Author Topic: custom LiFePO4 charging circuit help  (Read 10654 times)

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Offline billhowl

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Re: custom LiFePO4 charging circuit help
« Reply #30 on: January 02, 2010, 09:11:42 PM »
Well, digikey does have the lm3420, but what I didn't know is that it's surface mount. At the moment I have neither the means to work with surface mount nor the money to buy the tools to do so.

Hi z.s.tar.gz, I think you can replace the LM2575 with your MC34063 and the LM3420 with TL431 plus some add on circuit. please check out.

In Figure 1, an MC34063A switching regulator and an MC33342 NiMH battery-charger IC combine to generate from an unregulated power supply a 600-mA battery charger for one to four NiMH cells.

Offline z.s.tar.gzTopic starter

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Re: custom LiFePO4 charging circuit help
« Reply #31 on: January 02, 2010, 09:20:57 PM »
I've actually run into several new problems.
For the sake of copy and pasting everything again, here's my other post: http://www.societyofrobots.com/robotforum/index.php?topic=9965.0
Save yourself the typing. Just call me Zach.


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