ZHCSTK2 October 2023 BQ25185
PRODUCTION DATA
The device has two open drain configuration status pins (STAT1 and STAT2) which can be externally pulled up and either be connected to an LED or an IO pin of an MCU to be able to inform the host or the user on the charger status.
When there is no battery present, the device will charge the capacitor on the BAT pin and toggle between charging done, charge completed. So STAT1 pin will be stable where as STAT2 pin will toggle between HIGH and LOW.
| CHARGING STATE | STAT1 PIN STATE | STAT2 PIN STATE |
|---|---|---|
|
Charge completed, charger in sleep mode or charge disabled (including VBAT >VRCH) |
HIGH |
HIGH |
|
Normal Charge in progress (including automatic recharge) |
HIGH |
LOW |
|
Recoverable fault (VIN_OVP, TS HOT, TS COLD, TSHUT, System Short protection) |
LOW |
HIGH |
|
Non-recoverable or latch-off fault (ILIM/ISET pin short, BATOCP, Safety TMR_EXP for charging) |
LOW |
LOW |