LP2987AILDX-5.0/NOPB

Current - Output:	200mA
Base Part Number:	LP2987
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:	65dB (1kHz)
Current - Supply (Max):	3.7mA
Current - Quiescent (Iq):	120µA
Series:	--
Voltage Dropout (Max):	0.35V @ 200mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	16V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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LP2987AILDX-5.0/NOPB Application Field and Working Principle

Introduction

The LP2987AILDX-5.0/NOPB is a type of low dropout (LDO) voltage regulator. It is a linear voltage regulator, which is a type of power management integrated circuits (PMICs) specifically focused on voltage regulation. Linear voltage regulators help maintain and regulate the supply voltage to other components or devices by wider operating temperature ranges, lower noise and greater current capabilities. This voltage regulator is usually used to provide an auxiliary power supply for microcontrollers, processor core power supply, DSP, FPGA and other circuits that require a clean 3.3V power supply, although more applications may exist.

Operating Principle

The LP2987AILDX-5.0/NOPB is a two terminal device with an input and output pin. It will typically receive an input voltage from 4.5V to 40V, and in return the output voltage is adjustable from 0.8V to 7V. The output also has an accurate voltage range of 0.5V to 5V, with maximum output current of 180 mA. This voltage regulator has a minimum dropout voltage of 370 mV.Its working principle can be explained by the following steps. When the input voltage is lower than the desired output, an internal control circuit switches the voltage regulator into an “Enable” mode, allowing the device to operate. The voltage regulator then regularly monitors the output voltage through its feedback pin, checking to make sure that it is within the intended range. Depending on the input and output voltage levels, the voltage regulator will adjust the amount of current entering the output pin, helping to regulate the output voltage. This process continues every cycle, until adjustments are no longer necessary.

Key Features and Benefits

The LP2987AILDX-5.0/NOPB is a very reliable and efficient voltage regulator, providing an ideal solution for applications where accurate and consistent voltage regulation is necessary. This voltage regulator provides a variety of key features and benefits. An important feature of the LP2987AILDX-5.0/NOPB is its low quiescent current. This low current allows the LDO to maintain its regulating capability while consuming less than 2mW of power. On top of that, it has a minimum load current of only 0.5mA, reducing the effect of load transients on the regulator performance.This voltage regulator also has a fast circuit response time. In less than 50us, it can turn itself on or off, depending on the input and output voltage levels. In addition, it has a wide range of built-in protection features to guard against pre-bias, reverse battery and thermal overload. The pre-bias protection feature avoids inrush current and protects the output from overvoltage, while the reverse battery protection allows the device to be installed for either a positive or a negative voltage without damage to the device. The thermal protection circuitry prevents catastrophic failure from occurring due to overtemperature conditions, ensuring the safe operation of the device.Finally, the LP2987AILDX-5.0/NOPB is highly flexible, offering a wide range of output voltages and current limiting.

Applications

The LP2987AILDX-5.0/NOPB is an excellent voltage regulator for a variety of applications. It is often used to provide a clean 3.3V power supply for microcontrollers, processor core power supplies, DSPs, FPGAs, and other circuits. Its fast response time and wide range of protection features make it suitable for use in automotive applications, such as electronic control units (ECUs) and vehicle power systems. It is also used in communication systems, industrial control systems, and consumer electronics.

Conclusion

The LP2987AILDX-5.0/NOPB is a great example of a linear voltage regulator, allowing precise voltage regulation and a wide range of adjustable input and output voltages. It offers a variety of features, including low quiescent current, fast response time, and various protection features. This makes the LP2987AILDX-5.0/NOPB ideal for use in automotive, communication, industrial, and consumer applications where consistent and reliable performance is required.

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