The XC9235A28CER is a synchronous step-down DC/DC converter manufactured by Torex Semiconductor Ltd. This converter is designed for applications that demand high efficiency and stable voltage regulation within a compact footprint. It employs PWM control along with synchronous rectification to minimize power loss and ensure reliable performance.

Applications:

• Portable Electronic Devices: Power management in smartphones, tablets, digital cameras, and portable media players.
• Wearable Technology: Voltage regulation in smartwatches, fitness trackers, and other wearable devices.
• Internet of Things (IoT) Devices: Supplying power to sensors, wireless modules, and microcontrollers in IoT applications.
• Battery-Powered Equipment: Efficient voltage conversion in portable medical devices, power tools, and other battery-operated equipment.
• Point-of-Load (POL) Regulation: Delivering stable and regulated power to sensitive electronic components like microprocessors and memory chips.

Features:

• Synchronous Rectification: Improves efficiency by using MOSFETs instead of Schottky diodes for rectification, reducing power losses.
• PWM Control: Provides stable and accurate output voltage regulation.
• Low Quiescent Current: Minimizes power consumption in standby mode, extending battery life.
• Compact Package: Available in small packages to minimize board space.
• Input Voltage Range: Wide input voltage range supports various applications.
• Built-in Protection Circuits: Includes overcurrent protection (OCP) and thermal shutdown (TSD) to protect the device and the load.

Benefits:

• High Efficiency: Maximizes battery life in portable devices due to synchronous rectification.
• Small Solution Size: Enables compact and lightweight product designs.
• Stable Output Voltage: Ensures reliable operation of connected components.
• Extended Battery Life: Low quiescent current minimizes power drain during idle periods.
• Robust Protection: Enhances system reliability by preventing damage from overcurrent or overheating conditions.

Additional Details:

The XC9235A28CER operates with an input voltage typically ranging from 2.5V to 5.5V. It offers a fixed output voltage of 2.8V. The switching frequency is typically around 3 MHz, facilitating the use of small external components like inductors and capacitors. The device integrates a soft-start function to limit inrush current during startup, preventing voltage overshoot. It is also compatible with low-ESR ceramic capacitors. The 'CER' suffix signifies a specific package type. Consult the Torex Semiconductor datasheet for more accurate specifications and features. The integrated overcurrent protection (OCP) limits the output current to protect the device and the load from damage due to overcurrent conditions. The thermal shutdown (TSD) function turns off the device if the junction temperature exceeds a defined limit.