Datasheet

PORorRECHARGE
Enable 125 mA Charge,
Start 0.5stimer
VFB > V
RECH
No
BatteryPresent,
BeginCharge
0.5stimer
expired
Yes
No
Yes
Disable 125 mA
Charge
Apply 8 mA discharge
current, start 1stimer
VFB < V
LOWV
No
BatteryPresent,
BeginCharge
1stimer
expired
Yes
No
Yes
Disable 8 mA
dischargecurrent
Thebatterydetectionroutinerunson
powerup, orifVFBfallsbelowVRECH
duetoremovingabatteryor
dischargingabattery
Battery Absent
bq24630
www.ti.com SLUS894A –JANUARY 2010– REVISED OCTOBER 2011
BATTERY DETECTION
For applications with removable battery packs, the bq24630 provides a battery-absent detection scheme to
reliably detect the insertion or removal of battery packs.
Figure 21. Battery Detection Flowchart
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Product Folder Link(s): bq24630