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BQ25172: The difference between Standby input current (IN) with charge terminated and Quiescent input current (IN)

Shoo Saga
Intellectual 1446 points
Part Number: BQ25172

Hi team,

My customer asked  doesn't Vout pin sink any current except  Quiescent output current?

In case Vin = 5V and charge terminated, Vin sink Quiescent input current  and Standby input current (IN) with charge terminated.

I guess  Quiescent input current is a leak current, however Standby input current (IN) with charge terminated is a current for internal circuit.

In case Vin = 0V  that means shutdown mode, an Internal circuit doesn't need any current.

So the datasheet only defines Quiescent output current.

Am I understanding correct?

Thanks,

Shoo

  • +1
    TI__Guru 65746 points

    Ho Shoo

    "My customer asked --- doesn't Vout pin sink any current except  Quiescent output current?"  --- Bill J -- Vout will only sink Quiescent output Current, typical 350nA

    "In case Vin = 5V and charge terminated, Vin sink  Quiescent input current  and Standby input current (IN) with charge terminated." -- Bill J -- Yes, internal circuit active, typical 230uA 

    "I guess  Quiescent input current is leak current, however Standby input current (IN) with charge terminated is current for internal circuit."--Bill J -- Yes, some circuits are active after termination

    "In case Vin = 0V  that means shutdown mode, Internal circuit doesn't need any current for internal circuit." --- Bill J -- Yes, in this case the internal circuits are not needed, and Vout Quiescent current (sink from battery) is 350nA.

    "So the datasheet  only defines Quiescent output current."--- Bill J -- we do have values for both Input and Output in data sheet.