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The RT9203/A is a dual-output power controllers designed for high performance graphics cards and personal computers. The IC integrates a synchronous buck controller, a linear controller and protection functions into a small 8-pin package. The RT9203/A uses an internal compensated voltage mode PWM control for simplying design. An internal 0.8V reference allows the output voltage to be precisely regulated to meet low output voltage requirement. A fixed 300kHz oscillation frequency reduces the component size for saving board area. </p>The RT9203/A also features over voltage protection (OVP) and under voltage lock-out (UVLO).</p>
RT9203/RT9203A Typical Circuit
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<div class="spec-list"><ul class="lv1"><li>Operates at 5V </li><li>0.8V Internal Reference </li><li>Drives Two N-MOSFET </li><li>Voltage Mode PWM Control </li><li>Fast Transient Response </li><li>Fixed 300kHz Oscillator Frequency </li><li>Dynamic 0 to 100% Duty Cycle </li><li>Internal PWM Loop Compensation </li><li>Internal Soft-Start </li><li>Adaptive Non-Overlapping Gate Driver </li><li>Over-Voltage Protection Uses Lower MOSFET </li><li>RoHS Compliant and 100% Lead (Pb)-Free </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>PC Motherboard </li><li>Cable Modems, Set-Top-Box, and DSL Modems </li><li>DSP and Core Communications Processor Supplies </li><li>Memory Power Supplies </li><li>Personal Computer Peripherals </li><li>Industrial Power Supplies </li><li>5V Input DC-DC Regulators </li><li>Low Voltage Distributed Power Supplies </li><li>Graphic Cards </li></ul></div>
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