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Product Spec Banner
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RT8123A 是一款高效率单相同步降压 DC/DC 控制器，具备 5V/12V 供应电压。在轻载条件下，此 IC 会自动以脉冲跳跃模式运作，以降低切换频率并提升转换效率。随着负载电流增加，RT8123A 会离开脉冲跳跃模式，并以固定频率 PWM 在连续导通模式下运作。RT8123A 内嵌具高驱动能力的 MOSFET 闸极驱动器，支援高达 12V 的驱动电压，适用于高输出电流应用。其他功能包括电源良好指示、外部误差放大器补偿、过压保护、过电流保护、启用 / 停用控制与内部软启动。凭藉上述功能，此 IC 为客户提供具成本效益的高效率电源转换解决方案。RT8123A 采用 WQFN-16L 3x3 封装。
RT8123A 电路图
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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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RT8123A 订购信息
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RT8123A
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RT8123A
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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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