Schematic help needed ?

Thread Starter


Joined Jan 17, 2016
Hello Friend ,

I am not sure how this will wotk.
Could anybody help me out here ?

My queries are ?

1. When i connect charger, how battery negative will get connected with charger ?
2. How mosfet will conduct if drain is connected with battery negative and source is connected to charger minus ?
3. What is use of Vm pin in this circuit.
4. Where should i connect Vm pin , Is the current connection is correct ?
5. What if Vm pin is NC ?

Thanks in Advance !!!


Audioguru again

Joined Oct 21, 2019
The Chinese protection IC datasheet is very complicated maybe due to poor translating into English. Use a Western IC from an English-speaking country instead.