AAT3685
Lithium-Ion/Polymer Battery Charger
Typical Characteristics
Fast Charge Current vs. Temperature
(SETH; SETH = 3.83kΩΩ)
Charging Current vs. Battery Voltage
(SETH; SETH = 3.83kΩ)
1200
1000
800
600
400
200
0
1100
1080
1060
1040
1020
1000
980
960
940
920
900
-50
-25
0
25
50
75
100
2.5
3
3.5
4
4.5
Temperature (°C)
Battery Voltage (V)
Charging Current vs. Battery Voltage
(SETL; SETL = 40.2kΩΩ)
Fast Charge Current vs. Supply Voltage
(SETH; SETH = 3.83kΩΩ)
1200
120
100
80
60
40
20
0
VBAT = 3.3V
1000
800
600
400
200
0
VBAT = 3.9V
VBAT = 3.5V
4
4.25
4.5
4.75
5
5.25
5.5
5.75
6
2.5
3
3.5
4
4.5
Battery Voltage (V)
Supply Voltage (V)
Fast Charge Current vs. Supply Voltage
(SETL; SETL = 40.2kΩ)
Fast Charge Current vs. Supply Voltage
(SETH; SETH = 3.83kΩΩ)
120
1200
1000
800
600
400
200
0
0°C
VBAT = 3.5V
VBAT = 3.9V
100
80
60
40
20
0
70°C
25°C
VBAT = 3.3V
4
4.5
5
5.5
6
6.5
4.40
4.50
4.60
4.70
4.80
4.90
5.00
Supply Voltage (V)
Supply Voltage (V)
3685.2006.10.1.3
7
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
