regards about current
set-up current? output current? Battery current?
the goal is for a 3v6 1 cell Li-on Battery
Tnx!!
- posted
10 years ago
How do i choose a IC Battery Charger ?
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- posted
10 years ago
You mean like one of these ?
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-- Regards, Adrian Jansen adrianjansen at internode dot on dot net Note reply address is invalid, convert address above to machine form.
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- posted
10 years ago
Please note that Li-ion batteries are very delicate, and the charger must be sophisticated enough to handle the constant current and constant voltage phases of the charging cycle precisely. Hope that helps.
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- posted
10 years ago
"very" and "precisely" overstate the problem. A better word would be "reliably". Charger ICs are quite common and cheap. There is little reason to roll your own and more than a million reasons[*] not to.
[*] US lawyer population- Vote on answer
- posted
10 years ago
Google for MCP73831.
Caution it's a very small package 2x3mm QFN or SOT-23-5.
An application is here:
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I have many of these boards in my projects.
hamilton
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- posted
10 years ago
He said 3.6v, which probably means LiFePO4. I just got some MCP73123 for that purpose, and made an Eagle footprint to allow hand-soldering. Will let you know how I go.
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- posted
10 years ago
Will you share your Eagle footprint ?
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- posted
10 years ago
Sure - but I don't have it in a separate library. Try editing the following XML text into your of your LBR files.
The footprint has an elongated via as well as the heatpad, so I could locate a drill hole to help solder it from the rear. I wanted to make the hole bigger without making the pad bigger, but Eagle says naaah. You can drop the extra via.
Clifford Heath
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MCP73123
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- posted
10 years ago
Thank you all
this work for us
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:
3123
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- posted
10 years ago
Except that it's nearly twice the price, almost no-one has stock, and you have to program your 3.6V termination with external resisters instead of getting it free. Oh, and it doesn't do the three-stage charging that's needed to get best results from a Li cell. Not a good alternative, I don't think.