LP3893ET-1.8/NOPB

Current - Output:	3A
Base Part Number:	LP3893
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, Under Voltage Lockout (UVLO)
Control Features:	Enable
PSRR:	80dB ~ 65dB (120Hz ~ 1kHz)
Current - Supply (Max):	8mA
Current - Quiescent (Iq):	30µA
Series:	--
Voltage Dropout (Max):	1V @ 1A
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.8V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tube

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The LP3893ET-1.8/NOPB is a low-dropout (LDO) linear regulator that is highly-efficient, requiring only a 1.8V input. This device has many applications in a variety of industries, from consumer electronics, mobile communications, and automotive, to telecommunications and network infrastructure. In this article, we will discuss the application field, working principle, and features of this device.

Application Field

The LP3893ET-1.8/NOPB is a low-dropout linear regulator, meaning that it requires only a 1.8V input. As a result, it is highly-efficient and offers a wide variety of features, making it ideal for a variety of applications. It is perfect for a range of automotive and mobile applications, where the low input voltage makes this device an ideal choice. Additionally, it is suitable for industrial applications, where its high output current capability, low dropout voltage, and on-chip thermal protection make it an ideal choice. It is also particularly suitable for network infrastructure, as it is capable of providing power rails for Ethernet (10/100/1000) transceivers.

Working Principle

The LP3893ET-1.8/NOPB works on a simple principle. It uses a differential amplifier circuit with an internal error amplifier and two external resistors to form a resistive divider. This divider, along with a reference voltage, sets the output voltage. When the output voltage deviates from the preset level, the error amplifier varies its output current, which affects the negative feedback control loop, causing the output voltage to return to the set point.

Features

The LP3893ET-1.8/NOPB has a wide range of features that make it a versatile component for many applications. It has a low quiescent current of less than 100nA, a wide input voltage range of up to 2.6V, a high output current capability of up to 500mA, and a low dropout voltage of less than 1.8V. Additionally, the device features an on-chip thermal protection, which helps protect the device from excessive temperature.The LP3893ET-1.8/NOPB is a highly-efficient, low-dropout linear regulator, which makes it an ideal choice for automotive, industrial, and mobile applications. Its low quiescent current, wide input voltage range, high output current capability, and low dropout voltage make it an ideal choice for a variety of applications. The device also offers an on-chip thermal protection feature, making it suitable for network infrastructure applications.

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