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Hi Team,
My customer has a problem when use BQ25170 STAT pin to show charging status.
The STAT pin will blink under fault condition, which means MCU can't just trigger a high level voltage on STAT pin to know fully charged. It may be a fault signal. They can't connect a LED on that pin to show the status either because system structure requirement.
From my understanding, if customer want to distinguish Full charge and Fault status, MCU need to monitor STAT pin for >2 seconds to see if it's constant high voltage. That's a waste for MCU resource.
Competitor's device has two pin to show charging and full charge separately. So it's easy for charger to trigger MCU. Could you do it the same way?
Thank you!
Hello Marc,
We have BQ25171-q1 which provides two stat pins, does not use the flashing indication like bq25170. Which competitor device were they considering?
Thanks,
Nick
Hello
This is the correct behavior for BQ25170 STAT pin:
1.) Charge in progress -- Low
2.) Charge complete -- High
3.) Fault -- Blink at 1Hz rate
If the customer has an MCU with I2C one of our BMU devices may be a better fit, see BQ2512X or BQ2515X.
Hi Nick,
Thanks for recommendation. Competitor is LP4073 from Low Power Semi(LPS).
Does BQ25171 have non Q1 version? Cost is also sensitive.
Thank you!
Marc
Hi Bill,
Sorry 2512x or 2515x is too complex for E-cig application and customer need >0.8A current. Thanks for your recommendation.
Marc
Hi Marc,
We do not have a non-automotive version of bq25171-q1
Best regards,
Nick