STBCFG01 Datasheet, PDF (18/37 Pages) STMicroelectronics – Integrated current sensing resistor

Operation description
Figure 7: Battery charger flowchart
STBCFG01
5.1.5
5.2
Battery overvoltage protection
If the battery voltage exceeds the battery overvoltage protection threshold (VBATOVP = VFLOAT
+ 100 mV) for more than tBOVP, the charging cycle stops and an alarm is generated. The
battery overvoltage protection is active only when the charger is enabled. The charger
automatically restarts when the battery voltage falls below the battery overvoltage
protection threshold.
OTG boost
The STBCFG01's internal bridge can be used in boost configuration to generate USB OTG
VBUS voltage (5 V, 500 mA).
OTG boost generator can be enabled setting the dedicated I²C enable bit (OTG_en)
according to the following conditions:
 VDCIN < VINUVLO
 CENn = high
 VCELL+ > VBATUVLO
OTG boost operation is automatically stopped if the battery voltage falls below VBATUVLO
or if CENn is pulled low during operation.
18/37
DocID026474 Rev 3