S-8880A20-M5T1U

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S-8880A20-M5T1U Application Field and Working Principle

The S-8880A20-M5T1U is an integrated DC-DC switching regulator from Renesas Electronics. It provides a solution for switching power supplies, helping reduce power conversion design time and costs. This device has a wide range of applications, among them those for notebook PCs, servers, telecommunications equipment, networking equipment, and more.

Benefits and Features

The device offers a number of advantages that make it suitable for a variety of applications. Its efficiency is as high as 90%, enabling high performance and power savings. The unit also offers a wide input voltage range starting from 4.5V and a low operating quiescent current of 5mA giving it an extended battery life. The package allows the device to fit into small spaces with its small footprint and low profile of 1.5mm. The S-8880A20-M5T1U is equipped with a built-in FET and an oscillator with programmable soft-start timing. To further improve device performance and make it easier to use, the device has an integrated circuit design feature of a synchronous rectified boost regulator with an adjustable internally regulated output voltage. This makes it well suited for high-voltage snapback switching applications.

ADS-8880 Work Principles

The ADS-8880 device is based on synchronous rectified boost regulators. This type of regulators works by controlling the charging of the inductor, to deliver a constant output voltage despite fluctuating input voltage. When the voltage is high, current is sent from the input to the inductor, via a MOSFET called the high side MOSFET, following the direction of the arrow illustrated on the image. Once the inductor is completely charged, the current is blocked and the inductor starts to discharge its energy slowly through the low side MOSFET. The output of this transfer is the intended output voltage. The frequency of the on and off cycles of the MOSFETs is determined by the oscillator, integrated into the device.

Applications

The S-8880A20-M5T1U is suitable for a wide range of applications. Notebook PCs and servers need stable and reliable power solutions for their multiple integrated circuits, wiring, and peripherals. This device can also be used in telecommunications equipment, networking equipment, medical equipment, imaging/video equipment and industrial instrumentation. It is designed to quickly and reliably provide energy with its excellent switching performance and high efficiency. In addition, the unit is compliant with the European standard EMC directive and works even in high-voltage snapback switching applications. Due to its low operating current, it is also an excellent choice for battery-powered systems, enabling an extended battery life. This device is an ideal choice when it comes to providing clean and reliable power.

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