26V, 12A, Low IQ, High-Current, Synchronous Buck Converter with ±A LDO and Buffered Reference



The MP8719 provides a complete power supply with the highest power density for DDR3, DDR3L, LPDDR3, and DDR4 memory. The MP8719 integrates a high-frequency, synchronous, rectified, step-down, switch-mode converter (VDDQ) with a 1A sink/source LDO (VTT) and buffered low-noise reference (VTTREF). 
The MP8719 operates at high efficiency over a wide output current load range based on MPS’s proprietary switching loss reduction technology and internal low RDS(ON) power MOSFETs. 
Adaptive constant-on-time (COT) control mode provides fast transient response and eases loop stabilization. The DC auto-tune loop provides good load and line regulation.
The VTT LDO provides 1A of sink/source current capability and requires only a 22μF ceramic capacitor. The VTTREF tracks VDDQ/2 with excellent 1% accuracy.
Full protection features include over-current (OC) limit, over-voltage protection (OVP), under-voltage protection (UVP), over-temperature warning (OTW), and thermal shutdown.
The MP8719 requires a minimal number of external components and is available in a QFN-16 (3mmx3mm) package.



  • Wide 4.5V to 26V Operating Input Range
  • 135μA Low Quiescent Current
  • 12A Continous Output Current
  • 13A Peak Output Current
  • Selectable Ultrasonic Mode (USM)
  • Selectable 500kHz/700kHz Switching Frequency
  • Built-In ±1A VTTLDO
  • 1% Buffered VTTREF Output
  • Adaptive COT for Fast Transient
  • DC Auto-Tune Loop
  • Stable with POSCAP and Ceramic Output Capacitors
  • Over-Temperature Warning (OTW)
  • Internal Soft Start (SS)
  • Output Discharge
  • OCL, OVP, UVP, and Thermal Shutdown
  • Latch-Off Reset via EN or Power Cycle
  • Available in a QFN-16 (3mmx3mm) Package


  • fsw (max) (kHz)700
  • 最小输入电压4.5
  • Vin (max) (V)26
  • Iout (max) (A)13
  • Vfb (typ) (V)0.62
  • Iq (typ) (mA)0.135
  • 额定输出1
  • Vout (max) (V)3.3
  • Vout (min) (V)0.6
  • GradeCatalog
  • PackageQFN-16 (3x3)
  • Control ModeCOT
  • Common FeaturesForced CCM, Power Good
  • Special FeaturesOutput Discharge, Programmable Frequency, Soft Stop, Ultrasonic Mode