Torex Semiconductor, Ltd. DC DC Switching Controllers XC9302A443MR-G

The XC9302A443MR-G is a step-up/down DC/DC converter controller IC designed for efficient power management in various applications. It operates within an input voltage range of 2.0V to 10V and provides a selectable output voltage range from 2.4V to 6.0V in 0.1V increments, with an accuracy of ¬±2.5%. The device features built-in fast, low ON resistance drivers and can deliver an output current of up to 250mA at 3.3V output. The XC9302A series utilizes PWM control during heavy loads and switches to PFM control under light loads, ensuring high efficiency across a range of operating conditions. Typical efficiency ratings are 81% at 5.0V output and 78% at 3.3V output. The IC includes a soft-start feature to mitigate inrush currents and voltage overshoot, with a shutdown current consumption of 0.5OºA or less. Packaged in a SOT-25 format, the XC9302A443MR-G is compliant with EU RoHS standards and is suitable for applications such as mobile phones, PDAs, and portable audio equipment.