Smallest size in the world! Step-down "micro DC/DC" converters with1.0A output current and integrated coil

Jul 1, 2015

XCL219/XCL220 Data Sheet [1.0MB]

Torex Semiconductor Ltd. (Tokyo Japan: President, Koji Shibamiya, 6616: JASDAQ at Tokyo Stock Exchange) has developed. The XCL219/XCL220 series of "micro DC/DC" converters with integrated coil and control IC. These converters are the smallest in the world in the1.0A continuous output current (*2) category.

The XCL219/XCL220 series are ultra-small (dimensions: 2.5mm x 2.0mm x h1.0mm) step-down, micro DC/DC converters that integrate a coil and control IC, and achieve the smallest size and lowest-profile in the world(*1) for a 1.0A continuous output current type. Maintaining the space-saving capability of the previous XCL205/XCL206 series, this product achieves a high output current and high efficiency.  
Because a power circuit can be configured by simply adding two ceramic capacitors to the external components, this product contributes to space-saving on the board and shortening of development time. The integrated coil simplifies the board layout, and unwanted radiation noise and circuit operating trouble can be minimized.

The operating voltage range is 2.5V to 5.5V, and the output voltage is selectable in the range 0.8 to 3.6V (accuracy ±2.0%) in steps of 0.05V. The switching frequency is 3.0MHz, and PWM control (XCL219) or PWM/PFM auto switching control (XCL220) can be selected for the control method.

The XCL219/XCL220 series uses HiSAT-COT (*3), which is ideal for optical cable and PC peripheral devices that require a fast transient response, and portable and digital devices that incorporate a CPU. An ambient operating temperature of up to 105°C is supported (previous products: 85°C), allowing these converters to be used in industrial equipment applications.

With the addition of this product to our lineup, even more selections are available to match the application. Torex will continue to expand the XCL series of "micro DC/DC" converters to meet market needs.

(*1) Among DC/DC converters with an integrated 1.0A output-type coil and IC.   
Based on an in-company investigation (as of July 1, 2015).   
(*2) Current that can be supplied continuously   
(*3) HiSAT-COT is an original Torex term for High Speed Transient Response.

XCL219/XCL220 Series Features

  • Smallest in the world among 1.0A-class continuous output current,step-down DC/DC converters with integrated coil(*1)
  • HiSAT-COT(*3)is used to realize a fast transient response.
  • Supports a wide variety of applications, including optical cables, PC peripheral devices, portable and digital devices that incorporate a CPU, and industrial equipment
  • High efficiency(93.3%: 5.0V⇒3.3V at 300mA)
  • Ideal for reducing printed circuit board mounting area by minimization
  • Supports an ambient operating temperature of 105°C


See the details of XCL219 Series
See the details of XCL220 Series

Torex Semiconductor Ltd. is a leading provider of CMOS power management ICs targeted toward battery powered and energy efficient applications. Torex specializes in CMOS analog technology, with LDO voltage regulators, voltage detectors and DC/DC converters making up our core product offering.