AAT3685-1 Advanced Analog Technology, Inc., AAT3685-1 Datasheet - Page 12

• Manufacturer Part Number: AAT3685-1
• Description: Lithium-Ion/Polymer Battery Charger
• Manufacturer: Advanced Analog Technology, Inc.

System Operation Flow Chart
12
12
BatteryManager
BatteryManager
No
Recharge Test
TM
TM
V
RCH
> V
BAT
Sleep
Mode
Yes
Yes
Preconditioning Test
Current Phase Test
Temperature Monitor
Voltage Phase Test
Conditions Monitor
V
TS1
Completed
V
V
Power On
I
w w w . a n a l o g i c t e c h . c o m
w w w . a n a l o g i c t e c h . c o m
BAT
No
EOC
No
No
Charge
MIN
OV, OT
Battery
< TS < V
Reset
Fault
No
> I
> V
> V
No
TERM
BAT
BAT
TS2
V
P
Switch
UVLO
> V
Yes
Yes
Yes
On
No
Yes
UVLO
Current Loop
Current Loop
Conditioning
Low Current
Temp. Fault
Shut Down
SETH
SETL
Charging
Charging
Charge
Battery
Voltage
Current
Mode
Mode
Mode
Lithium-Ion/Polymer Battery Charger
Lithium-Ion/Polymer Battery Charger
Yes
0
1
Input Power
PWRSEL= ?
Input Detect
PRODUCT DATASHEET
PRODUCT DATASHEET
V
ADP/USB
Input Voltage
Voltage Test
Regulation
Reduction
Current
Charge
Enable
< V
Port
ADP/USB_CHR
Yes
AAT3685
AAT3685
No
3685.2007.12.1.4
3685.2007.12.1.4