S-1721A2833-M6T1G

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The S-1721A2833-M6T1G is an adjustable linear voltage regulator which operates on a bilevel buck-boost topology. It is designed to provide adjustable power supply outputs (V OUT ) ranging from 2.25V to 4.5V. This device is ideal for applications requiring flexibility in voltage output range and robust design to withstand extreme conditions and high-power requirements.

Application Field

The S-1721A2833-M6T1G adjustable linear voltage regulator is a versatile and highly efficient solution suitable for applications requiring a wide input voltage range (6V to 28V) and low output voltage range (2.25V to 4.5V). Typical applications include automotive and industrial control systems, power supplies for electronic equipment, LED lighting, and digital audio and video devices.

Working Principle

The S-1721A2833-M6T1G operates on a bilevel buck-boost topology. The device consists of two buck stages connected in series, an integrated driver and controller, and two LM2613-1 boost stages connected in parallel. The device provides smooth control of V OUT over a wide range of input voltages. A low output resistance makes the device suitable for high load applications.

The device operates in buck-boost or buck-boost and bypass (BBB) modes. In the buck-boost mode, the LM2613-1s operate in parallel, providing a constant and adjustable V OUT in the range from 2.25V to 4.5V. The device automatically switches to bypass mode when the output voltage exceeds the preset V OUT and the output current is below the operating limit. This feature prevents thermal derating caused by overvoltage when the output current is limited.

An advanced digital control system with constant on-time current-mode control eliminates the need for an external voltage reference to set V OUT . The device automatically sets the output voltage based on an internal reference voltage, allowing precise precision and stability in every application.

The S-1721A2833-M6T1G has built-in protection features, including over-current, short-circuit, and over-temperature protection. The device also offers a soft-start and adjustable current limiting, providing additional safety and over-trip protection during operation.

In addition to its versatile and robust design, the S-1721A2833-M6T1G boasts high efficiency and low noise operation. Thanks to its low power consumption and low noise characteristics, the device is ideal for battery-powered applications, making it an attractive choice for a variety of applications.

The S-1721A2833-M6T1G adjustable linear voltage regulator is a reliable and efficient solution for applications requiring adjustable output voltage with minimal effort. With its wide input voltage range and low output voltage range, this device is well-suited for automotive and industrial control systems, power supplies for electronic equipment, LED lighting, and digital audio and video devices. Its low output resistance, soft-start feature, and on-time current-mode control make the device a great choice for high-load applications. Finally, its built-in protection mechanism and superior efficiency make it well-suited for battery-powered devices.

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