USB Port/AC Adapter
Lithium-Ion/Polymer Battery Charger
Typical Characteristics
Fast Charge Current vs. Temperature
(ADPSET = 8.0kΩ; USBH = 8.06kΩ)
Ω
1100
1080
1060
540
530
1.2
1.0
AAT3686
Charging Current vs. Battery Voltage
(Adapter; ADPSET = 8.06kΩ)
Ω
I
CH
ADP (mA)
1040
1020
1000
980
960
940
920
900
-50
-25
0
USBH
520
I
CH
USB (mA)
510
500
490
480
0.8
I
CH
(A)
0.6
0.4
0.2
0.0
2.5
2.9
3.3
3.7
4.1
4.5
ADP
470
460
450
25
50
75
440
100
Temperature (°C)
Battery Voltage (V)
Charging Current vs. Battery Voltage
(USBH; USBH = 8.06kΩ)
600
500
400
300
200
100
0
2.5
120
100
80
60
40
20
0
3.0
3.5
4.0
4.5
Charging Current vs. Battery Voltage
(USBL; USBL = 40.2kΩ)
Ω
I
CH
(mA)
I
CH
(mA)
2.5
3.0
3.5
4.0
4.5
Battery Voltage (V)
Battery Voltage (V)
Fast Charge Current vs. Supply Voltage
(Adapter; ADPSET = 8.06kΩ)
Ω
1200
Fast Charge Current vs. Supply Voltage
(USBH; USBH = 8.06kΩ)
Ω
600
V
BAT
= 3.3V
1000
800
600
400
200
0
4.0
4.5
5.0
5.5
6.0
500
V
BAT
= 3.3V
V
BAT
= 3.5V
V
BAT
= 3.9V
I
CH
(mA)
I
CH
(mA)
V
BAT
= 3.9V
V
BAT
= 3.5V
400
300
200
100
0
4.0
4.25
4.5
4.75
5.0
5.25
5.5
5.75
6.0
Supply Voltage (V)
Supply Voltage (V)
3686.2006.10.1.9
7
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
