LM2574HVN-15

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The LM2574HVN-15 voltage regulator is a high-efficiency, low-noise, adjustable, pulse-width modulated (PWM) switching regulator. It is capable of supplying current up to 0.8A in a wide range of adjustable output voltages and is also capable of driving a wide range of power-hungry devices. The LM2574HVN-15 is a monolithic integrated circuit housed in a single, compact 8-pin package. The nominal input voltage range is 3V to 40V and the regulated output voltage range is 0.8V to 15V.

The LM2574HVN-15 is designed with a low-noise current-mode, fixed frequency operation and has both differential remote sensing and output voltage trim options. Its features include an improved single loop control for high accuracy regulation and a low quiescent current. It also features an over-temperature and over-current sense, making it an ideal linear regulator for applications that require high efficiency, low output noise and high output current.

The LM2574HVN-15 is highly sought after for its wide range of applications such as portable equipment, automotive electronics and audio amplifiers. In particular, it is ideal for powering microprocessors and logic circuits, as well as other low-power devices that require an adjustable output voltage. Furthermore, the IC can be used to effectively regulate the voltage in applications with multiple output voltages, while also providing a high-efficiency and noise performance.

This IC is suitable for buck, boost and ideally suited for buck-boost converters. It is also easily configured to the individual voltage demands of a particular application. It has an internal PWM frequency oscillator, an on-chip error amplifier, a temperature compensation circuit and an under-voltage/over-voltage sensing circuit that make it a reliable choice for a wide range of applications. Besides its excellent features, the LM2574HVN-15 is easy to configure, making it simple to integrate in system designs.

The working principle behind the LM2574HVN-15 is based on two main stages: the control amplifier and the error amplifier. The output voltage is regulated by the error amplifier, while the control amplifier is used to determine the voltage level. The error amplifier compares the reference voltage to the adjustable feedback voltage, the threshold value is exceeded. The result is that the comparator generates an output voltage, which is then fed to the pulse width modulator. The pulse width is kept constant for the necessary period and hence, maintains the required output voltage level.

The LM2574HVN-15 voltage regulator is designed to be one of the most efficient ICs available in the market, operating with a low quiescent current and providing high accuracy regulation. It is also designed with some other features such as the adjustable current limit and the thermal shutdown protection. With its wide range of applications and features, the LM2574HVN-15 can effectively and accurately regulate the output voltage of systems requiring an adjustable output voltage.

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