300mA LDO Linear Regulator with Integrated Reset Circuit

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Product Description

The MP6401 combines a low-dropout linear regulator with an integrated reset circuit. It operates from a 2.5V to 5.5V input voltage and regulates the output voltage with 2% accuracy at 1.8V, 2.5V, 3.3V or adjustable value. It delivers up to 300mA of load current. By combining an LDO linear regulator with a reset circuit, these products can reduce cost and save space in compact portable devices such as cell phones, smart phones, PDAs, PMPs, and portable GPS devices. The MP6401 provides a push-pull, active-low that asserts when the regulator output voltage drops below the microprocessor supply threshold (-7.5% or -12.5% of nominal output voltage). Four reset delay time, 3.125ms, 25ms, 200ms and 1580ms can be selected. The MP6401 is available in 3mmx3mm TQFN8, 2mmx2mm TQFN6 and TSOT packages and is specified for operation from -40? to 85?.

Product Features

  • Low Quiescent Current of 80? for Battery Powered Equipment
  • Low 114mV Dropout at 300mA Output
  • ?% Accurate Output Voltage
  • Fixed Output Voltage Options of 1.8V, 2.5V or 3.3V
  • Adjustable Output Voltage from 1.229V to 5V Using an External Resistor Divider
  • 15?RMS Ultra Low Noise Output
  • PSRR: 57dB at 1kHz
  • Input Reverse Current, Thermal and Short-Circuit Protection
  • Microprocessor Reset with Four Delay time Options
  • Push-Pull


  • Vdropout (mV)114(Io:300mA)
  • tdelay (ms)3.125-1580
  • GradeCatalog
  • VCC (max) (V)5.5
  • Vthreshold (typ) (V)0.25
  • Reset Threshold Accuracy (±%)7.5
  • LDO Iout (mA)300
  • PSRR @ 1kHz (dB)57
  • Iq (typ) (µA)80
  • VCC (min) (V)2.5