Li-Polymer charger

konstantinos pappas

Prodigy 30 points

Dear All,

I like to design a charger for a battery of my RC model. The battery is

Li-Polymer 11,1V 3500mah 20C

which IC form TI's protfolio i must use for linear charging?

over 14 years ago

0 Chris Glaser over 14 years ago

TI__Guru**** 150650 points

There is a battery charger selection tool here: http://focus.ti.com/paramsearch/docs/parametricsearch.tsp?family=analog&familyId=411&uiTemplateId=NODE_STRY_PGE_T

Entering a 3-cell Li-pol battery gives this page, which shows the available chargers: http://focus.ti.com/en/download/aap/selectiontools/battery-chargers/charts-htmls/bq24xxx-3cell.html

Due to the widely varying pack voltage for a 3 cell pack (from about 9V to 12.6V fully charged) and your likely high charge current (1C=3.5A), linear chargers are not the best choice for you. So, the selection tool displays all switching power supplies.

Power management

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Li-Polymer charger