desining one battery remote

[sanna]

one battery

Hi,
I am designing one battery remote and thinking to use one AA battery instead of two. using a DC DC converter to boost it up to 3.3 V. Just wonder what can be disadvantages with one battery except battery life and what I have to concider with one battery.

Thanks for all help

 

[minumula]

battery remote posts

Why do you want to use one AA battery?
To boost from 1.5V to 3.3V you need a switching regulator (plus additional components adds significant cost to your design)

 

[pauloynski]

The MAX1724 seems to be the right circuit for you. The advantage you´ll get from it is that you´ll have a fixed regulated voltage from an input voltage down to 0.9V. This way you´ll use the whole power from the battery. The disadvantage is cost.
Regards

 

[sanna]

I am trying to see if I can reduce cost, but it seems that the DC DC is more pricy to boost 1.5 V battery to 3.3 V?!
Is anything else I have to pay attention to when I use 1 battery?

Thanks,
Sanna

 

[pauloynski]

Just act as any manufacturer: battery cost is not a problem of yours. It is a problem left for the owner. No one ask the price of the batteries when buying a product.Haven´t you seen how bad are the batteries that come inside products manufactured in China? Just choose: you assume the costs or the user assumes it. The only relevant point here is that by using a SMPS you can draw all the power from the battery and sometimes it will last more than a pair if your circuit is sensitive to voltage drop.