RT2855ALGQW Integrated Circuits (ICs)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The RT2855ALGQW is a DC/DC switching regulator, designed for in-system voltage regulation application. It is a perfect choice for power supply design that requires high performance, low noise and low external component count. It is also suitable for use in a variety of industrial, automotive and consumer applications.

This device’s primary features include an adjustable switching frequency, output current limit, external enable, input overvoltage protection, power good flag, and output overvoltage protection. The RT2855ALGQW has a switching frequency of up to 5 MHz and is able to handle up to 5A of output current.

Application Field

The RT2855ALGQW can be used in a variety of applications that require a regulated output voltage. These include but are not limited to: portable electronics, LCD monitors and televisions, networking equipment, embedded systems, automotive and industrial control systems, and point of sale equipment.

This device provides an excellent choice for embedded system designers, thanks to its low external component count. The RT2855ALGQW is ideal for applications that require variable output voltage, current-sense feedback, adjustable switching frequency, and output overvoltage protection.

Working Principle

The RT2855ALGQW works on a basic switch-mode power supply (SMPS) topology. The topology used is synchronous buck, meaning that the output voltage is regulated using feedback from the internal synchronous MOSFETs. This device has two MOSFETs: an upper MOSFET and lower MOSFET.

The RT2855ALGQW has two pins for controlling the switching of the internal MOSFETs, called SW and SWB. When the SW is high, the upper MOSFET is turned on, causing the output voltage to rise. When the SW pin is low, the upper MOSFET is turned off and the voltage drops. Similarly, when the SWB pin is high, the lower MOSFET is turned on and the output voltage decreases.

The RT2855ALGQW also has a sync pin to control the switching frequency. This feature allows the user to adjust the switching frequency, which affects the power efficiency of the device. The RT2855ALGQW also features current-sense feedback, which allows the user to control the output current limit.

The RT2855ALGQW also has an enable pin to control the device\'s power state. This pin can be used to disable the device, allowing for a power savings when the device is not actively used. Additionally, the device also has an output overvoltage protection feature, which will protect the connected load from any overvoltage spike.

Overall, the RT2855ALGQW is a perfect choice for designers who are looking for a low-cost, low noise, and high efficiency DC/DC switching regulator with a variety of features. The adjustable switching frequency and current feedback features make it ideal for applications which require variable output voltage and current limit.

The specific data is subject to PDF, and the above content is for reference