8.3.7 Enable and Disable Charging
The following conditions have to be valid before charging is enabled:
- Charge is allowed (MPPSET > 175 mV)
- Device is not in undervoltage lockout (UVLO) mode and VCC is above the VCCLOWV threshold
- Device is not in SLEEP mode (that is, VCC > SRN)
- VCC voltage is lower than AC overvoltage threshold (VCC < VACOV)
- 30-ms delay is complete after initial power-up
- REGN LDO and VREF LDO voltages are at correct levels
- Thermal Shut (TSHUT) is not valid
- TS fault is not detected
One of the following conditions stops on-going charging:
- Charge is disabled (MPPSET < 75 mV)
- Adapter is removed, causing the device to enter VCCLOWV or SLEEP mode
- Adapter voltage is less than 100 mV above battery
- Adapter is over voltage
- REGN or VREF LDO voltage is not valid
- TSHUT IC temperature threshold is reached
- TS voltage goes out of range indicating the battery temperature is too hot or too cold