Fast Transient Response, 2A Low Dropout Voltage Regulator



The MP20046 is a low dropout linear regulator supplying up to 2A current with 210mV dropout voltage. The output voltage is preset internally which ranges from 1.5V to 3.3V. An internal PMOS pass element is used to allow a low 75μA ground current at full load and drops down to 1uA when the device is disabled, making the MP20046 suitable for battery-power devices. Integrated power good (PG) function resets microcomputer and microprocessor systems in the event of an under voltage condition. MP20046 are designed to have fast response for larger load and line transient response. Other features include current limit and thermal protection. The MP20046 is available in thermally enhanced SOIC8 package and 10-pin QFN package.


  • Up to 2A Output Current
  • Low 210mV Dropout at 2A
  • Fast Transient Response
  • Open Drain Power-Good(PG) Status Output
  • High 70dB at100Hz PSRR
  • Low 17μVRMS Output Noise
  • Current Limit and Thermal Protection
  • Available in SOIC8 with Exposed Pad and 10-pin QFN Packages


  • Fixed Output Options1.5,1.8,2.5,3.3
  • Vdropout (mV)210 (IO: 2000mA)
  • Special FeaturesCurrent Limiting, Power Good
  • GradeCatalog
  • PackageQFN-10 (3x3)
  • Vout (min) (V)1.5
  • Vout (max) (V)3.3
  • PSRR @ 1kHz (dB)70
  • Iq (typ) (µA)75
  • Noise (µVrms)17
  • Accuracy (±%)0.1
  • Iout (mA)2000
  • Vin (max) (V)5.5
  • Vin (min) (V)2.7