I am designing a simple device that incorporates an LCD display that requires a 3V operating voltage, but I can only use a single 1.5V battery in my design.

How can battery voltage be regulated without significant loss of efficiency? I need this to stay as compact as possible and have very little experience with this.

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    \$\begingroup\$ It's probably worth adding the current you need as that can alter the solutions a bit. \$\endgroup\$ – PeterJ Aug 18 '13 at 10:56
  • \$\begingroup\$ According to the data sheet, the current consumption is about 1 uA per square centimeter, so extremely low in this case, as it is a very small display. \$\endgroup\$ – David Aug 18 '13 at 11:01
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    \$\begingroup\$ Can you add a link to your display's data sheet? \$\endgroup\$ – us2012 Aug 18 '13 at 12:35

There are a number of boost regulators on the market designed to allow circuit operation from a single ~1.5V battery cell. This is one example.

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  • \$\begingroup\$ The regulator I noted works down to 0.7V input which will most of the usable life of an Alkaline 1.5V battery. \$\endgroup\$ – DoxyLover Aug 18 '13 at 17:09
  • \$\begingroup\$ Misread the datasheet: I thought that it was adjustable output. Sorry. \$\endgroup\$ – Anonymous Penguin Aug 18 '13 at 17:11
  • \$\begingroup\$ Excellent device, and a perfect match for the requirement. +1. \$\endgroup\$ – Anindo Ghosh Aug 19 '13 at 0:07
  • \$\begingroup\$ Note that the stepup consumes power (probably more than the whole display). Consider switching off the stepup regulator if you don't need to run the display. \$\endgroup\$ – Gee Bee Mar 16 '16 at 18:02

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