8A, 23V Synchronous Step-Down Converter with 2-Bit VID Control and Low Power Mode

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^®) control architecture that provides ultra-fast transient response and further reduces the number of external components. 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 recommended junction temperature range is from -40°C to 125°C.