I am using the DC-DC boost converter MT3608 for a project where my input ranges around 1 V. Is there a way to modify the circuit so that the boost converter can operate at voltages less than its minimum rated input voltage i.e 2 V? If yes, what exact modifications are required in the boost converter or the circuit around it?

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    \$\begingroup\$ Not worth it. Choose a different boost converter. Linear have some excellent for the purpose which starts at <1 V. \$\endgroup\$
    – winny
    Mar 10, 2021 at 19:12
  • \$\begingroup\$ the ones i require are not available in my country. Could you maybe suggest alternatives for making my own that boost voltages from about 0.5-0.9 to about 3 V \$\endgroup\$ Mar 10, 2021 at 19:17
  • \$\begingroup\$ Mouser, DigiKey and Farnell ships all over the world, so it’s available to you all right. \$\endgroup\$
    – winny
    Mar 10, 2021 at 19:21
  • \$\begingroup\$ international shipping is a pain in our country atm. I also have a time crunch on this. Is there some alternative that you know of? \$\endgroup\$ Mar 10, 2021 at 19:29
  • \$\begingroup\$ You haven't stated current. Choose a different boost converter. \$\endgroup\$ Mar 10, 2021 at 19:41

1 Answer 1


No, according to the datasheet, the MT3608 does not work with voltages below 2V.

  • \$\begingroup\$ There is also a lockout of 1.98V. So 2V minimum. \$\endgroup\$ Mar 10, 2021 at 19:06
  • \$\begingroup\$ Thanks for the quick reply. Can we build an inexpensive circuit around it to step it up to 2V somehow. something like a joule's thief (this was very inefficient in my case) \$\endgroup\$ Mar 10, 2021 at 19:09

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