Low noise, higher efficiency with our unique fast transient response control!Step-down "micro DC/DC" converter with integrated 500mA output current coil

Jul 1, 2015

XCL221/XCL222 Data Sheet [1.0MB]

Torex Semiconductor Ltd. (Tokyo Japan: President, Koji Shibamiya, 6616: JASDAQ at Tokyo Stock Exchange) has developed. The new XCL221/XCL222 series of step-down "micro DC/DC" converters with integrated coil and control IC. These converters support an ambient operating temperature of 105°C (previous products supported 85°C), and are ideal for applications such as wireless devices, wearable devices that require high efficiency, and GPS watches.

The XCL221/XCL222 series are ultra-small (dimensions: 2.5mm x 2.0mm x h1.0mm) step-down, micro DC/DC converters that incorporate a coil and control IC. Maintaining the space-saving capability of the previous XCL201/XCL202 series, this product achieves even higher efficiency.   
Because a power circuit can be configured by simply adding two ceramic capacitors to the external components, this series 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. A low switching frequency of 1.2 MHz realizes low noise. PWM control (XCL221) or PWM/PFM auto switching control (XCL222) can be selected for the control method.

The XCL221/XCL222 series uses HiSAT-COT(*), which is ideal for wireless and wearable devices that require a fast transient response and portable devices and GPS watches that incorporate a CPU.

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.

(*) HiSAT-COT is an original Torex term for High Speed Transient Response.

XCL221/XCL222 Series Features

  • Supports applications such as wireless devices, wearable devices that require high efficiency, USB devices, and GPS watches
  • HiSAT-COT(*) is used to realize a fast transient response
  • High efficiency (93.4%:5.0V⇒3.3V at 100mA)
  • Ideal for reducing printed circuit board mounting area by minimization
  • PWM auto control (XCL221) or PWM/PFM auto switching control (XCL222) can be selected
  • Low noise
  • Supports an ambient operating temperature of 105°C

See the details of XCL221 Series
See the details of XCL222 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.