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BQ24780S: About Charge Overcurrent Protection

Tomoya Yoshino
Prodigy 60 points
Part Number: BQ24780S

Hello experts.

The data sheet says "The charge OCP threshold is automatically set to 6, 9, and 12 A on a 10-mΩ current sensing resistor based on charge current register value."

Could you tell me the threshold to be set to 6, 9, and 12 A?

【charge current】　　　　【OCP】

　　　2.8A　　　　→　6A?　9A？　12A？

　　　1.3A　　　　→　6A?　9A？　12A？

　　　0.8A　　　　→　6A?　9A？　12A？

　　　0.5A　　　　→　6A?　9A？　12A？

　　　0.3A　　　　→　6A?　9A？　12A？

Thanks and best regards.

Tomoya Yoshino

  • +1
    TI__Expert 7046 points

    Hello Tomoya,

    Please refer to section 6.5 Electrical Characteristics of the datasheet:

    I can not give you the exact OCP charge thresholds, However you can use this chart to get a good estimate on what the OCP Charge thresholds are.

    0mA-4032mA =6A

    4096mA-6080mA=9A

    6144mA-8128mA=12A

    Best Regards

    Christian.