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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®) 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 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.

Applications

  • Laptop Computers
  • Tablet PCs
  • Distributed Power Systems
Key Spec.
RT6323B RT6323BH
Status Active Active
Vin (min) (V) 3 3
Vin (max) (V) 23 23
Number of Outputs 1 1
Vout (min) (V) 0.5 0.5
Vout (max) (V) 1.5 1.5
Output Adj. Method Fixed Fixed
Iout (max) (A) 8 8
Current Limit (typ) (A) 8.5 8.5
Freq (typ) (kHz) 600 600
Ron_HS (typ) (mOhm) 33 33
Ron_LS (typ) (mOhm) 12 12
Iq (typ) (mA) 0.09 0.09
Features ACOT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;OTP;OVP;PSM;Power Good;UVP ACOT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;OTP;OVP;PSM;Power Good;UVP
Package Type VQFN2x3 -13(FC) VQFN2x3 -13(FC)
Outline Dimension, Footprint, Drawing Download Download
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 600kHz in CCM
  • Internal Power MOSFET Switch 33mΩ (High-Side) and 12mΩ (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
  • Overcurrent Protection (OCP)
  • Output Undervoltage/Overvoltage Protection (UVP/OVP)
  • Input Undervoltage-Lockout (UVLO)
  • Over-Temperature Protection (OTP)
Please confirm with our distributor or sales representative for actual stock status.
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