800mA High PSRR, ULDO Linear Regulator

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Product Description

The MP2005 is a micropower, ultra low-dropout LDO linear regulator. It has a 1.0V to 5.5V input voltage range and can regulate the output voltage from as low as 0.5V. The MP2005 can supply up to 800mA of load current with a typical dropout voltage of 90mV. It requires a bias supply (2.7V to 5.5V) separate from VIN to run the internal reference and LDO drive circuitry. The output current comes directly from the input voltage supply for high efficiency regulation. The 0.5V internal reference voltage allows the output to be programmed to a wide range of voltages (0.5V to 4V). A low bias current of 100µA makes the MP2005 ideal for use in battery-powered applications. The bias supply VBIAS can be directly applied from the battery while VIN is powered from the high efficiency buck regulator (or other secondary supply). This reduces output noise and the size of the decoupling capacitor. Other features of MP2005 include thermal overload and current limit protection, stability with ultra low ESR ceramic capacitors as low as 1μF, and fast transient response. The MP2005 is available in a 8-pin QFN (2mm x 3mm) package.

Product Features

  • Wide 1.0V to 5.5V Input Voltage Range
  • Stable with 1μF Ceramic Capacitor
  • Ultra-Low Dropout (ULDO) voltage: 90mV@800mA
  • 2% Accurate Output Voltage
  • Adjustable Output Range of 0.5V to 4V
  • High PSRR      
  • 65dB at 1KHz      
  • 48dB at 1MHz
  • Better Than 0.0005%/mA Load Regulation
  • Stable With Low-ESR Output Capacitors
  • Low 100μA Ground Current
  • Internal Thermal Protection
  • Current Limit Protection
  • 1µA Typical Quiescent Current at Shutdown


  • Vdropout (mV)70 (IO:800mA)
  • Special FeaturesCurrent Limiting
  • GradeCatalog
  • PackageQFN-8 (2x3)
  • Vout (min) (V)0.5
  • Vout (max) (V)4
  • PSRR @ 1kHz (dB)65
  • Iq (typ) (µA)104
  • Accuracy (±%)2
  • Iout (mA)800
  • Vin (max) (V)5.5
  • Vin (min) (V)1

Low Noise, High PSRR, 1A Linear Regulator EV Board

The EV20051DN-00A evaluation board demonstrates the performance of MP20051, a low noise and low dropout linear regulator. It operates from 2.5V to 5.5V input voltage and the output voltage can be set externally which ranges from 0.8V to 5V.

The EV20051DN-00A can supply up to 1A of load current, and features current limiting, over temperature protection.

An internal PMOS pass element is used to allow a low 110μA ground current, marking the MP20051 suitable for battery-power devices.

$25.00 + tax

Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.