Low Noise, High PSRR, 1A Linear Regulator with AEC-Q100 qualified



The MPQ20051 is a low-dropout linear regulator that supplies up to 1A current with a 140mV dropout voltage. The externally-adjustable output voltage has a range of 0.8V to 5V from an input voltage of 2.5V to 5.5V. An internal PMOS pass element allows for a low 130µA ground current, making the MPQ20051 suitable for battery-powered devices. Other features include low-power shutdown, and short-circuit and thermal protection. The MPQ20051 is available in 3mm x 3mm 8-pin QFN package.


  • Guaranteed Industrial/Automotive Temp Range Limits
  • Up to 1A Output Current
  • Low 140mV Dropout at 1A
  • Low 130µA Ground Current
  • Output Voltage Available from 0.8V to 5V
  • Low Noise: 13µVRMS typical (10Hz to 100kHz)
  • 63dB PSRR @1kHz
  • Stable with Ceramic Capacitor
  • Excellent Load/Line Transient Response
  • Current Limiting and Thermal Protection
  • Available in 3mm x 3mm 8-pin QFN Package
  • Available in AEC-Q100 Qualified Grade 1


  • Vdropout (mV)140 (IO:1000mA)
  • Special FeaturesCurrent Limiting
  • PackageQFN-8 (3x3)
  • GradeAutomotive
  • Vout (min) (V)0.8
  • Vout (max) (V)5
  • PSRR @ 1kHz (dB)63
  • Iq (typ) (µA)110
  • Noise (µVrms)13
  • Accuracy (±%)2
  • Iout (mA)1000
  • Vin (max) (V)5.5
  • 最小输入电压2.5