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MP2009 (Ultra-Low-Noise Low-Dropout, 120mA Linear Regulator)

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Monolithic Power Systems
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 Product Description


The MP2009 is an ultra low noise, low dropout linear regulator. The output voltage of MP2009 ranges from 1.5V to 4.5V in 100mV increments and 1% accuracy by operating from a +2.0V to +6.0V input. It is designed to deliver up to 120mA continuous output current. It achieves a low 120mV dropout for full load current. The MP2009 uses an internal PMOS as the pass element, which consumes 50µA supply current at no load condition. New innovative design techniques make MP2009 achieve ultralow output voltage noise of 16µVRMS without a noise bypass capacitor. The MP2009 are designed and optimized to work with low value, low cost ceramic capacitors in space-limiting and performance consideration. It requires only 1µF (typ) of output capacitance for stability with any load. It is available in a 5-pin SC70 package.



  • Space-Saving SC70 Package
  • 16µVRMS Output Noise (100Hz to 30kHz) No Bypass Capacitor Required
  • 78dB PSRR at 1kHz ??? 120mV Dropout at 120mA Load
  • Stable with 1µF Ceramic Capacitor for Any Load ??? Low 50µA Ground Current
  • Very Fast Line and Load Transient Response with Small Input and Output Capacitor
  • Current Limit and Thermal Protection



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