STBCFG01 datasheet(21/37 Pages) STMICROELECTRONICS

21 / 37 page

STBCFG01

Operation description

DocID026474 Rev 3

21/37

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.

STBCFG01 bảng dữ liệu(PDF) 21 Page - STMicroelectronics