L7987

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PMIC - Voltage Regulators - DC DC Switching Regulators have been a necessary factor of our electronics industry over the years. One of the most popular models of DC DC switching regulators is the L7987, which has applications in various sectors, such as automotive and industrial equipment. This article will explain the application fields and working principles of the L7987 regulator.

The L7987 is an improved version of the original DC DC switching regulator and is able to provide higher efficiency than the previous generations. It is an integrated voltage regulator that offers step down voltage conversion capability with a wide input voltage range from 2.7V to 60V. The regulator can be used for a variety of applications, including automotive, industrial control, motor control, and power management. The L7987 includes a wide range of features such as adjustable output voltage, current limitation, soft start, and a thermal protection circuit.

One of the key advantages of the L7987 regulator is its high efficiency. It is designed to operate at high efficiency levels, up to 95%, which makes it suitable for a range of applications. The operating frequency of the regulator is adjustable, allowing users to adjust it according to the requirements of their applications. The thermal protection circuit prevents the regulator from being damaged due to high temperatures, ensuring safety and reliability.

In terms of its working principle, the L7987 Switching regulator uses a pulse width modulation control scheme as its main operational principle. Firstly, the input voltage is converted into a square wave signal, which is then modulated according to the requirements of the user. This modulated signal is then used to control the output voltage by switching a large capacitor on and off at a steady rate, allowing the voltage to be reduced or increased according to the user’s demands. This method also allows for higher efficiency, as the capacitor can be charged and discharged rapidly. The adjustable operating frequency of the regulator also helps to reduce noise and improve the efficiency of the regulator.

The L7987 regulator is available in a variety of packages and formats, making it suitable for a range of applications. It is available in both through-hole and surface mount packages, and in single and dual output configurations. The L7987 also supports a wide range of output voltages, from 1.2V to 60V, making it a versatile choice for various systems. The regulator also includes a wide range of protection features, such as over current, over voltage, and over temperature protection, making it suitable for use in a range of industrial and automotive applications.

To summarize, the L7987 has been designed to be a highly efficient and reliable DC DC switching regulator. It is an improved version of the original DCDC regulator and offers high efficiency up to 95%, making it suitable for a variety of applications. The regulator also has an adjustable operating frequency, allowing users to adjust it according to their requirements, and a wide range of protection features, making it suitable for use in both industrial and automotive systems.

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