The XC9301A332MR is a synchronous step-down DC/DC converter manufactured by Torex Semiconductor Ltd. It's designed for applications requiring high efficiency and a small footprint, particularly in battery-powered devices. This converter integrates a PWM control circuit and a synchronous rectifier, enabling efficient power conversion.

Applications

• Smartphones
• Tablet computers
• Wearable devices (smartwatches, fitness trackers)
• Portable media players
• Wireless communication modules
• Power management for microcontrollers

Features

• Synchronous rectification: Improves efficiency by replacing the traditional Schottky diode with a MOSFET.
• PWM control: Provides stable and efficient voltage regulation.
• Low quiescent current: Minimizes power consumption during standby mode, extending battery life.
• Input voltage range: Allows operation with a wide range of battery voltages.
• Overcurrent protection: Protects the converter and the load from damage due to excessive current.
• Short-circuit protection: Shuts down the converter in case of a short circuit, preventing damage.
• Thermal shutdown protection: Disables the converter if the temperature exceeds a safe limit.
• Small package: Enables compact circuit designs.

Benefits

• Extended battery life in portable devices due to high efficiency and low quiescent current.
• Stable and reliable power supply for sensitive electronic components.
• Reduced board space requirements due to the compact package.
• Protection against damage from overcurrent, short circuits, and over-temperature conditions.
• Simplified circuit design with integrated features.

Additional Details

The XC9301A332MR operates with an input voltage range typically from 2.5V to 5.5V and provides a fixed output voltage of 3.3V with a current capacity of up to 300mA. The switching frequency is typically 1.2 MHz, which allows for the use of small external components. The device is available in a small SOT-25 package. The quiescent current is typically around 20 μA. It features built-in soft-start functionality to limit inrush current during startup. The efficiency can reach up to 90% under typical operating conditions. It also includes an enable/disable function for further power saving. The operating temperature range is -40°C to +85°C.

This DC/DC converter is a suitable choice for various battery-powered applications where high efficiency, small size, and comprehensive protection features are crucial.