The RT8867 is an advanced 4/3-phase synchronous buck controller with 3 integrated MOSFET drivers. It integrates an 8-bit DAC that supports Intel VR11.x and VR10.x CPUs power application.
The IC adopts state-of-the-art dynamic phase control capability by PS1/2/3 pins and achieves high efficiency over a wide load range. It uses lossless RDS(ON) current sensing to achieve phase current balance. Other features include adjustable operating frequency, adjustable soft-start, short circuit protection, adjustable over current protection, over voltage protection, under voltage protection, power good indication, VR_HOT indication and VR_SHDN indication.
The RT8867 is available in a small footprint with WQFN-48L 6x6 package.
Applications
- Desktop CPU Core Power
- Middle/High End Graphic Cards
- Low Voltage, High Current DC/ DC Converters