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RT8123 是一款高效率單相同步降壓 DC/DC 控制器，具備 5V/12V 供應電壓。在輕載條件下，此 IC 會自動以脈衝跳躍模式運作，以降低切換頻率並提升轉換效率。隨著負載電流增加，RT8123 會離開脈衝跳躍模式，並以固定頻率 PWM 在連續導通模式下運作。RT8123 內嵌具高驅動能力的 MOSFET 閘極驅動器，支援高達 12V 的驅動電壓，適用於高輸出電流應用。其他功能包括電源良好指示、外部誤差放大器補償、過壓保護、過電流保護、啟用 / 停用控制與內部軟啟動。憑藉上述功能，此 IC 為客戶提供具成本效益的高效率電源轉換解決方案。RT8123 採用 WQFN-16L 3x3 封裝。
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<div class="spec-list"><ul class="lv1"><li>High Performance Operational Error Amplifier </li><li>Internal Soft-Start/Stop </li><li>±0.5% Internal Voltage Accuracy, 0.8V Voltage Reference </li><li>OCP accuracy, Four Re-entry Times Before Latch </li><li>"Lossless" Differential Inductor Current Sensing </li><li>Internal High Precision Current Sensing Amplifier </li><li>Oscillator Frequency Range of 100kHz - 1000kHz </li><li>20ns Adaptive FET Non-Overlap Time of Internal Gate Driver </li><li>5V to 12V Operation </li><li>Support VIN from 1.5V to 19V </li><li>VOUT from 0.8V to 3.3V (5V with 12 VCC) </li><li>Chip Enable Through RT/EN pin </li><li>Latched Over Voltage Protection (OVP) </li><li>Internally Fixed OCP Threshold </li><li>Guaranteed Startup Into Pre-Charged Loads </li><li>Thermally Compensated Current Monitoring </li><li>Thermal Shutdown Protection </li><li>Integrated MOSFET Drivers </li><li>Integrated BOOST Diode with Internal R<sub>BST</sub> = 2.2Ω </li><li>Automatic Power Saving Mode to Maximize Efficiency During Light Load Operation </li><li>Sync Function </li><li>Remote Ground Sensing </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>Memory and Termination Supply </li><li>Subsystem Power Supply (MCH, IOCH, PCI) </li><li>CPU and DSP Power Supply </li><li>Distributed Power Supply </li><li>General DC/DC Converter </li></ul></div>
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