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AS3701 数据表(PDF) 25 Page - ams-OSRAM AG |
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AS3701 数据表(HTML) 25 Page - ams-OSRAM AG |
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25 / 110 page ![]() Page 24 ams Datasheet Document Feedback [v1-11] 2016-Dec-14 AS3701 − Detailed Description – Power Management Functions Figure 30: Linear Charger Modes Charging Modes: This figure describes the 4 different charger modes. Power Path & Current Limiter Linear Charger USB VSUP VBAT VSUP 1uF USB input Power Path & Current Limiter Linear Charger USB VSUP VBAT VSUP 1uF USB input Power Path & Current Limiter Linear Charger USB VSUP VBAT VSUP 1uF USB input Power Path & Current Limiter Linear Charger USB VSUP VBAT VSUP 1uF USB input Battery System Battery System Battery System Battery System No charger is connected, all the power comes out of the battery. Charging is active. All the power comes from the USB through the current limiter. If the system current exceeds the choosen USB current limit, the charging current get reduced automatically. ISYS ICHG 300mA IBAT IBAT 200mA When battery is fully charged, the switch opens to disconnect the battery. All the power comes from the USB. Charging is disabled. If the system current exceeds the choosen USB current limit, the additional needed current will be provided the battery. IUSB > 500mA ISYS 200mA ISYS 700mA ISYS 200mA IUSB > 500mA IUSB > 500mA |
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