AAT3681
USB Port or AC Adapter
Lithium-Ion/Polymer Battery Charger
Typical Characteristics
Constant Charging Current vs. Temperature
(RSET = 8.06kΩ)
Operating Supply Current vs. Set Resistor
210
208
205
203
200
198
195
193
190
1000
VBAT = 3.6V
VBAT = 2.85V
100
10
1
10
100
-50
-25
0
25
50
75
100
100
100
Temperature (°C)
RSET (kΩ)
Operating Current vs. Temperature
(RSET = 8.06kΩΩ)
Preconditioning Threshold Voltage
vs. Temperature
(RSET = 8.06kΩ; AAT3681 Only)
550
500
450
400
350
300
3.03
3.02
3.01
3
2.99
2.98
2.97
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
Temperature (°C)
Temperature (°C)
Preconditioning Charge Current
vs. Temperature
Preconditioning Charge Current
vs. Supply Voltage
(AAT3681 Only)
(RSET = 8.06kΩ; AAT3681 Only)
35
20.8
20.6
20.4
20.2
20.0
19.8
19.6
19.4
19.2
RSET = 5.36kΩ
30
25
20
15
10
5
RSET = 8.06kΩ
RSET = 16.2kΩ
RSET = 31.6kΩ
0
-50
-25
0
25
50
75
4
4.25 4.5
4.75
5
5.25 5.5
5.75
6
6.25 6.5
Temperature (°C)
VIN (V)
6
3681.2007.01.1.2
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
