BQ25100H_15 Datasheet, PDF (21/32 Pages) Texas Instruments – bq2510x 250-mA Single Cell Li-Ion Battery Chargers, 1-mA Termination, 75-nA Battery Leakage

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Device Functional Modes (continued)
bq25100, bq25101, bq25100A, bq25100H, bq25101H, bq25100L
SLUSBV8C – AUGUST 2014 – REVISED NOVEMBER 2014
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
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Product Folder Links: bq25100 bq25101 bq25100A bq25100H bq25101H bq25100L