RT6323 Datasheet | Richtek

Description The RT6323 is a high-efficiency synchronous Buck converter with a pseudo-constant switching frequency 600k Hz, 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® ) control architecture that provides ultra-fast transient response and further reduces the number of external ponents. In steady states, the ACOT® 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 remended junction temperature range is from - 40C to 125C. 2 Features - Input Voltage Range: 3V to 23V - Output Voltage: 0.65V/0.78V/0.85V/0.95V (VDD_MEM 2-Bit VID Control) - 8A Continuous and 10A Peak Output Current - Pseudo Constant Switching Frequency 600k Hz in CCM - Internal Power MOSFET Switch 33m (High- Side) and 12m (Low-Side) - Stable with POSCAP and MLCC Capacitors - Fast Transient Response - Diode Emulation Mode (DEM) for Power Saving - Low Power Mode (LPM) for Power Saving - Current-Limit Protection - Output Undervoltage/Overvoltage Protection (UVP/OVP) - Input Undervoltage-Lockout (UVLO) - Over-Temperature Protection (OTP) 3 Applications - Laptop puters - Tablet PCs - Distributed Power Systems 4 Simplified Application Circuit VCC RPG CIN CVCC VPG VEN RMODE RT6323A/AH BOOT RBOOT...