fields.Application Field of LP2951CSDX LP2951CSDX is generally used in industrial, automotive, consumer, and other applications. Industrial application fields include industrial automation, medical device and equipment, HVAC systems, automotive electronics, and industrial controllers. It is also widely used in power supply and power management systems in consumer applications, computer systems and peripherals, home equipment, and audio systems.Advantages of LP2951CSDX LP2951CSDX has many advantages. It is capable of providing reliable power delivery while consuming very low power. It provides a very low dropout voltage, allowing it to be used in systems with a wide range of input voltage. It also features minimal over-temperature protection and has a very low noise output. Furthermore, it is pin compatible with other voltage regulators, making it easy to design and customize for a range of applications.Working Principle of LP2951CSDX LP2951CSDX operates using an internal pass transistor and an external PNP power transistor to regulate the input voltage. The external PNP transistor is used to pull down the output voltage when the input voltage is higher than the reference voltage. The internal pass transistor acts as an error amplifier to adjust the output voltage according to the voltage reference.An external capacitor placed across the output node serves to reduce output ripple. The oscillator frequency of the LP2951CSDX is set to 3kHz by a resistor placed between the ISET terminal and GND. When the voltage at the output node is higher than the reference voltage, the LP2951CSDX will begin to limit the current to the output node by turning off the internal pass transistor.This ultra-low-dropout voltage regulator (LDO) has a built-in over-temperature protection circuit. This circuit will turn off the internal pass transistor if the chip internal temperature exceeds the maximum safe operating temperature.ConclusionLP2951CSDX is an ultra-low-dropout linear-regulator voltage regulator with a very low dropout voltage. It is capable of providing reliable power delivery while consuming very low power, and features a built-in over-temperature protection circuit. It is widely used in industrial, automotive, consumer and other application fields. Its working principle is based on the internal pass transistor and the external PNP power transistor, which pulls down the output voltage when the input voltage is higher than the reference voltage. With its low-power consumption and wide input voltage range, LP2951CSDX is an ideal solution for a wide range of applications.

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