LP2987AIM-3.8/NOPB

Current - Output:	200mA
Base Part Number:	LP2987
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:	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):	3.8V
Voltage - Input (Max):	16V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tube

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Introduction

The LP2987AIM-3.8/NOPB is a low-dropout linear regulator designed for use as a power management integrated circuit (PMIC). It is part of the National Semiconductor LP2987 series of voltage regulators. It is ideal for point-of-load applications or where small amounts of precise voltage regulation is required.

Overview

The LP2987AIM-3.8/NOPB is a low noise, low dropout linear regulator with a fixed output voltage of 3.8 volts and a current limit of 600mA. It has a temperature range of operating range of -20°C to 70°C and is available in an 8 lead MSOP package. The input voltage range of the part is 3.1V to 24V. It features an on/off enable pin, current limitation protection and thermal protection.

Features

The major features of the LP2987AIM-3.8/NOPB PMIC is as follows:* Low dropout of 200mV at maximum load current* Low No Load Current of 4µA* Short-circuit and over-temperature protection* Large operating temperature range of -20°C to 70°C* Low output voltage noise of 20mVpp* On-board resistor for feedback voltage selection* Adjustable output voltage available (optional)* Available in leaded, 8-pin MSOP package

Application Field

The LP2987AIM-3.8/NOPB is a versatile PMIC which is suitable for a wide range of applications. It can be used in automotive systems, digital power supplies, portable electronics and computer peripherals.The LP2987AIM-3.8/NOPB can be used to power micro-controllers and ASICs, providing an accurate, low noise, high efficiency voltage source. It is ideal for modern digital systems which require high levels of accuracy and precision. It is also suitable for use in battery-powered applications, where low power consumption is a priority.

Working Principle

The LP2987AIM-3.8/NOPB is a linear voltage regulator IC. This means that the output voltage is regulated by varying the amount of current that flows through the internal circuitry of the regulator.The LP2987AIM-3.8/NOPB is made up of an input voltage regulator, an output voltage amplifier and a series of MOSFETs connected at the input and output. The input voltage regulator provides a constant voltage to the amplifier. The output voltage amplifier adjusts the output voltage based on a feedback signal. The feedback signal is generated by measuring the output voltage of the regulator and comparing it to the set point.The MOSFETs that are connected to the input are used to regulate the current drawn from the input voltage source. This ensures that the regulator is able to supply the required amount of current to the load, while keeping the input current within the specified limits.Finally, the LP2987AIM-3.8/NOPB has a useful on/off enable pin which is used to control the regulator’s power-on sequence. This pin can be used to provide additional protection to the regulator in case of a system overload.

Conclusion

The National Semiconductor LP2987AIM-3.8/NOPB is a low-dropout linear regulator suitable for a wide range of applications. It features high performance, low noise and low dropout characteristics that make it an ideal choice for power management in a variety of applications. Its on-board regulator and MOSFETs make it highly efficient and reliable. The LP2987AIM-3.8/NOPB is a great choice for anyone in need of accurate voltage regulation with minimal power consumption.

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