The XC9226A25CMR is a synchronous step-down DC/DC converter manufactured by Torex Semiconductor Ltd. This converter is designed for applications requiring high efficiency and a small footprint. It integrates a PWM control circuit and a synchronous rectification system, allowing for stable and efficient power conversion.

Applications:

• Power management in portable devices: Smartphones, tablets, and other battery-powered electronics.
• Regulation of voltage in IoT devices: Sensors, wireless modules, and embedded systems.
• Point-of-load power supplies: For microcontrollers, FPGAs, and other digital ICs.
• Powering wearables: Smartwatches, fitness trackers, and health monitoring devices.
• General purpose DC-DC conversion: Applications requiring efficient step-down voltage regulation.

Features:

• Synchronous Rectification: High efficiency is achieved by replacing the schottky diode with a PMOS transistor.
• PWM Control: Stable output voltage regulation with Pulse Width Modulation.
• Low Supply Current: Minimizes power consumption during operation.
• Small Package: Compact size allows for integration into space-constrained applications.
• Input Voltage Range: Wide input voltage range for versatile applications.
• Built-in Protection Circuits: Overcurrent protection (OCP) and thermal shutdown (TSD).

Benefits:

• High Efficiency: Maximizes battery life in portable devices due to synchronous rectification.
• Compact Solution: Reduces board space requirements for smaller product designs.
• Stable Voltage Regulation: Ensures reliable operation of downstream components.
• Simplified Design: Requires fewer external components, reducing BOM cost and complexity.
• Robust Protection: Enhances system reliability and prevents damage from fault conditions.

Additional Details:

The XC9226A25CMR operates with an input voltage range typically from 2.5V to 5.5V, making it suitable for various battery chemistries and power sources. The output voltage is fixed at 2.5V. The switching frequency is typically around 3.0 MHz, allowing for the use of small external components. The device comes in a small package, such as a SOT-25 or similar, to minimize the overall solution size. It includes built-in overcurrent protection (OCP) to safeguard the device and the load from excessive current draw, and a thermal shutdown (TSD) feature to prevent overheating. The quiescent current is low, further enhancing battery life. The XC9226 series is designed for applications where high efficiency, small size, and reliable performance are critical.