BQ24075T Datasheet, PDF (18/29 Pages) Texas Instruments – 1.5A USB-Friendly Li-Ion Battery Charger and Power-Path Management IC

bq24075T
bq24079T
SLUS937 – DECEMBER 2009
Begin Charging
Yes
Battery short detecte?d
No
Start Precharge
/CHG= Low
VBAT > VLOWV
No
Yes
Start Fastcharge
ICHARGE set by ISET
IBAT < ITERM
No
Yes
Charge Done
/CHG= Hi-Z
No
tPRECHARGE
Elapsed?
End Charge
Flash/CHG
No
tFASTCHARGE
Elapsed?
End Charge
Flash/CHG
TD= Low
(’72, ’73 Only)
No
(’74, ’75= YES)
Yes
Termination Reached
BATTFET Off
Wait for VBAT < VRCH
No
VBAT < VRCH
Yes
Run Battery Detection
No
Battery Detecte?d
Yes
Figure 28. Battery Charging Flow Diagram
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