Dual Channel, 300mA Linear Regulator With Programmable Output Voltage and Output Discharge

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Product Description

The MP20043 is a dual-channel, low noise, low dropout and high PSRR linear regulator with programmable output voltage. The output voltage of MP20043 ranges from 1.2V to 3.3V in 100mV increments and 2.5% accuracy by operating from a +2.5V to +5.5V input. The different output voltage options can be programmed by setting the voltage of P1 and P2 to VDD, GND or floating. There are 9 different voltage settings in one chip. Each output channel can supply up to 300mA of load current. The MP20043 uses two internal PMOSs as the pass devices, which consumes 150μA supply current when both channels are enabled at no load condition. The EN1 and EN2 pins control each output respectively. When both channels shutdown simultaneously, the chip turns off and consumes nearly zero operation current which is suitable for battery-power devices. The MP20043 also features current limiting and over temperature protection.

Product Features

  • Programmable Output Voltage
  • Up to 300mA Output Current (Each LDO)
  • 60mV Dropout at 100mA Load
  • Dual Shutdown Pins Control Each Output
  • 75dB PSRR at 1kHz
  • 7μVRMS Low Noise Output
  • Current Limiting and Thermal Protection
  • Short Circuit Protection
  • Two LDOs in TQFN8 (2mm×2mm) Package
  • Output Load Discharge when Disabled


  • Vin (min) (V)2.5
  • Vin (max) (V)5.5
  • Regulated Outputs2
  • Iout (mA)300
  • Accuracy (±%)2.5
  • Noise (µVrms)7
  • Iq (typ) (µA)150
  • PSRR @ 1kHz (dB)75
  • Iout2 (mA)300
  • PackageTSOT23-6
  • GradeCatalog
  • Fixed Output 2 Options2.8,1.8,2.8,2.6,2.7,2.8,2.85,2.9,3,2.85,2.7,3.3,2.8,2.8,3.3,3.3,2.9,3.3,3.3
  • Special FeaturesCurrent Limiting, Output Discharge
  • Vdropout (mV)60 (IO: 100mA), 180 (IO: 300mA)
  • Fixed Output Options1.2,1.5,1.5,1.8,1.8,1.8,1.8,1.8,1.8,1.85,2.6,2.6,2.7,2.8,2.8,2.85,2.9,3,3.3
Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.