XC9281 Series

HiSAT-COT®Control Extremely Small 600mA Step-Down DC/DC Converters

The XC9281/XC9282 series are 600mA synchronous rectification DC/DC converters adopting HiSAT-COT (*) control. Due to increasing the oscillation frequency to high frequency, coil with a size of 1.0 x 0.5 mm can be used.A 0.6 x 0.3 mm ceramic capacitor can be used for the input capacitance (CIN) and the output capacitance (CL), realizing that the mounting area including peripheral components can be reduced to 3.52 mm2.

Due to increasing the oscillation frequency to a high frequency, the mounting area is reduced. Additionally, an efficiency equal to or higher than that of conventional products can realize by improving on-resistance and current consumption. Because of these features, XC9281/XC9282 series are ideal for equipment requiring miniaturization and low profile mounting area, and battery-powered equipment such as mobile equipment.

Moreover, the high-speed transient response technology of the HiSAT-COT control makes it possible to minimize the fluctuation of the output voltage for a load transient condition. This feature is optimal for applications requiring a fast response and output voltage stability for an instantaneous load fluctuation like FPGA.

(*)HiSAT-COT is a proprietary high-speed transient response technology for DC/DC converter which was developed by Torex. It is Ideal for the LSI's that require high precision and high stability power supply voltage.

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Nov 5, 2018
Product News
HiSAT-COT®Control Extremely Small 600mA Step-Down DC/DC Converters XC9281/XC9282 Series

Typical Application Circuit


Input Voltage Range 2.5V~5.5V
Output Voltage Range 0.7V~1.15V(±2.0%)
Output Current 600mA
Quiescent Current 11μA
Oscillation Frequency 4MHz, 6MHz
Efficiency(fOSC=4MHz) 90%(VIN=3.7V,VOUT=1.8V,IOUT=200mA)
Control Methods HiSAT-COT Control
PWM Control
Protection Functions Current Limit
Functions Soft-Start, UVLO
CL Discharge (Type B)
Input / Output Capacitor Ceramic Capacitor
Operating Ambient Temperature - 40℃ ~ + 105℃
Environmentally EU RoHS Compliant, Pb Free


Package LGA-6B01 Number of Pins 6
Pcs/Reel 5,000 Package Size(mm) 1.2 x 1.2 x 0.3
Package WLP-5-06 Number of Pins 5
Pcs/Reel 5,000 Package Size(mm) 0.96 x 0.88 x 0.33


Technical Document