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STBCFG01 数据表(PDF) 18 Page - STMicroelectronics |
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STBCFG01 数据表(HTML) 18 Page - STMicroelectronics |
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18 / 37 page  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. |
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