The following conditions have to be valid before charging is enabled:
• ISET pin above 120 mV.
• Device is not in UVLO mode (that is, VAVCC > VUVLO).
• Device is not in SLEEP mode (that is, VAVCC > VSRN).
• 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)
