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The RT6323 is a high-efficiency synchronous step-down converter with a pseudo-constant switching frequency 600kHz, delivering up to 8A continuous and 10A peak output current. The RT6323 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 RT6323 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 RT6323 operates in diode emulation mode (DEM) under the light load conditions, offering optimal light load efficiency and reducing the acoustic noise with the spread spectrum function.The RT6323 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.
RT6323 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-Limit 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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RT6323 Ordering Information
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<div class="spec-list"><ul class="lv1"><li><p style="margin-left: 10pt; text-indent: -10pt" class="Applications"><!--[if !supportLists]--><span style="font-size: 6pt; font-family: Wingdings">l<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-variant-position: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman'"> </span></span><!--[endif]--><span>Laptop Computers</span></p><p style="margin-left: 10pt; text-indent: -10pt" class="Applications"><!--[if !supportLists]--><span style="font-size: 6pt; font-family: Wingdings">l<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-variant-position: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman'"> </span></span><!--[endif]--><span>Tablet PCs</span></p><p style="margin-left: 10pt; text-indent: -10pt" class="Applications"><!--[if !supportLists]--><span style="font-size: 6pt; font-family: Wingdings">l<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-variant-position: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman'"> </span></span><!--[endif]--><span>Distributed Power Systems</span></p> </li></ul></div>
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