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BQ24160 - Charging Done

Candemir Orsan
Prodigy 20 points
Other Parts Discussed in Thread: BQ24160

Can you please help explain the following behavior:

Using the BQ24160 w/ single cell LiPo battery. Charging the battery from IN source (5V) with the following main settings:

Charge Current: 1.2A  (batt capacity is 1.4Ah)

Termination Current: 50mA 

Batt Regulation Voltage: 4.2V

Safety Timer: 9hrs

I perform the following steps:

1. Discharge battery half way and start charging. Status register is 0x30 -> "Charging from IN" as expected.

2. Charging completes: Micro receives interrupt and status register is 0x50 -> "Charge Done" as expected.

3. If IN source is unplugged and plugged back in after ~20sec., the charger starts charging again: Status register is 0x30 again.

BUT I can see that no current is going into the battery and the charger will stay in this state indefinitely. (i.e. status = 0x30)

Is this expected behavior?

Thanks.