XCL205 Series

The XCL205 series is a synchronous step-down micro DC/DC converter which integrates an inductor and a control IC in one tiny package (2.5mm×2.0mm, H=1.0mm). A stable power supply with an output current of 600mA is configured using only two capacitors connected externally.

Operating voltage range is from 2.0V to 6.0V (XCL20xG: 1.8~6.0V). Output voltage is internally set in a range from 0.8V to 4.0V in increments of 0.05V.

The device is operated by 3.0MHz, and includes 0.42ΩP-ch driver transistor and 0.52ΩN-ch switching transistor. During stand-by, the device is shutdown to reduce current consumption to as low as 1.0μA or less. With the built-in UVLO (Under Voltage Lock Out) function, the internal driver transistor is forced OFF when input voltage becomes 1.4V or lower.

XCL205B series provide short-time turn-on by the soft start function internally set in 0.25 ms (TYP). XCL205B integrate C_L auto discharge function which enables the electric charge stored at the output capacitor C_L to be discharged via the internal auto-discharge switch located between the L_X and V_SS pins. When the devices enter stand-by mode, output voltage quickly returns to the V_SS level as a result of this function.