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| BQ24313 Datasheet, PDF (13/22 Pages) Texas Instruments – OVERVOLTAGE AND OVERCURRENT PROTECTION IC AND Li+ CHARGER FRONT-END PROTECTION IC | |||
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bq24313
bq24315
www.ti.com............................................................................................................................................... SLUS817A â MARCH 2008 â REVISED NOVEMBER 2008
Power Down
All IC functions OFF
FAULT = HiZ
V(IN) > V(UVLO) ? No
Yes
Reset
Timers reset
Counters reset
FAULT = HiZ
FET off
No
CE = Low ?
Any State
if V(IN) < V (UVLO),
go to Power Down
Any State
if CE = Hi,
go to Reset
V(IN) < V(OVP) ?
No
Yes
Turn off FET
FAULT = Low
No
I < IOCP ?
Yes
Turn off FET
FAULT = Low
No Incr OCP counter
No
CE = Hi ?
Yes
Go to Reset
No
count <15 ?
Wait tREC(OCP)
CE = Hi ?
Yes
Go to Reset
Turn off FET
VBAT < BATOVP ?
No
FAULT = Low
Incr BAT counter
Yes
TJ < TJ(OFF) ? No
Yes
Turn on FET
FAULT = HiZ
Turn off FET
FAULT = Low
No
count <15 ?
Figure 23. Flow Diagram
Copyright © 2008, Texas Instruments Incorporated
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Product Folder Link(s): bq24313 bq24315
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