Need advice choosing Li-Ion recharger IC

Discussion in 'The Projects Forum' started by Gaudeamos, Jul 15, 2013.

  1. Gaudeamos

    Thread Starter New Member

    Jun 24, 2013
    15
    2
    I'm planning to power a portable device with a pair of non-removable cell phone (Li-Ion) battery packs, which will be recharged using a micro-USB wall wart. That calls for charging circuit with DC-DC boost conversion. I have ZERO experience working with either battery charging ICs or with SMPS's.

    I could use advice/help in moving forward from someone who's done this before / does this all the time.
    I feel overwhelmed by the volume of choices out there. Can anyone recommend a part that would be appropriate for an SMPS newbe (I'm in the pre-newbe wannabe class)? For prototyping I'd like to work with something in a DIP, SOIC or SOT-23 package (in that order of preference).

    My current frontrunner is BQ2000T:
    http://www.ti.com/lit/ds/slus149d/slus149d.pdf http://www.ti.com/lit/an/slua064b/slua064b.pdf. It looks like a simple and flexible device suited to the job, and perhaps to the developer. The design note contains a buck/boost sample circuit which I don't understand. To me it basically looks like it has classic buck topology.

    Any guidance would be appreciated. Thanks.
     
    Last edited: Jul 15, 2013
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