BQ24250C_15 Datasheet, PDF (17/46 Pages) Texas Instruments – bq24250C 2A Single Input I2C, Standalone Switch-Mode Li-Ion Battery Charger with Power-Path Management

www.ti.com
Feature Description (continued)
Enter Battery
Detection
bq24250C
SLUSBY7 – JULY 2014
BATREG = Vreg
setting – 480 mV
VBAT >
Yes
BATREG+120 mV?
No
No
32 ms Timer Expired?
Yes
No
32 ms Timer Expired?
Yes Battery Detected, STAT
register updated, and PTM
mode aborted (if enabled)
BATREG = 4.2 V
Yes
VBAT < 4.08 V?
No
No
32ms Timer Expired?
Yes
ONLY ON FIRST LOOP ITERATION
“No Battery” Condition
BATREG = 4.2 V
Update STAT Registers and send Fault Pulse
No
Yes Battery Detected, STAT
32 ms Timer Expired?
register updated and
Exit Battery Detection
Yes
Force PTM = 1?
No
BATREG = 3.72 V
Yes
VBAT > 3.84 V?
No
Enter PTM mode
Exit Battery Detection
No
Yes Battery Detected, STAT
32 ms Timer Expired?
register updated and
Exit Battery Detection
No
32 ms Timer Expired?
Yes
Figure 14. AnyBoot Battery Detection Flow Diagram
Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: bq24250C
Submit Documentation Feedback
17