BQ35100: BQ35100

Hello, Thanks for your reply. Could you please clarify more what you mean by regular applications? What I have is an end-user product powered by a non-rechargeable battery pack of (5-10V) AA Alkaline and Lithium, every single battery is 1.5v, do you recommend any reference design that can be used for at least for AA alkaline liFeS2, do you recommend automotive designs, or BQ76920 or bq35100 or...

Automotive products typically have higher operating temperature ranges and undergo additional tests compared to consumer products.

Please check all the specifications and ratings to make sure bq35100 can operate reliably for your application.

Hello Shirish, Thanks, so you recommend bq35100, I will check all the specifications, and if I can use it with Bus-Powered Multifunction DAQ USB Device.

Thanks, I have more questions if possible just before I start the design:

If I use bq35100, is it possible to read voltage/current measurements for 4 batteries as one block and at same time the readings for every cell in this block? 

I checked some of Ti resources, and found BQ76920 can be used for monitoring, is it possible to use this to monitor the current/voltage of Alkaline instead of Guage bq35100?

Any other options that can be used to extract battery voltage/current readings without using bq35100?

Thanks! yes I see bq40z50  "Fully Integrated 1-Series, 2-Series, 3-Series, and 4-Series Li-Ion or Li-Polymer Cell Battery Pack Manager and Protection. I'm wondering if it supports AA  Alkaline battery?

What is the recommendation for mixing parallel/ series battery back (e.g. a pack of 6 cells every three connected in series, then output two series-connected in parallel)?
Note: interested in readings for every individual cell, 3 series cells and for the whole pack.

Good, so the threshold 2.2V just for pack, not for every cell? since the voltage level for cell is less than 2.2V. 

The designed board will be used with Bus-Powered Multifunction DAQ USB Device, at which interface can I get battery voltage and current reading? is it SMBD/SMBC?

Thanks for the help Shirish, will start designing using bq40z50 . at the same time will design another board for the same purpose without using bq40z50 to compare the results from both boards, for the second case( without using bq40z50 ) the board I will design includes batteries holder, the product will be connected with these batteries as load, so will measure the voltage of these batteries direct individually and as a pack through having test points connected with DAQ. I have a question regarding current readings, I think there is a need to use voltage to a current converter or current sensing amplifier, do you have any recommendations or reference designs for this purpose?

Thanks, I checked the link you sent, there are many options, its tricky to select, maybe you can redirect me to the correct option, I think I need a high-side sensing option, I have 6 batteries (1.2V each) for every 3 cells connected in series, another cell also connected in the same way, and by the end, I have a parallel connection which will feed the product with power(4.6-5V). The maximum current for this product could reach 900mA and the minimum 50mA. So will connect the shunt resistor and diode in series with the first 3 cells which are connected in series and check the current at this point through using the prober amplifier. The same thing for the other 3 cells, the same when the 2 series rails are connected in parallels, so I think I will need 3 amplifiers. Do you have any recommended amplifier for this scenario?