AAT2556 Datasheet, PDF (9/27 Pages) Advanced Analogic Technologies – Battery Charger and Step-Down Converter for Portable Applications

DATA SHEET
AAT2556
Battery Charger and Step-Down Converter for Portable Applications
Typical Characteristics – Battery Charger
Constant Charging Current
vs. Set Resistor Values
1000
100
10
1
1
10
100
1000
R_SET (kΩ)
Charging Current vs. Battery Voltage
(V_ADP = 5V)
600
R_SET = 3.24kΩ
500
400
R_SET = 5.36kΩ
300
200
R_SET = 8.06kΩ
100
R_SET = 16.2kΩ
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)
End of Charge Battery Voltage
vs. Supply Voltage
4.206
4.204
4.202
R_SET = 8.06kΩ
4.200
4.198
R_SET = 31.6kΩ
4.196
4.194
4.5 4.75 5
5.25 5.5 5.75 6
V_ADP (V)
6.25 6.5
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.
Supply Voltage
(R_SET = 8.06kΩ)
220
210
V_BAT = 3.3V
200
190
V_BAT = 3.6V
180
V_BAT = 4V
170
4
4.25 4.5 4.75 5 5.25 5.5 5.75 6
V_ADP (V)
6.25 6.5
Constant Charging Current vs. Temperature
(R_SET = 8.06kΩ)
210
208
205
203
200
198
195
193
190
-50
-25
0
25
50
75
100
Temperature (°C)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
202177B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013
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