Recently, by chance, I have had more opportunities to develop gadgets. Since gadgets are required to be portable and compact, they need to operate with limited power.
In this issue, we have investigated microcontrollers that operate at low voltages and step-up DC/DC converters that support low input voltages, so we leave this as a history.
Operation at 1.62V is possible at 20MHz or lower.
This is also driven by a fairly low voltage.
0.9V to 1.5V at 1MHz and 1.5V to 1.65V at 4MHz.
This one is 1.1V! It is driven at 4MHz.
I noticed that the homepage had disappeared. It seems to be disconnected.
Step-up DC/DC converter for low input voltage
Seiko Instruments Inc. S-8351/8352
Above is the input voltage of 0.9V.
There are many other types.
This is the type that turns a voltage of about 0.7V into 5.0V.
There are also other types that use 3.3V. It would be good to use different types depending on the application in which they are used.
This is a module and is for reference only.
However, the ultra constant voltage input of 20mV is attractive.
I wonder if there is anything smaller in size.