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Product Spec Banner
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The RT8868A 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 RT8868A 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 RT8868A comes in a small footprint with WQFN-48L 7x7 package.
RT8868A Typical Circuit
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<div class="spec-list"><ul class="lv1"><li>12V Power Supply Voltage </li><li>4/3/2/1-Phase Power Conversion for V<sub>CORE </sub>Power </li><li>3 Embedded MOSFET Drivers (2 for CPU and 1 for NB) </li><li>Internal Regulated 5V Output </li><li>Support AMD AM2 6-bit Parallel and AM2+ 7-bit Serial VID Tables </li><li>Support 3.4MHz High Speed I<sup>2</sup>C </li><li>Continuous Differential Inductor DCR Current Sense </li><li>Adjustable Frequency (Typically at 300kHz) </li><li>Selectable 1 or 2 Phase in Power-Saving (PS) Mode </li><li>Phase-Interleaving for V<sub>CORE</sub> Controller </li><li>Power Good Indication </li><li>Adjustable Over Current Protection </li><li>Over Voltage Protection </li><li>Small 48-Lead WQFN Package </li><li>RoHS Compliant and Halogen Free </li></ul></div>
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RT8868A Ordering Information
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<div class="spec-list"><ul class="lv1"><li>Desktop CPU Core Power </li><li>Low Voltage, High Current DC-DC Converter </li></ul></div>
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