The XC9111A401PR is a synchronous step-up DC/DC converter with an integrated coil, manufactured by Torex Semiconductor Ltd. This device is designed to boost a lower input voltage to a stable 4.0V output voltage efficiently. By integrating the coil, the XC9111A401PR simplifies circuit design and reduces the overall size of the application. It utilizes PWM/PFM control to optimize efficiency over a wide range of load currents.

Applications

• Portable Devices
• Wearable Technology
• IoT (Internet of Things) Devices
• Battery-Powered Equipment
• Energy Harvesting Applications

Features

• Integrated Inductor: Reduces external component count and simplifies PCB layout.
• 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 4.0V output.
• Overcurrent Protection (OCP): Protects the device and load from excessive current.
• Thermal Shutdown (TSD): Shuts down the device if the internal temperature exceeds a safe limit.
• Small Package: Enables compact designs.

Benefits

• High Efficiency: Maximizes battery life in portable applications.
• Simplified Design: Reduces design complexity and accelerates 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 XC9111A401PR typically operates with an input voltage range of 0.9V to 5.5V. The synchronous rectification reduces power dissipation, and the PWM/PFM control optimizes efficiency across varying load conditions. The integrated coil eliminates the need for external inductor selection and placement. The device incorporates overcurrent protection and thermal shutdown for robust and reliable operation. The compact package is ideal for space-constrained applications, and the device is RoHS compliant.