STBCFG01 Datasheet, PDF (17/37 Pages) STMicroelectronics – Integrated current sensing resistor

STBCFG01
Figure 5: DICL activation
Operation description
When a valid input source is connected to DCIN, DICL is enabled only if the input voltage is
higher than VDICL for a deglitch time (tDICL = 100 ms). The user can check the enabling
status of DICL function reading DICL status bit. Once DICL is enabled it can be disabled
through DICL_en bit.
Figure 6: DICL enable strategy
5.1.3
5.1.4
Automatic recharge
When the charging cycle is over, the device keeps monitoring the battery voltage: if the
voltage drops below the auto-recharge threshold (VRCHG = VFLOAT - 120 mV), a new
charging cycle starts to keep the battery at maximum capacity. The automatic recharge
function can be disabled through I²C.
Battery detection
The battery charger IC features a battery detection function to check if a battery is inserted
before starting the charging cycle and to make sure that charging termination is not
triggered because of a battery disconnection. If the battery is not detected when the input
voltage is valid, the device keeps running the detection sequence until a battery is inserted.
The battery detection result is reported by DET_ok bit. If the battery detection function or
RID comparator detects a battery disconnection, BAT_Fail interrupt is generated. See the
battery detection algorithm flowchart for more details.
DocID026474 Rev 3
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