BQ24072 Datasheet, PDF (23/38 Pages) Texas Instruments – 1.2A USB-FRIENDLY Li-Ion BATTERY CHARGER AND POWER-PATH MANAGEMENT IC

bq24072, bq24073
bq24074, bq24075
www.ti.com...................................................................................................................................... SLUS810A – SEPTEMBER 2008 – REVISED DECEMBER 2008
Begin Charging
Yes
Battery short detected?
No
Start Precharge
CHG = Low
VBAT > VLOWV
No
Yes
Start Fastcharge
ICHARGE set by ISET
I_BAT < I_TERM
No
Yes
Charge Done
CHG = Hi-Z
No
tPRECHARGE
Elapsed?
End Charge
Flash CHG
No
t FASTCHARGE
Elapsed?
End Charge
Flash CHG
TD = Low
(’72, ’73 Only)
No
(’74, ’75 = YES)
Yes
Termination Reached
BATTFET Off
Wait for VBAT < VRCH
No
V_BAT < V_RCH
Yes
Run Battery Detection
Battery Detected? ^No
Yes
Figure 40. Battery Charging Flow Diagram
Copyright © 2008, Texas Instruments Incorporated
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