[SOLVED] MC33340/2 alternative

[Tomas1707]

After using battery controller MC33340 for constructing NiMH charger as a part of some portable devices for quite some time, I have found out, that this IC is no longer manufactured and a lot of IC manufacturers are ending with production of NiMH charging ICs. After a lot of hours of searching, I didnt´t find any direct alternative with such a simple implementation and dV/dt battery charging temination. Does anybody knows some IC with similar capabilities - 2 cells NiMH dV/dT and timeout termination, driving linear and switching sources?

 

[Vitafuris]

Hello,

The LTC4010 of linear technology (sorry I cannot post links, this is my first post ;-)) may be what you are looking for.

 

[Tomas1707]

Thank you, Vitafuris,
this IC looks promising. Do you have some experience with this IC?

 

[Vitafuris]

We will be using it in one of our product. So far we just created a test board to verify that it fits our specs. And we had no problem with it.

 

[Tomas1707]

I've just check it and it is a very good alternative and with a lot of functionality, but the negative parameter of this IC is the price, which is almost ten times higher then of MC33340 :-(

 

[Tomas1707]

I finally found a solution in TI BQ2000. A bit of playing when you need a high side current sensing, but it has an integrated switching power supply controller and a very reasonable price.