From: RussellMc <apptechnz@gmail.com>
To: Microcontroller discussion list - Public. <piclist@mit.edu>
CC: ApptechNZ <apptechnz@gmail.com>, "ken@elecsyn.com" <ken@elecsyn.com>
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Date: Sun, 11 Oct 2020 18:45:37 -0700
Subject: Re: [EE] Looking for equivalent IC to HT4928S Lithium Ion Charger
Thread-Topic: [EE] Looking for equivalent IC to HT4928S Lithium Ion Charger
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Many of the powerbank ICs are potentially suitable.
Finding them is another matter:

HT4928 allegedly available here
China / HK but mentions manufacturers in Europe & US
https://www.jotrin.com/product/parts/HT4928S

MP2637
QFN
https://www.monolithicpower.com/en/documentview/productdocument/index/versi=
on/2/document_type/Datasheet/lang/en/sku/MP2637/document_id/1441
Digikey $3.45/1
https://www.digikey.com/en/products/filter/pmic-battery-chargers/781?s=3DN4=
IgTCBcDaILIAUwDYDMB2EBdAvkA

Here is a list of IPxxxx devices

   http://www.injoinic.com/product_detail/id/21.html?lang=3Den-us

Datasheet links at right - many live.
Some of the "English" ones are in Chinee. Some in English
Examples only:

ESOP8
http://www.injoinic.com/wwwroot/uploads/files/20200221/b4bef990cae89a87fc31=
80cc3b76b833.pdf

ESOP16
http://www.injoinic.com/wwwroot/uploads/files/20200221/5edb08a79152c9ee2ca8=
ea29a5d5ad25.pdf

IP5330 - 19 pages in English
3A charge / discharge. 92%+ claimed efficiency.
150 uA standby.


http://www.injoinic.com/wwwroot/uploads/files/20200221/cefcc6a7321517587740=
84f3149eed3b.pdf


    Russell



On Fri, 9 Oct 2020 at 19:33, Jim Ruxton <jim.ruxton@gmail.com> wrote:

> I was wondering if anyone has come across an IC that is more readily
> available than the Hotchip HT4928S discussed here :
> http://blog.pagefault-limited.co.uk/hotchip-ht4928s-ver1-1-english-pdf
> but is functionally equivalent.
>
> What is special about it is that as well as the necessary charging
> functions it has boost circuitry (with an added inductor ) to supply 5
> volts directly from the charged LiIon battery.  I could design my board
> with any number of charging ICs followed by a voltage booster but it's
> nice that it's all in one chip.
>
> Thanks for any tips.
>
> Jim
>
--=20
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