The ST1S40IPUR is a highly efficient, monolithic synchronous step-down regulator that is part of STMicroelectronics' extensive portfolio of power management solutions. This device is designed to deliver up to 3 A of continuous output current with an input voltage range from 4 V to 18 V, making it suitable for a variety of applications ranging from consumer electronics to industrial systems.

Key Features

• High Efficiency: The ST1S40IPUR is capable of operating with a high efficiency of up to 95%, which helps to minimize energy loss and heat dissipation during operation.
• Adjustable Output Voltage: This regulator allows users to set the output voltage from 0.8 V to the input voltage, providing flexibility for different circuit requirements.
• Integrated Power Switches: With internal power MOSFETs, this device simplifies design and enhances reliability by reducing the number of external components needed.
• Protection Features: It includes various protection features such as overcurrent protection, thermal shutdown, and under-voltage lockout, ensuring safe operation under abnormal conditions.
• Pulse Skipping Mode: For light-load conditions, the ST1S40IPUR can operate in pulse skipping mode to achieve low output voltage ripple and high efficiency.

Applications

The ST1S40IPUR is versatile and can be used in a wide array of applications, including but not limited to:

• Set-top boxes
• Digital consumer devices
• Networking systems
• Computer peripherals
• Industrial power supplies

Package and Availability

The device is available in a compact VFQFPN 3x3 mm package, which is ideal for space-constrained applications. Additionally, the ST1S40IPUR is part of STMicroelectronics' commitment to environmental sustainability and is RoHS compliant.

With its robust feature set and flexible design, the ST1S40IPUR is an excellent choice for designers looking to create efficient, reliable, and compact power management systems.