The ST1S09IPUR is a highly efficient, synchronous step-down DC-DC converter designed by STMicroelectronics, a leader in semiconductor solutions. This voltage regulator is tailored for portable and space-constrained applications that demand low power consumption and high efficiency.

Key Features

• Output Voltage Range: The ST1S09IPUR offers an adjustable output voltage range from 0.8V to VIN, making it versatile for various low-voltage applications.
• High Efficiency: With a peak efficiency of up to 95%, this device ensures minimal power loss and heat generation, prolonging battery life in portable devices.
• Maximum Output Current: It can deliver up to 1.5A of continuous output current, catering to the needs of high-performance electronics.
• Operating Input Voltage: The input voltage range is from 2.5V to 5.5V, compatible with standard battery technologies and USB power sources.
• Low Quiescent Current: Its low quiescent current of just 20μA (typical) in light-load conditions enhances battery life in standby modes.
• Frequency Synchronization: The device allows for external frequency synchronization to optimize system performance and reduce electromagnetic interference (EMI).
• Protection Features: It includes thermal shutdown, current limit, and short-circuit protection, ensuring reliable operation under various conditions.

Applications

The ST1S09IPUR is ideal for a wide range of applications, including but not limited to:

• Mobile phones and smartphones
• Portable media players
• Digital cameras and camcorders
• Handheld GPS units
• Wireless LAN/Networking devices

Package and Availability

The regulator is available in a compact QFN-16 (3x3 mm) package, providing a space-saving solution for densely packed circuit boards. Its lead-free and RoHS-compliant design reflects STMicroelectronics' commitment to environmental sustainability.

For technical documentation, sample requests, or purchase information, visit the STMicroelectronics website or contact an authorized distributor. The ST1S09IPUR is a testament to STMicroelectronics' dedication to providing advanced power management solutions that meet the evolving needs of modern electronics.