Torex Semiconductor

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


XC9281 / XC9282
The XC9282 series are 600 mA 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.
HiSAT-COT ® Control Extremely Small 600mA Step-Down DC/DC Converters
GENERAL DESCRIPTION

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.

APPLICATIONS
 
  • Smart phones / Mobile phones
  • Wireless earphone / Headset
  • Wearable devices
  • DSC / Camcorder
  • Portable game consoles
  • Smartcard
  • Power supply for module
  • Various small power sources

FEATURES
 
  1. Input Voltage Range : 2.5V ~ 5.5V
  2. Output Voltage Range :
    • 0.7V ~ 1.15V (±2.0%)
    • 1.2V ~ 3.6V (±1.5%)
  3. Output Current : 600mA
  4. Quiescent Current : 11μA (XC9282 PWM/PFM Auto)
  5. Oscillation Frequency : 4MHz, 6MHz
  6. Efficiency (fOSC=4MHz) : 90.0% (VIN=3.7V,VOUT=1.8V,IOUT=200mA)
  7. Control Methods :
    • HiSAT-COT Control
    • PWM Control (XC9281)
    • PWM/PFM Auto (XC9282)
  8. Protection Functions : Current Limit
  9. Functions :
    • Soft-Start, UVLO
    • CL Discharge (Type B)
  10. Input / Output Capacitor : Ceramic Capacitor
  11. Operating Ambient Temperature : - 40℃ ~ 105℃
  12. Package :
    • LGA-6B01 (1.2 x 1.2 x 0.3mm)
    • WLP-5-06 (0.88 x 0.96 x 0.33mm)
  13. Environmentally : EU RoHS Compliant, Pb Free

*Torex Authorized Distributor
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