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The RT8810 is a dual phase synchronous buck controller which can provide users with a compact, high efficient, well protected and cost effective solution. The RT8810's integrated high driving capability MOSFET drivers makes it more attractive for high current application. The built-in bootstrap diode simplifies the circuit design and reduces external part count and PCB space. For output voltage control, the RT8810 can precisely regulate feedback voltage according to the internal reference voltage 0.6V or external reference voltage from 0.4V to 2.5V. The MODE pin programs single phase or dual phase operation, making the RT8810 suitable for dual power input applications such as PCI-Express interface graphic cards. To set RT8810 at automatic mode, the RT8810 operates in single phase at light load condition and maintains high efficiency over a wide range of output currents. In addition, the RT8810 features adjustable gate driving voltage for maximum efficiency and optimum performance.The RT8810 adopts lossless R<sub>DS(ON)</sub> current sensing technique for channel current balance and over current protection. Other features include adjustable soft-start, adjustable operation phase, and adjustable over current threshold.
RT8810 Typical Circuit
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<div class="spec-list"><ul class="lv1"><li>Single IC Supply Voltage : 4.5V to 13.2V </li><li>Supports Manual / Auto Dynamic Phase Number Control </li><li>Integrated Bootstrap Diode </li><li>Lossless R<sub>DS(ON)</sub> Current Sensing for Current Balance </li><li>Adjustable Operation Frequency : 100kHz to 1MHz </li><li>Adjustable Over Current Protection </li><li>Capacitor Programmable Soft-Start </li><li>Support 0% to 80% Duty Cycle </li><li>Selectable Internal/External V<sub>REF</sub> </li><li>Voltage Mode PWM Control with External Feedback Loop Compensation </li><li>Phase Crosstalk Jitter Suspend (CJS<sup>TM</sup>) </li><li>Programmable Quick Response </li><li>Driver Shoot Through Protection </li><li>Supports Current Reporting </li><li>16-Lead WQFN and 24-Lead WQFN Packages </li><li>RoHS Compliant and Halogen Free </li></ul></div>
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RT8810 Ordering Information
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<div class="spec-list"><ul class="lv1"><li>GPU Core Power </li><li>Desktop PC Memory, V<sub>TT</sub> Power </li><li>Low Output Voltage, High Power Density DC/DC Converters </li><li>Voltage Regulator Modules </li></ul></div>
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