STBCFG01 Datasheet, PDF (21/37 Pages) STMicroelectronics – Integrated current sensing resistor

STBCFG01
Operation description
If the alarm is cleared while the alarm condition is still true, the device does not generate
another interrupt: the alarm condition has to disappear and be detected again in order to
generate another interrupt.
At power-up or when the fuel gauge is reset, fuel gauge alarms are enabled and alarms are
generated after the first OCV reading and SOC estimation (if the alarm condition is true).
5.5.4
Battery swap
When the battery is removed from the system, the fuel gauge is reset to avoid providing
wrong battery information if a different battery is inserted.
In order to detect battery disconnection, the STBCFG01 monitors both the battery voltage
(VCELL+) and the voltage on RID pin connected to the battery identification resistor.
All volatile memory information is always lost when the battery voltage falls below POR
threshold.
Figure 9: Battery swap detection
5.6
Thermal shutdown
In any working condition, if the die temperature reaches the thermal shutdown threshold
(TSD = 165 °C typ.) the device enters shutdown mode: the bridge and LDO output turn off.
The fuel gauge keeps working normally. The operation is automatically restored when the
temperature falls back into the valid range. Safety timers are reset when a thermal
shutdown is triggered.
DocID026474 Rev 3
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