AAT3688
USB Port Lithium-Ion/Polymer Battery Charger
Typical Characteristics
IFASTCHARGE vs. RSET
Battery Voltage vs. Supply Voltage
4.242
1000
4.221
4.200
4.179
4.158
USBL
100
USBH
10
1
10
100
1000
4.5
4.75
5
5.25
5.5
RSET (kΩ)
Supply Voltage (V)
Recharge Voltage vs. Temperature
End of Charge Voltage vs. Temperature
4.140
4.130
4.120
4.110
4.100
4.090
4.080
4.070
4.060
4.050
4.040
4.242
4.221
4.200
4.179
4.158
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature (°C)
Temperature (°C)
Preconditioning Threshold
Voltage vs. Temperature
Preconditioning Charge Current vs. Temperature
(USBH; USBH = 8.06kΩΩ)
60
55
50
45
40
3.05
3.04
3.03
3.02
3.01
3.00
2.99
2.98
2.97
2.96
2.95
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature (°C)
Temperature (°C)
6
3688.2006.10.1.5
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
