I'm currently using a charge pump ic chip (http://www.digikey.com/product-detail/en/microchip-technology/MCP1252-33X50I-MS/MCP1252-33X50I-MS-ND/529831) for stepping up a 3V coin cell to a 3.3V regulated supply.
I originally chose this chip seeing as how, "it got the job done". However, I've realized that operating in this range (3V -> 3.3V) is only 60% efficient. I've also learned that high current draw from a coincell should be avoided seeing as coin cells have high internal resistance. I'm afraid that implementing this regulator is going to strain my battery even more than it already is.
The coin cell I'm using is a CR2032, but there's a chance I'm going to be switching to a different battery type soon.
So I'm curious, is anyone aware of a more efficient method for doing this?
Ideal solutions feature:
- Purchasable IC package (i.e. I don't feel like designing my own regulator circuit).
- Something of a small form factor (surface mount chip height).