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The RT6323B/RT6323BH is a high-efficiency synchronous buck converter with a pseudo-constant switching frequency 600kHz, delivering up to 8A continuous and 10A peak output current. The RT6323B/RT6323BH operates from 3V to 23V input voltage. It supports 2-bit VID and low power mode (LPM#) to dynamically change the output voltage to satisfy VDD_MEM applications.The RT6323B/RT6323BH adopts Advanced Constant On-Time (ACOT<sup>®</sup>) control architecture that provides ultra-fast transient response and further reduces the number of external components. In steady states, the ACOT<sup>®</sup> operates at a nearly constant switching frequency across line, load, and output voltage ranges and simplifies the EMI filter design.The RT6323B/RT6323BH operates in diode emulation mode (DEM) under the light load conditions, offering optimal light load efficiency.The RT6323B/RT6323BH provides a Power-Good indicator for easy system sequence control. It also integrated full protection features, including the cycle-by-cycle current limit, OVP, UVP, input UVLO, and OTP.All functions are integrated in a VQFN-13L 2x3 (FC) package. The recommended junction temperature range is from -40°C to 125°C.
RT6323B/RT6323BH Typical Circuit
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<div class="spec-list"><ul class="lv1"><li>Input Voltage Range: 3V to 23V </li><li>Output Voltage: 0.65V/0.78V/0.85V/0.95V (VDD_MEM 2-Bit VID Control) </li><li>8A Continuous and 10A Peak Output Current </li><li>Pseudo Constant Switching Frequency 600kHz in CCM </li><li>Internal Power MOSFET Switch 33mΩ (High-Side) and 12mΩ (Low-Side) </li><li>Stable with POSCAP and MLCC Capacitors </li><li>Fast Transient Response </li><li>Diode Emulation Mode (DEM) for Power Saving </li><li>Low Power Mode (LPM) for Power Saving </li><li>Overcurrent Protection (OCP) </li><li>Output Undervoltage/Overvoltage Protection (UVP/OVP) </li><li>Input Undervoltage-Lockout (UVLO) </li><li>Over-Temperature Protection (OTP) </li></ul></div>
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RT6323B/RT6323BH Ordering Information
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<div class="spec-list"><ul class="lv1"><li>Laptop Computers </li><li>Tablet PCs </li><li>Distributed Power Systems </li></ul></div>
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