Torex Semiconductor, Ltd. DC DC Switching Controllers XC9221D09AMR-G

The XC9221D09AMR-G is a step-down DC/DC controller IC from the XC9220/XC9221 series, designed for high efficiency and stable power supply applications. It operates within an input voltage range of 2.8V to 16.0V and can deliver an output current of up to 3A. The output voltage can be set externally using resistors, with a reference voltage of 0.9V (¬±1.5%). This controller features PWM/PFM automatic switching, allowing it to optimize efficiency across varying load conditions. The XC9221D09AMR-G has an internal switching frequency of 500kHz and includes a built-in soft-start function, which is externally settable. It also incorporates protection features such as under-voltage lockout and short-circuit protection. The device is compatible with low ESR capacitors, including ceramic types, and operates within a temperature range of -40¬8C to +85¬8C. It is available in SOT-25 and USP-6C packages and is compliant with EU RoHS standards. This product is suitable for applications in digital TVs, smartphones, and other portable devices.