Datasheet

DocID024654 Rev 2 13/29
STNS01 Functional pin description
Figure 16. Shutdown mode entry and exit (not to scale, deglitch times not included)
Pin 5: CHG
Active-low open-drain charging/fault flag. This pin is active when the charging process is
ongoing and toggles at 1 Hz if a fault condition has been detected. Refer to Table 8 for more
details. This pin is active only when a valid voltage is connected to the IN input (V
UVLO
< V
IN
< V
INOVP
).
Pin 6: CEN
Charger enable pin. A logic low level on this pin disables the battery charger. A transition
from high to low and then back to high restarts the charger when the charge cycle has been
stopped for one of the following reasons:
– Charging timeout (pre-charge, fast-charge)
– Battery voltage below V
PRE
after the fast-charge has already started
– End of charge
The CEN pin has no effect if the charge cycle has been stopped for a battery overcharge
condition.
Table 8. CHG pin state (V
UVLO
< V
IN
< V
INOVP
)
Device state CHG pin state
Not charging High Z
Charging Low
Battery temperature fault Toggling
Overcharge fault Toggling
Charging timeout (precharge, fast charge) Toggling
Battery voltage below V
PRE
after the fast charge starts Toggling
AM10402v1
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Shutdown
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Shutdown
V
BAT
V
IN
SD
V
ODCR
V
ODC
V
INOVP
V
UVLO