AAT3690 Datasheet, PDF (11/20 Pages) Advanced Analogic Technologies – 1.0A USB Port/Adapter Lithium-Ion/Polymer Battery Charger

System Operation Flow Chart
AAT3690
1.0A USB Port/Adapter
Lithium-Ion/Polymer Battery Charger
PoPwoewreOr nOn
ReRseestet
ADP
Loop
ADP
Power Select
USB
Yes
UVLO
Yes
V_P > V_UVLO
No
Enable
Switch
On
No
SlSeelepep
MModoede
USB Loop
Thermal
Loop Enable
No
Timing
Fault
Yes
Conditions Monitor
OV, OT
No
Yes
Shutdown
Mode
Battery
Temp. Monitor
V_TS1 < TS < V_TS2
No
Battery
Temp. Fault
Expire
Charge
Safety
Timer
Device Temp. Monitor
T_J > 110°C
Yes
Thermal Loop
Current
Reduction in ADP
Charging Mode
Set
Yes
Yes Current
No
Recharge Test
Current Phase Test
Charging
V_RCH > V_BAT
V_EOC > V_BAT
Mode
No
Yes
Voltage Phase Test
I_BAT > I_TERM
Voltage
Charging
Mode
No
Charge
Completed
USB Voltage
Regulation
Enable
USUBSBLoLoopop
CuCrurerrnetnt
ReRdeudctuiocntioinn UinSUBSB
ChCahrgairngginMg oMdoede
Yes
No
USB Voltage Test
V_USB < 4.5V
3690.2007.01.1.2
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