The Torex Semiconductor XC9235A13CMR is a synchronous step-down DC/DC converter designed for high-efficiency power conversion in a compact form factor. It integrates a PWM/PFM control scheme to optimize efficiency across a wide load range. This converter is well-suited for battery-powered devices and other applications where power efficiency and small size are critical.

Applications

• Smartphones
• Tablets
• Wearable Devices
• IoT Devices
• Portable Power Supplies
• Battery-Powered Equipment

Features

• Synchronous Rectification: Improves efficiency by replacing the Schottky diode with a MOSFET.
• PWM/PFM Control: Automatically switches between PWM (Pulse Width Modulation) for heavy loads and PFM (Pulse Frequency Modulation) for light loads to optimize efficiency.
• High Efficiency: Delivers high efficiency across a wide load range.
• Low Quiescent Current: Minimizes power consumption in standby mode.
• Compact Package: Small package size reduces board space requirements.
• Input Voltage Range: Wide input voltage range accommodates various power sources.
• Output Voltage Adjustment: Adjustable output voltage allows for customization to specific application requirements.
• Soft-Start Function: Limits inrush current during startup, preventing voltage droop.
• Overcurrent Protection: Includes overcurrent protection to prevent damage from excessive load current.
• Thermal Shutdown Protection: Features thermal shutdown protection to safeguard the IC from overheating.

Benefits

• Extended Battery Life: High efficiency and low quiescent current maximize battery life in portable devices.
• Compact Design: Small package size is ideal for space-constrained applications.
• Simplified Design: Integrated features simplify the design process.
• Reliable Operation: Overcurrent and thermal shutdown protection ensure reliable operation.
• Flexible Output Voltage: Adjustable output voltage allows for customization to specific application requirements.

Additional Details

The XC9235A13CMR is typically available in a small, thermally enhanced package such as a SOT-25 or similar. It requires a minimal number of external components, including an inductor, capacitors, and resistors for setting the output voltage. The datasheet provides detailed information on component selection, layout recommendations, and thermal considerations. It is essential to consult the datasheet for optimal performance and reliability.