LP3874ET-2.5/NOPB

Current - Output:	800mA
Base Part Number:	LP3874
Supplier Device Package:	TO-220-5
Package / Case:	TO-220-5 Formed Leads
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	Enable
PSRR:	73dB ~ 57dB (120Hz)
Current - Supply (Max):	15mA
Current - Quiescent (Iq):	9mA
Series:	--
Voltage Dropout (Max):	0.35V @ 800mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.5V
Voltage - Input (Max):	7V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tube

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LP3874ET-2.5/NOPB Application Field and Working Principle
Power Management IC (PMIC) is an important component in any electronic device as it is used to regulate and manage the power supply. The LP3874ET-2.5/NOPB is a voltage regulator which is a part of the PMIC family. This device is specifically engineered to help design engineers mange their power needs.
The LP3874ET-2.5/NOPB is a low drop-out regulator (LDO), which means that it can efficiently maintain the voltage output with few voltage drops. It belongs to the family of linear voltage regulators, meaning that it regulates the output voltage of the power supply module using linear methods, as opposed to switching methods. It also employs a circuit design that provides exceptional EMI performance, which is important for supporting high-performance devices such as smartphones and tablets.
The LP3874ET-2.5/NOPB is a highly efficient regulator with a high current capability. It has an input range of 3.3V to 24V, and an output voltage range of 0.8V to 16V, which is adjustable with an external resistor. It offers a guaranteed low-noise performance (<10µV RMS) at the no-load condition. Moreover, the advanced loop control provides a fast transient response time. The maximum output current is 700mA, making it suitable for various power management solutions. The quiescent current draw is typically 0.42mA, which reduces power consumption and overall system costs.
The LP3874ET-2.5/NOPB also enables the switching frequency to be adjusted, making it ideal for low-emissions applications. It also includes other features such as a built-in low-pass filter and an automatic frequency foldback to keep the switching frequency low and reduce the power dissipation. This makes the regulator suitable for low-EMI applications, since the switching frequency is usually reduced to meet regulatory requirements.
The LP3874ET-2.5/NOPB offers an adjustable soft-start feature, which can be adjusted from 0µs to 833µs with an external resistor, enabling faster system startup and better overall performance. It supports external bypass and shutdown control pins, which is useful for design engineers to manually control the circuit. Moreover, it offers a thermal foldback feature, which limits the output current in case of over-temperature conditions.
In conclusion, the LP3874ET-2.5/NOPB is a highly integrated, low-noise regulator with excellent features for power management. It can maintain a constant low-noise output voltage and offer current protection from over-temperature conditions. It provides high power efficiency with low power dissipation, and is suitable for both mobile and stationary applications.

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