aoz1401 Alpha & Omega Semiconductor, aoz1401 Datasheet - Page 9

• Manufacturer Part Number: aoz1401
• Description: Li+ Charger Protection Ic
• Manufacturer: Alpha & Omega Semiconductor

Flow Chart
Rev. 1.0 July 2010
Power Down
All IC functions
OFF
FAULTB = Hi-Z
Reset
Timers reset
Counters reset
FAULTB = Hi-Z
FET off
Turn on FET
FAULTB = Hi-Z
Yes
T
ENB = Low?
J
I <IOCP?
V
BATOVP?
< T
VIN >V
(UVLO)?
VIN <V
(OVP)?
BAT
?
J (OFF)
<
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
Turn off FET
FAULTB = Low
Turn off FET
FAULTB = Low
Turn off FET
FAULTB = Low
Incr BAT counter
Turn off FET
FAULTB = Low
Incr OCP counter
No
No
www.aosmd.com
ENB = Hi?
Count <15
Count <15
ENB = Hi?
?
?
No
No
Yes
Yes
Yes
Go to Reset
Go to Reset
Wait t
ON(OCP)
Any state
If VIN <V (UVLO),
go to Power Down
Any state
If ENB = Hi,
go to Reset
AOZ1401DI
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