BQ24090_12 Datasheet, PDF (22/34 Pages) Texas Instruments – 1A, Single-Input, Single Cell Li-Ion and Li-Pol Battery Charger

bq24090, bq24091
bq24092, bq24093
bq24095
SLUS968D – JANUARY 2010 – REVISED DECEMBER 2012
Start
BATT _DETECT
Start 25ms timer
No
Timer Expired?
Yes
Yes
Is VOUT<VREG-100mV?
Battery Present
Turn off Sink Current
Return to flow
No
Set OUT REG
to VREG-400mV
Enable sink current
Reset & Start 25ms timer
No
Timer Expired?
Yes
Yes
Battery Present
Is VOUT>VREG-300mV?
Turn off Sink Current
Return to flow
No
Battery Absent
Don’t Signal Charge
Turn off Sink Current
Return to Flow
Figure 23. Battery Detect Routine
www.ti.com
22
Submit Documentation Feedback
Copyright © 2010–2012, Texas Instruments Incorporated
Product Folder Links: bq24090 bq24091 bq24092 bq24093 bq24095