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The following conditions have to be valid before charging is enabled: • ISET pin above 120 mV. • Device is not in UVLO mode (that is, V AVCC > V UVLO ). • Device is not in SLEEP mode (that is, V AVCC > V SRN ). • OVPSET voltage is from 0.5 V to 1.6 V to qualify the adapter. • 1.5-s delay is complete after initial power up. • REGN LDO and VREF LDO voltages are at correct levels. • Thermal Shutdown (TSHUT) is not valid. • TS fault is not detected. • ACFET turns on (see System Power Selector for details). One of the following conditions stops ongoing charging: • ISET pin voltage is below 40 mV. • Device is in UVLO mode. • Adapter is removed, causing the device to enter SLEEP mode. • OVPSET voltage indicates the adapter is not valid. • REGN or VREF LDO voltage is overloaded. • TSHUT temperature threshold is reached. • TS voltage goes out of range, indicating the battery temperature is too hot or too cold. • ACFET turns off.
