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The RT8868 is a 4/3/2/1-phase synchronous buck controller with two integrated MOSFET drivers for CPU power application and a single-phase buck with integrated MOSFET driver for North-Bridge (NB) chipset.The RT8868 uses differential inductor DCR current sense to achieve phase current balance and active voltage positioning. Other features include adjustable operating frequency, power good indication, external error-amp compensation, over voltage protection, over current protection and enable/shutdown for various applications. The RT8868 comes in a small footprint with WQFN-48L 7x7 package.
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productFeature
  • 12V Power Supply Voltage
  • 4/3/2/-Phase Power Conversion for VCORE Power
  • 3 Embedded MOSFET Drivers (2 for CPU and 1 for NB)
  • Internal Regulated 5V Output
  • Support AMD AM2 6-bit Parallel and AM2+ 7-bit Serial VID Tables
  • Support 3.4MHz High Speed I2C
  • Continuous Differential Inductor DCR Current Sense
  • Adjustable Frequency (Typically at 300kHz)
  • Selectable 1 or 2 Phase in Power-Saving (PS) Mode
  • Phase-Interleaving for VCORE Controller
  • Power Good Indication
  • Adjustable Over Current Protection
  • Over Voltage Protection
  • Small 48-Lead WQFN Package
  • RoHS Compliant and Halogen Free
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Desktop CPU Core Power<br />Low Voltage, High Current DC/DC Converter
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Keyword 1

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