LM2587S-3.3

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The LM2587S-3.3 is a monolithic integrated circuit specifically designed for the fast and efficient conversion of electrical power in portable applications. This device is part of a family of voltage regulators that are well suited to a wide range of voltage regulation tasks, including the increasingly popular applications of DC to DC switching regulators. This article will cover the application field and working principle of the LM2587S-3.3.

The LM2587S-3.3 is a synchronous step-down converter that offers a wide range of adjustable output voltages, making it well-suited for applications where output voltage regulation is necessary. It features an internal 500kHz oscillator and a high current (1.2A) MOSFET switch, allowing for fast switching and high efficiency. The design also includes various protection features, including short-circuit protection and thermal shutdown, helping to ensure safe and reliable operation in all types of applications.

The LM2587S-3.3 is designed for a wide input voltage range, from 4.5V to 40V, and is capable of providing an adjustable output voltage from 0.6V to 3.3V. The device provides up to 90% peak efficiency, allowing for efficient power conversion. The device can also operate in either continuous conduction (CCM) or discontinuous conduction (DCM) mode, allowing for maximum flexibility in power supply design.

The LM2587S-3.3 features many features, making it ideal for a wide range of applications, including automatic LED or LCD display backlight controllers, battery chargers, and DC-DC converters for portable applications. The device is also capable of regulating very low output voltages, making it suitable for many low-voltage applications.

The working principle of the LM2587S-3.3 is based on a switching regulator topology. This means that the device uses a combination of switches and a control circuit to convert a high input voltage to a lower output voltage. The device uses an integrated oscillator to periodically turn the switch ON and OFF, creating an oscillating current at the output. This current is then filtered and regulated to produce a constant output voltage. The device also features an adjustable current limit circuit, allowing for maximum current protection.

The LM2587S-3.3 is an ideal solution for fast and efficient voltage regulation in a wide range of portable applications. Featuring an adjustable output voltage, high efficiency, and protection features, this device is a great choice for those looking for a reliable and efficient power regulator.

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