Products - Step-Down

High Efficiency 500mA Buck Micro DC/DC with integrated Coil

Application Notes

The XCL221/XCL222 is a family of 500mA Step-Down micro DC/DC Converters with integrated coil. With a 1.2MHz switching frequency the XCL221/22 delivers very high levels of efficiency and its small size and simple circuit architecture makes it an ideal replacement for inefficient linear regulators.

Measuring only 2.5mm x 2.0mm x 1.0mm, the XCL221/22 series is designed to minimize EMC emissions and maximize efficiency, while delivering a very stable output with low peak to peak ripple Voltage (<10mV).

The XCL221/22 utilises Hi-SAT COT, Torex’s Constant ON Time architecture which ensures extremely fast load transient response performance in comparison to standard DC/DC solutions.

By integrating the coil, Torex has further simplified the circuit layout for the designer and reduced the number of external components normally needed to implement this type of DC/DC solution. The smaller circuit layout also means less PCB tracking, which helps further reduce the radiated noise.
The operating ambient temperature range is -40°C ~ 105°C.