AAT3681_08 Datasheet, PDF (5/15 Pages) Advanced Analogic Technologies – USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger

BatteryManager^TM
PRODUCT DATASHEET
AAT3681
USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger
Typical Characteristics
Constant Charging Current
vs. Set Resistor Values
1000
100
10
1
1
10
100
1000
R_SET (kΩ)
Charging Current vs. Battery Voltage
(AAT3681 Only)
350
R_SET = 5.36kΩ
300
250
R_SET = 8.06kΩ
200
150
R_SET = 16.2kΩ
100
50
R_SET = 31.6kΩ
0
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3
V_BAT (V)
Charging Current vs. Battery Voltage
(AAT3681-1 Only)
600
R_SET = 3.24K
500
400
R_SET = 5.36K
300
200 ^{RSET = 8.06K}
100 ^{RSET = 16.2K}
0 ^{RSET = 31.6K}
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3
V_BAT (V)
End of Charge Battery Voltage
vs. Input Voltage
4.220
4.215
4.210
4.205
4.200
4.195
4.190
4.185
4.180
4.5
5.0
5.5
6.0
6.5
7.0
7.5
Input Voltage (V)
End of Charge Voltage Regulation
vs. Temperature
(R_SET = 8.06kΩ)
4.23
4.22
4.21
4.20
4.19
4.18
4.17
-50
-25
0
25
50
Temperature (°C)
75
100
Constant Charging Current vs. Input Voltage
(R_SET = 8.06kΩ)
280
260
240
220 _{VBAT = 3.3V}
200
180
160
V_BAT = 3.6V
140
V_BAT = 4.0V
120
4
4.5
5
5.5
6
6.5
7
7.5
Input Voltage (V)
3681.2007.12.1.5
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