Page 1 of 1

About the Lithium-Po Battery Management

Posted: 10 Jan 2017, 21:06
by billdan
I am creating an open source dive computer (diydivecomputer.com) and have been looking for the simplest way of managing the battery which consists of three functions: 1) managing the charging of the battery, 2) Regulating the output to 3.3v and 3) providing accurate battery level to the processor (gas gauge).

I have not found any solutions that can do all this in one chip or for that matter, less than three (one for each of these functions). Does anyone know of a good, simple solution? I want the device to worn on the wrist so board space is at a premium. So far I am looking at Microchip's MCP73831 for charging, the TI's TPS61201 for regulating and TI's BQ27000 for "gas gauge" functionality. If you can point me in a better direction, I would appreciate it!

FYI: the device will use a 1200mAh Li-Po and use about 40ma while operating.

Re: About the Lithium-Po Battery Management

Posted: 04 Feb 2017, 01:06
by Max_DT
How many cells the battery?