AAT3681A Ver la hoja de datos (PDF) - Analog Technology Inc
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AAT3681A Datasheet PDF : 17 Pages
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AAT3681A
500mA 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
RSET (kΩ)
Charging Current vs. Battery Voltage
(AAT3681A, AAT3681A-2 and AAT3681A-3 only)
600
RSET = 3.24kΩ
500
400
RSET = 5.36kΩ
300
200
RSET = 8.06kΩ
RSET = 16.2kΩ
100
0
RSET = 31.6kΩ
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3
VBAT (V)
Charging Current vs. Battery Voltage
(AAT3681A-1 only)
600
500 RSET = 3.24kΩ
400
RSET = 5.36kΩ
300
200 RSET = 8.06kΩ
RSET = 16.2kΩ
100
0
RSET = 31.6kΩ
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3
VBAT (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
(RSET = 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
(RSET = 8.06kΩ)
280
260
240
220 VBAT = 3.3V
200
180
160
VBAT = 3.6V
140
VBAT = 4.0V
120
4
4.5
5
5.5
6
6.5
7
7.5
Input Voltage (V)
3681A.2007.10.1.2
5
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