LM34936-Q1: Sample Schematic or Guide of CC-CV implement for charging

Jake Jung

Expert 1915 points

Part Number: LM34936-Q1
Other Parts Discussed in Thread: LM34936, LM5175, PMP20660

Hi.

LM34936 can be supported Constant Current(CC) with ISNS+ and ISNS-.

My customer choose this part for charging LI-Ion 3S Battery.

Vin = 8~16V, Vout=12.6V(3S Battery), Charging Current=10A or adjustable.

If you have some sample schematic or guide for charging with LM34936, please send to me.

1. When Fixed Constant Current

2. When adjustable Constant Current

And, when CC is complete, CV is not depend on LM34936?

over 4 years ago

0 Youhao Xi over 4 years ago

TI__Guru 68655 points

Hi Jake,

Thank you for posting. We have a ref design with the LM5175 (link below), in which the IC (LM5175) can be replaced with the LM34936. The package is different but they can share the same schematic. Also pay attention to the LM34936's RT pin which has different programming than the LM5175. Other than that the rest circuit can remain the same.

http://www.ti.com/tool/PMP20660

Best Regards,

Youhao

0 Jake Jung over 4 years ago in reply to Youhao Xi

Expert 1915 points

Deae Xi.

Thank you for your help.

PMP20660 is maybe fixed CC schematic.

If I need to adjust CC current, do you have some solution?

Please let me know.

0 Youhao Xi over 4 years ago in reply to Jake Jung

TI__Guru 68655 points

If you want to adjust CC current, you may consider the following approach. 8255.CC control of the LM5176.pdf

Thanks,

Youhao

Power management

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LM34936-Q1: Sample Schematic or Guide of CC-CV implement for charging