AAT3686_08 Datasheet, PDF (12/23 Pages) Advanced Analogic Technologies – USB Port/AC Adapter Lithium-Ion/Polymer Battery Charger

BatteryManager^TM
PRODUCT DATASHEET
AAT3686
USB Port/AC Adapter Lithium-Ion/Polymer Battery Charger
System Operation Flow Chart
OOuuttppuutt
AADDPPPP
ADP
Yes Voltage
Test
ADP > V_ADPP
No
AADDPP
LLoooopp
ADP
Power Select
USB
Yes
UVLO
Yes
V_P > V_UVLO
No
Enable
SSwwititcchh
OOnn
No
SSleleeepp
MMooddee
PPoowweer _r OOnn
RReesseett
UUSSBBLLooww
CCuurrrreennt _t LLoooopp
No _{USB Detect}
USBSEL > 0
ThTehrmeraml ^aLloop
LooEpnEanbaleble
UUSSBBHHigighh
Yes
CCuurrrreennt _t LLoooopp
Fault
Conditions Monitor ^Yes
OV, OT
Timing
No
Device Temp. Monitor
T_J > 110°C
No
Yes
Recharge Test
No
V_RCH > V_BAT
Battery
Temp. Monitor
V_TS1 <TS<V_TS2
Yes
SShhuuttdDoowwnn
MMooddee
Expire
No
BBaatttteerryy
TTeemmpp..FFaauultlt
CChhaarrggee
SSaaffeettyy
TTimimeerr
Yes
TThheerrmmaal _l LLoooopp
CCuurrrreenntt
RReedduuccttioionnininAADDPP
CChhaarrggininggMMooddee
Yes
Preconditioning Test
LLoowwCCuurrrreenntt
CCoonnddititioionniningg
Set
V_MIN > V_BAT
CChhaarrggee
No
Yes
Current Phase Test
V_CH > V_BAT
CCuurrrreenntt
CChhaarrgginingg
MMooddee
No
Voltage Phase Test ^Yes
I_BAT> I_MIN
VVooltltaaggee
CChhaarrgginingg
MMooddee
No
CChhaarrggee
CCoommppleletteedd
UUSSBBVVooltltaaggee
RReegguulalattioionn
EEnnaabblele
UUSSBBLLoooopp
CCuurrrreenntt
RReedduuccttioionnininUUSSBB
CChhaarrggininggMMooddee
Yes
No
USB Voltage Test
V_USB < 4.5V
12
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3686.2007.12.1.11