The XC6401EE26MRN is a synchronous step-down DC/DC converter manufactured by Torex Semiconductor Ltd. This device is designed for applications that require high efficiency and a compact solution. It integrates a control IC and power MOSFETs into a single package, minimizing the number of external components needed and simplifying PCB layout. The XC6401 series employs a constant frequency PWM (Pulse Width Modulation) control scheme to ensure stable operation and low ripple voltage.

Applications

• Portable Media Players: Powers the display, processor, and audio components.
• Digital Cameras and Camcorders: Provides efficient power for image sensors, processors, and display screens.
• Remote Controls: Powers the microcontroller and communication components.
• Toys and Educational Devices: Used in electronic toys, educational robots, and interactive learning tools.
• Handheld Gaming Consoles: Powers the processor, display, and audio circuitry.

Features

• Synchronous Rectification: Improves efficiency by using MOSFETs as both high-side and low-side switches.
• Constant Frequency PWM Control: Ensures stable operation and predictable performance.
• Integrated Power MOSFETs: Reduces external component count and simplifies board design.
• Small Package Size: Allows for compact designs and space-constrained applications.
• Low Quiescent Current: Minimizes power consumption during standby and light-load conditions.
• Soft-Start Function: Limits inrush current during startup, preventing voltage drops and stress on components.
• Short-Circuit Protection: Protects the device and connected circuitry from damage due to short circuits.
• Over-Current Protection: Limits the output current to prevent overloading the device.
• Thermal Shutdown Protection: Disables the device when the junction temperature exceeds a safe limit.

Benefits

• High Efficiency: Maximizes battery life in portable devices and reduces heat dissipation.
• Compact Design: Enables smaller and more portable products.
• Simplified PCB Layout: Reduces design complexity and time to market.
• Enhanced Reliability: Integrated protection features ensure robust and dependable operation.
• Lower BOM Cost: Fewer external components reduce the overall cost of materials.
• Stable Output Voltage: Provides a consistent and regulated voltage supply to the load.
• Extended Battery Life: Low quiescent current minimizes power consumption during idle periods.

Additional Details

The XC6401EE26MRN operates with an input voltage typically ranging from 2.7V to 5.5V and provides a regulated output voltage of 2.6V. The switching frequency is typically around 3 MHz, allowing for smaller external components. It is available in a compact package such as SOT-25. The device's efficiency can reach up to 95% under optimal conditions. This converter also features a Power Good signal to indicate when the output voltage is within its specified range, ensuring reliable system operation.