Need help for lead acid battery charger

look at the bq2031

thank you sir. i searched and ot some ic's like

BQ24450,UC3909,UC3906,bq34z110 ic's which is related to this. and one more which one u r talking about.

so which is best now in terms of reliable and cost efficient.

Please look at the bq2031

http://www.ti.com/lit/gpn/BQ2031?keyMatch=bq2031&tisearch=Search-EN

the bq24450 is a charger for Nickel and really does not have the termination routine for lead acid.

The UC3906 is a linear lead acid charger for low power.

The bq3909 is a switcher lead acid charger for higher power.

I believe the bq34z is a gas gauge product.

Linear chargers at typcally the lowest cost until the power increases where the heat sinks start to cost more than the cost of the LC for the switcher.

thank you sir

https://drive.google.com/file/d/0B0jPZMWVq7PMcy04dlNlcU9EY2NXaHU1Vng5NjMtQklrR3dj/edit?usp=sharing

this is my battery. will it work with this. and please provide circuit diagram for the same.

It should be fine.

Yes sir but please provide circuit diagram because i am not getting any detail.

See the application notes under the BQ2031, there are some example schematic there.

A comment for TI's product engineering - The BQ2031 specifications really need to be improved, the documents are not well organized and should include at least one sample application schematic as do most other TI specs.

Get it updated Lead Acid batteries still are getting used --- where weight and size are not a big deal they are cheap energy storage.

Jerry Twomey
Cell: 760-522-5090
jerry@effectiveelectrons.com
Web Site:
http://www.effectiveelectrons.com
Electronic Design Column:
http://www.electronicdesign.com/author/jerry-twomey

Hi There,

Just would like to check how to implement low battery cut off circuit for 12V/7.5AH base on DV2031S2. Can someone advise on this?

Vin:24V

Cell: 6 cell(12V)

cut off: 11V

MD