The XC9111A281PR is a synchronous step-up DC/DC converter with an integrated coil, manufactured by Torex Semiconductor Ltd. It is designed to boost a lower input voltage to a stable 2.8V output. The integrated coil simplifies the design process and minimizes the required board space. The device utilizes a PWM/PFM control scheme to maintain high efficiency across a wide range of load currents.

Applications

• Portable Devices
• Wearable Electronics
• IoT Devices
• Battery-Powered Systems
• Energy Harvesting Applications

Features

• Integrated Inductor: Simplifies the PCB layout and reduces component count.
• Synchronous Rectification: Enhances efficiency and reduces power loss.
• PWM/PFM Control: Optimizes efficiency at both light and heavy loads.
• Low Start-up Voltage: Allows operation from a low input voltage, suitable for single-cell batteries.
• Fixed Output Voltage: Provides a stable 2.8V output.
• Overcurrent Protection: Protects the device and the load from overcurrent conditions.
• Thermal Shutdown: Shuts down the device when the internal temperature exceeds a safe limit.
• Compact Package: Enables smaller and more portable designs.

Benefits

• High Efficiency: Maximizes battery life in portable applications.
• Simplified Design: Reduces design complexity and time to market.
• Small Footprint: Allows for compact and space-saving designs.
• Stable Output Voltage: Ensures reliable performance of connected devices.
• Robust Protection: Protects against damage due to overcurrent and overheating.

Additional Details

The XC9111A281PR operates with an input voltage range typically from 0.9V to 5.5V. Its synchronous rectification reduces power dissipation significantly compared to traditional diode-based converters. The PWM/PFM mode switching allows for optimal efficiency across varying load conditions. The integrated coil eliminates the need for external inductor selection and placement, simplifying the design process and reducing the overall solution size. It incorporates safety features such as overcurrent protection and thermal shutdown to ensure robust and reliable operation. The compact package is ideal for space-constrained applications, and the device is RoHS compliant.