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The RT7238B/C/D/E is an advanced constant on-time (ACOT<sup>TM</sup>) mode synchronous step-down converter. The main control loop of RT7238B/C/D/E using an advanced constant on-time (ACOT<sup>TM</sup>) mode control which provides a very fast transient response. The RT7238B/C/D/E operates from 8V to 23V input voltage. For the RT7238D, the output voltage can be adjusted between 0.6V to 5V.
RT7238B/RT7238C/RT7238D/RT7238E Typical Circuit
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<div class="spec-list"><ul class="lv1"><li>Advanced Constant On-Time (ACOT) Control </li><li>8V to 23V (RT7238B/C/D/E) Input Voltage Range @ 8A Output Current </li><li>ACOT<sup>TM</sup> Mode Performs Fast Transient Response </li><li>ACOT<sup>TM</sup> Architecture to Enable all MLCC Output Capacitor Usage </li><li>Fixed 500kHz Switching Frequency </li><li>High Efficient Internal Power MOSFET Switch <ul class="lv2"> <li></li><li>27mΩ (High-Side) and 10mΩ (Low-Side) </li></ul> </li><li>Adjustable Output Voltage from 0.6V to 5V (RT7238D) </li><li>Fixed 3.3V (RT7238B/D) or 5V (RT7238C/E) LDO Output Supplies 70mA </li><li>Pre-biased Soft-Start </li><li>Cycle-by-Cycle Over-Current Protection </li><li>Input Under-Voltage Lockout </li><li>Thermal Shutdown </li><li>Output Over/Under-Voltage Protection </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>Industrial and Commercial Low Power Systems </li><li>Computer Peripherals </li><li>LCD Monitors and TVs </li><li>Green Electronics/Appliances </li><li>Point of Load Regulation for High-Performance DSPs, FPGAs, and ASICs </li></ul></div>
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