MAX8891EXK15+T Integrated Circuits (ICs)

Current - Output:	150mA
Base Part Number:	MAX8891
Supplier Device Package:	SC-70-5
Package / Case:	5-TSSOP, SC-70-5, SOT-353
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	65dB (10kHz)
Current - Quiescent (Iq):	40µA
Series:	--
Voltage Dropout (Max):	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.5V
Voltage - Input (Max):	6V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction
The MAX8891EXK15+T is a linear voltage regulator IC, and as such is a member of the PMIC (Power Management ICs) series of integrated circuits. It is designed to provide a high accuracy three-terminal voltage regulator with features including fast transient response, automatic thermal shutdown, and output voltage shutdown. This article will explore the application field and working principle of the MAX8891EXK15+T.Application Field
The MAX8891EXK15+T is designed for use in computer systems, notebook computers, portable electronics, cellular phones, and other system applications. It is particularly well-suited for applications that require high accuracy voltage regulation and low power operation, such as battery operated appliances and portable devices. It is also suitable for other applications that require a regulated voltage source such as automotive, industrial, and medical electronics.Features
The MAX8891EXK15+T features several key features that make it a great choice for linear voltage regulator applications. It features an adjustable output voltage range from 1.5V to 5.5V, with an accuracy of ±3.3mV over the full operating temperature range. It also includes an adjustable current limit and thermal shut down protection, as well as output voltage disabling to reduce power consumption. The MAX8891EXK15+T also offers low noise operation (25mV peak-to-peak), low quiescent current (2.2µA) and an enable input to control the output voltage. In addition, it can provide up to 150mA of output current, making it well-suited for a variety of applications. Working Principle
The MAX8891EXK15+T is a linear voltage regulator IC, and as such it works by using an internal operational amplifier to compare the input and output voltages. When the output voltage is lower than the reference voltage, the operational amplifier increases the output current, thus increasing the output voltage until it reaches the desired level. When the output voltage is higher, the operational amplifier decreases the output current, thus decreasing the output voltage until it reaches the desired level. The MAX8891EXK15+T also features a current limit and thermal shut down protection. The current limit is designed to prevent the output current from exceeding a predetermined level, while the thermal shut down protection limits the IC to a safe operating temperature. Both of these features allow the IC to operate reliably and safely. Conclusion
The MAX8891EXK15+T is a linear voltage regulator IC, and as such is a great choice for applications that require a high accuracy voltage regulator with fast transient response and low power consumption. Its adjustable output voltage range, low quiescent current, and current limit and thermal shut down protection make it well-suited for a variety of applications, such as portable electronics and automotive, industrial, and medical electronics. Knowing the application field and working principle of the MAX8891EXK15+T will help engineers to make an informed decision when selecting a voltage regulator for their application.

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