MP2174C Switch Mode Converter

MP2174C Switch Mode Converter

MPS’ MP2174C is a 2.7 V to 5.5 V, 4 A, high-efficiency, synchronous step-down converter

Monolithic Power Systems’ MP2174C is a monolithic, step-down, switch-mode converter with built-in, internal power MOSFETs. It achieves 4 A of continuous output current from a 2.7 V to 5.5 V input voltage with excellent load and line regulation. The output voltage can be regulated as low as 0.6 V. The device has a constant on-time (COT) control scheme providing fast transient response and easy loop stabilization. Fault condition protections include cycle-by-cycle current limit and thermal shutdown. The MP2174C requires a minimal number of readily available standard external components. It is available in an ultra-small QFN-12 (2 mm x 2 mm) package making it ideal for a wide range of applications, including PDAs, portable instruments, DVD drives, and handheld devices.


  • Forced PWM mode operation
  • Wide 2.7 V to 5.5 V operating input range
  • Output voltage as low as 0.6 V
  • 4 A output current
  • 35 mΩ and 18 mΩ internal power MOSFETs
  • Peak efficiency above 96%
  • 1.1 MHz frequency
  • 100% duty cycle in dropout
  • 0.5 ms internal soft-start time
  • EN and power good for power sequencing
  • Auto-discharge at power-off
  • Short-circuit protection with hiccup mode
  • Available in a QFN-12 (2 mm x 2 mm) package

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Mike is the founder and editor of, 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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