STBCFG01 datasheet(18/37 Pages) STMICROELECTRONICS

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Operation description

STBCFG01

18/37

DocID026474 Rev 3

Figure 7: Battery charger flowchart

5.1.5

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.

5.2

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.

STBCFG01 bảng dữ liệu(PDF) 18 Page - STMicroelectronics