The XC9111A271MR-G is a synchronous step-up DC/DC converter manufactured by Torex Semiconductor Ltd. It is designed to boost a lower input voltage to a stable higher output voltage. Its architecture incorporates a coil and control IC in a single package for simplified circuit design and a smaller overall solution size. It uses PWM/PFM control to ensure high efficiency across a broad range of load conditions.

Applications

• Mobile Phones
• Digital Cameras
• Portable Media Players
• Wireless Sensors
• Other Battery-Powered Devices

Features

• Integrated Inductor: Reduces external component count and simplifies PCB layout.
• Synchronous Rectification: Improves efficiency and reduces power dissipation.
• PWM/PFM Switching Control: Automatic switching optimizes efficiency at light and heavy loads.
• Low Input Voltage Operation: Operates from a low voltage source, ideal for battery-powered applications.
• Fixed Output Voltage: Provides a stable 2.7V output voltage.
• Over Current Protection (OCP): Protects the device from damage due to excessive current.
• Thermal Shutdown (TSD): Protects the device from overheating.
• Small Package Size: Enables compact designs.

Benefits

• High Efficiency Conversion: Extends battery life in portable devices.
• Reduced Component Count: Simplifies design and lowers BOM cost.
• Small Form Factor: Allows for compact product designs.
• Reliable Output Voltage: Ensures stable power supply for connected circuitry.
• Enhanced Protection: Safeguards the device and the load from fault conditions.

Additional Details

The XC9111A271MR-G provides a stable 2.7V output voltage, and is designed to operate with input voltages as low as 0.9V. Its PWM/PFM control intelligently manages the switching frequency, balancing efficiency and output ripple. The synchronous rectification significantly reduces power loss during the switching process, contributing to overall efficiency. This IC includes safety features such as overcurrent protection and thermal shutdown to ensure robust and reliable operation. It is offered in a small package to minimize the required board space. The "-G" suffix indicates that the product is lead-free and RoHS compliant.