The ST1S09IPUR/MO is a highly efficient, synchronous step-down monolithic switching regulator designed by STMicroelectronics to deliver outstanding performance for a wide range of applications. This compact and versatile power solution is particularly well-suited for portable and space-constrained electronics where power efficiency and reliability are paramount.

Key Features

• Adjustable Output Voltage: The device provides an adjustable output voltage that can be set from 0.8V to VIN, making it highly versatile for various design requirements.
• High Efficiency: With a synchronous rectification topology, the ST1S09IPUR/MO achieves high efficiency, which is crucial for extending battery life in portable devices.
• Low RDS(on) MOSFETs: The integrated low RDS(on) MOSFETs ensure minimal conduction losses and help in maintaining high efficiency across a wide load range.
• High Switching Frequency: Operating at a high switching frequency of up to 1.5MHz, this regulator allows the use of small surface-mount inductors and capacitors, thus reducing the overall solution size and saving board space.
• Thermal Protection: The device includes thermal shutdown protection that safeguards the regulator from damage due to overheating.
• Current Mode Control: The current mode control provides fast transient response and excellent loop stability.
• Low Shutdown Current: When disabled, the device draws a very low shutdown current, which is critical for battery-powered applications.

Applications

The ST1S09IPUR/MO is designed for a variety of applications, including but not limited to:

• Portable and battery-powered equipment
• Microprocessor and DSP supply
• Memory supply
• Consumer electronics
• Networking and telecom systems

Quality and Reliability

STMicroelectronics is renowned for its commitment to quality and reliability. The ST1S09IPUR/MO is built to meet the highest standards, ensuring stable performance and a long operational lifespan, even under challenging conditions.