The XC9216A25CMR is a synchronous step-down DC-DC converter manufactured by Torex Semiconductor Ltd. This device is designed for applications that require a high level of efficiency and a compact size. It integrates both the control IC and the inductor into a single chip, which significantly reduces the number of external components needed, thereby simplifying the circuit design and reducing the overall board space required.

Applications

• Power management for portable electronic devices
• Smartphones and tablets
• Wearable devices (e.g., smartwatches, fitness trackers)
• IoT (Internet of Things) devices
• Wireless modules and sensors

Features

• Integrated Inductor: Reduces the number of external components required and simplifies the PCB layout.
• Synchronous Rectification: Improves power conversion efficiency by using a MOSFET instead of a Schottky diode for rectification.
• High Efficiency: Minimizes power losses and heat generation, leading to longer battery life and reduced thermal management requirements.
• Low Quiescent Current: Reduces power consumption during standby or light load conditions.
• Compact Package: Allows for use in space-constrained applications.
• Soft-Start Function: Limits inrush current during startup, preventing voltage drops and ensuring stable operation.
• Overcurrent Protection (OCP): Protects the converter and the load from damage due to excessive current draw.
• Thermal Shutdown Protection (TSD): Protects the converter from overheating.

Benefits

• Reduced Board Space: The integrated inductor minimizes the required PCB area.
• Longer Battery Life: High efficiency and low quiescent current contribute to extended battery life in portable applications.
• Simplified Design: Integration of the inductor simplifies the design process and reduces the number of external components.
• Enhanced Reliability: Overcurrent and thermal shutdown protection features ensure robust and reliable operation.
• Stable Startup: The soft-start function ensures a smooth and controlled startup, preventing voltage drops and system instability.

Additional Details

The XC9216A25CMR typically operates with an input voltage range of 2.5V to 5.5V, delivering a fixed output voltage of 2.5V. It utilizes a PWM control scheme to regulate the output voltage and achieve high efficiency across a range of load currents. Key technical specifications include a switching frequency (around 3MHz), operating temperature range, and package dimensions. The device is RoHS compliant.