3A Ultra-Small and Ultra-Low Noise Step Down Power Module

3A Ultra-Small and Ultra-Low Noise Step Down Power Module


The MPM3833C from Monolithic Power Systems, Inc is a step-down module converter with built-in power MOSFETs and inductor. The MPM3833C achieves 3A of continuous output current from a 2.75V to 6V input voltage with excellent load and line regulation.

The MPM3833C works in forced continuous conduction mode (CCM) and has a voltage ripple under 10mV with one output capacitor, making it suitable for optical modules, FGPA, ASIC, and other applications requiring low ripple noise.

The output voltage can be regulated as low as 0.6V. Only FB resistors, input capacitors, and output capacitors are needed to complete the design. Also available is the EVM3833C-RH-00A evaluation board.

The constant-on-time control (COT) scheme provides fast transient response, high efficiency, and easy loop stabilization.

Full protection features include cycle­-by-cycle current limiting and thermal shutdown.

The MPM3833C requires a minimal number of readily available, standard, external components and is available in an ultra-small QFN-18 (2.5mmx3.5mmx1.6mm) package.

Summary of features:

  • 2.75V to 6V Operating Input Range
  • Adjustable Output from 0.6V
  • Low Radiated Emissions (EMI) Complies with EN55022 Class B Standard
  • Up to 3A Continuous Output Current
  • 100% Duty Cycle in Dropout
  • Forced Continuous Conduction Mode (CCM)
  • Enable (EN) and Power Good (PG) for Power Sequencing
  • Cycle-by-Cycle Over-Current Protection (OCP)
  • Short-Circuit Protection (SCP) with Hiccup Mode
  • Only Four External Components Needed
  • Available in a QFN-18 (2.5mmx3.5mmx 1.6mm) Package
  • On The Web: Monolithic Power Systems Inc.

Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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2 Responses

  • 23 December, 2018 at 10:04 am

    75V to 6V Operating Input Range : LOL error

    • 23 December, 2018 at 10:24 am

      Right, it was a typo. Fixed now.

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