JAJSEC4E September 2012 – January 2018 BQ24157
PRODUCTION DATA.
The STAT pin is used to indicate operation conditions. STAT is pulled low during charging when EN_STAT bit in control register (00H) is set to “1”. Under other conditions, STAT pin behaves as a high impedance (open-drain) output. Under fault conditions, a 128-µs pulse will be sent out to notify the host. The status of STAT pin at different operation conditions is summarized in Table 1. The STAT pin can be used to drive an LED or communicate to the host processor.
CHARGE STATE | STAT |
---|---|
Charge in progress and EN_STAT=1 | Low |
Other normal conditions | Open-drain |
Charge mode faults: Timer fault, sleep mode, VBUS or battery overvoltage, poor input source, VBUS UVLO, no battery, thermal shutdown | 128-μs pulse, then open-drain |
Boost mode faults: Timer fault, over load, VBUS or battery overvoltage, low battery voltage, thermal shutdown | 128-μs pulse, then open-drain |