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Need a suitable charger IC

Thread starter #1
Hello there,

My application need a battery management charger IC.
Take a look the design layout,

charger_ic.PNG

1. A micro USB connector from smart phone to PC or power adapter will be use.
2. From this USB connector VBUS will be supply power to my external system through the battery charging IC.
3. This IC will manage the 5V , 2A power from adapter but, in quick charging mode, 9V, 2A power should be block by the management IC.


Kindly suggest a circuit and IC application.
 
#2
This part might put you in the right direction:
http://www.linear.com/product/LTC4020

This will take 4.5V upto 55V on the input, provide whatever output voltage you need to power your system, and whatever you need (within reason) to charge your battery stack. You are then not limited to a 4.2V Li+ battery (you can go higher) or 3v3 system voltage (you can go higher or lower)

Simon
 

Ian Rogers

User Extraordinaire
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Most Helpful Member
#3
Thread starter #4
This part might put you in the right direction:
http://www.linear.com/product/LTC4020

This will take 4.5V upto 55V on the input, provide whatever output voltage you need to power your system, and whatever you need (within reason) to charge your battery stack. You are then not limited to a 4.2V Li+ battery (you can go higher) or 3v3 system voltage (you can go higher or lower)

Simon
Thank you sir Simon.
Its a reasonable IC because it has sensing current application.
I am looking for a quick charging mode in this application.
At this moment, I am going through this http://www.ti.com/product/BQ24266.

If you look deep this diagram, QC or PD adapter will release nearly 2A current.
In quick charging mode my system circuit need 0.40 amp current other 1.30 A will go to smart phone.

Regards
Hasan
 

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