Maxim Integrated MAX17625 Synchronous Step-Down Converters

Maxim Integrated MAX17625 Synchronous Step-Down Converters


Maxim Integrated MAX17625 Synchronous Step-Down Converters have integrated MOSFETs and compensation components. These operate over a 2.7V to 5.5V input voltage range. The MAX17625 supports up to 700mA load current and allows the use of small, low-cost input and output capacitors. The output voltage can be adjusted from 0.8V to 3.3V. When the EN pin is asserted, an internal power-up sequence ramps up the error-amplifier reference, resulting in output-voltage soft-start. The FB pin monitors the output voltage through a resistor divider. The devices select either PFM or forced-PWM mode depending on the state of the MODE pin at power-up. By pulling the EN pin to low, the devices enter shutdown mode and consume only 0.1µA (typ) of standby current.


  • Easy to use
    • 2.7V to 5.5V input
    • Adjustable 0.8V to 3.3V output
    • ±1% feedback accuracy
    • Up to 700mA output current
    • Fixed 2MHz or 4MHz operation
    • 100% duty-cycle operation
    • Internally compensated
    • All-ceramic capacitors
  • High efficiency
    • Selectable PWM- or PFM-mode of operation
    • Shutdown current as low as 0.1μA (typ)
  • Flexible design
    • Internal soft-start and pre-bias startup
    • Open-drain power good output (PGOOD Pin)
  • Robust operation
    • Overtemperature protection
    • Overcurrent protection
    • -40°C to +125°C ambient operating temperature/-40°C to +150°C junction temperature

Application Circuit

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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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