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bq24725A/about SRP and SRN resistor

Tsukui Yusuke
Guru 21930 points

Hi,

Could you tell me about bq24752A SRP and SRN pin?
I got the following question from a customer.

1.May I change sense resiser lower it than 10mΩ?
   ex.)Customer target is 5mΩ.

2.When customer use a low Rsr,
   Is there a thing customer should pay attention to?

3.In the case of 5mΩ sense resistor,
   The charge current register and input current register is twice as amperage as a 10mΩ resistor.
   Is my understanding correct?
   bq24752A.pdf

Best regards,
Yusuke/Japan Disty




  • 0
    TI__Guru 56650 points
    1.Yes. The sense resiser can be changed to a lower value.


    2.The charge current accuarcy is changed for same charging current.

    3. Yes. In the case of 5mΩ sense resistor, the charger and input current is twice as amperage as a 10mΩ resistor.