Tool/software:
Hello:
The customer encountered a case of BQ24133 charging anomaly. The abnormal phenomenon was that STAT reported an error, output a 0.5Hz square wave, and the external indicator light flashed.
1. Current investigation:
Currently investigating the abnormalities that may be caused by the specification: INput over-voltage, Battery over-voltage, battery absent, they are all normal.
In addition, I would like to ask whether the timer fault may cause anomalies? What is the reason?
Or are there any other situations that can trigger the abnormality?
2. It is currently found that the faulty device will cause problems when paired with a specific battery, but replacing the faulty device and the battery that can trigger the fault with other devices can charge normally.
What needs to be checked about the battery detection part? Thank you! ! !
Attached hardware design schematic diagram
