STMicroelectronics

AST1S31PUR  

DC Switching Voltage Regulators

AST1S31PUR Description

The AST1S31PUR is a high-performance DC switching voltage regulator designed by STMicroelectronics. This regulator is part of the DC Switching Voltage Regulators category and is known for its robust performance and versatility. The AST1S31PUR features an adjustable output type, making it suitable for a wide range of applications that require precise voltage regulation. It operates within an input voltage range of 2.8V to 4V and can deliver a maximum output current of 3A. The regulator's output voltage is adjustable from 0.8V to 4V, providing flexibility in power management solutions.

The AST1S31PUR employs a buck topology, which is highly efficient for converting higher input voltages to lower output voltages. Its switching frequency is set at 1.5MHz, allowing for fast transient response and reduced output voltage ripple. The regulator is equipped with a synchronous rectifier, enhancing its efficiency and reducing power loss. The device is packaged in a surface-mount format, specifically in a Tape & Reel (TR) package, making it ideal for automated assembly processes.

AST1S31PUR Features

• Adjustable Output Voltage: The AST1S31PUR offers an adjustable output voltage range from 0.8V to 4V, providing flexibility to meet various power requirements.
• High Efficiency: With a synchronous rectifier and a switching frequency of 1.5MHz, the regulator ensures high efficiency and minimal power loss.
• Wide Input Voltage Range: The regulator operates within an input voltage range of 2.8V to 4V, making it suitable for applications with varying input power sources.
• High Current Capability: Capable of delivering up to 3A of output current, the AST1S31PUR is ideal for applications requiring high power delivery.
• Surface Mount Packaging: The device is available in a surface-mount Tape & Reel (TR) package, facilitating easy integration into modern PCB designs.
• Compliance and Reliability: The AST1S31PUR is REACH unaffected and ROHS3 compliant, ensuring it meets environmental and safety standards. It also has a moisture sensitivity level (MSL) of 3 (168 hours), enhancing its reliability in various environmental conditions.

AST1S31PUR Applications

The AST1S31PUR is well-suited for a variety of applications that demand efficient power management and high reliability. Some specific use cases include:

• Consumer Electronics: Ideal for powering devices such as smartphones, tablets, and portable gaming consoles where compact size and high efficiency are crucial.
• Industrial Equipment: Suitable for industrial applications that require precise voltage regulation and high current delivery, such as programmable logic controllers (PLCs) and industrial sensors.
• Telecommunications: Can be used in base stations and networking equipment where reliable power supply and efficient power conversion are essential.
• Automotive Systems: Applicable in automotive electronics, such as infotainment systems and advanced driver-assistance systems (ADAS), where the regulator's wide input voltage range and high current capability are beneficial.

Conclusion of AST1S31PUR

The AST1S31PUR from STMicroelectronics is a versatile and high-performance DC switching voltage regulator that stands out in its category. Its adjustable output voltage, high efficiency, and wide input voltage range make it suitable for a broad range of applications. The inclusion of a synchronous rectifier and its surface-mount packaging further enhance its appeal for modern electronic designs. With its compliance to environmental and safety standards, the AST1S31PUR is a reliable choice for engineers and designers looking for a robust power management solution.

AST1S31PUR Documents

Download datasheets and manufacturer documentation for AST1S31PUR

Datasheets :

AST1S31 Datasheet      

HTML Datasheet :

AST1S31 Datasheet