Battery Charging IC which can charge 3.7V Lithium Ion Battery.

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Hello!! Everyone.
In my application, i have to charge 3.7V Lithium Ion 5000mAH Battery.
When power gets off this battery will provide power to whole circuit, which requires 2A current.

Can any one suggest me IC which can be used in this application.
I had found one ic isl9220 from intrensil but the package is too small.
So please someone suggest me an application circuit.
Thanks in advance.
 

richtek have a nice IC battery charger, you can choose the best for your application :
**broken link removed**
 

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