Datasheet

bq24100, bq24103, bq24103A
bq24104, bq24105, bq24108, bq24109
bq24113, bq24113A, bq24115
www.ti.com SLUS606O –JUNE 2004–REVISED MARCH 2010
Figure 13. Battery Detection Waveform When a Battery is Inserted
Figure 14 shows the battery detection scheme when a battery is removed. Channel 3 is the output signal and
Channel 4 is the output current. When the battery is removed, the output signal goes up due to the stored energy
in the inductor and it crosses the V
OREG
– V
RCH
threshold. At this point the output current goes to 0A and the IC
terminates the charge process and turns on the I
DISCHG2
for t
DISCHG2
. This causes the output voltage to fall down
below the V
OREG
– V
RCHG
threshold triggering a Battery Absent condition and starting the battery detection
scheme.
Figure 14. Battery Detection Waveform When a Battery is Removed
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bq24115