BQ24100_10 Datasheet, PDF (21/40 Pages) Texas Instruments – SYNCHRONOUS SWITCHMODE, LI-ION AND LI-POLYMER CHARGE-MANAGEMENT IC WITH INTEGRATED POWER FETs ( bqSWITCHER™)

www.ti.com
bq24100, bq24103, bq24103A
bq24104, bq24105, bq24108, bq24109
bq24113, bq24113A, bq24115
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
Copyright © 2004–2010, Texas Instruments Incorporated
Submit Documentation Feedback
21
Product Folder Link(s): bq24100 bq24103 bq24103A bq24104 bq24105 bq24108 bq24109 bq24113 bq24113A
bq24115