AQ120 Datasheet, PDF (4/7 Pages) Acutechnology Semiconductor – Battery Charger Controller SOT23-5 and SC70-5 Package

Acutechnology Semiconductor Inc.
Typical Performance Characteristics
AQ120
900
Cons tant c urrent mode
800
700
600
500
400
300
200
Cons tant v oltage mode
100
2
2.2
2.4
2.6
2.8
3
3.2
3.4
3.6
3.8
Charge c urrent v s battery v oltage
V 2/V
1 c ell Lithium Ion battery
4
4.2
200mV /div
Fig.1 Charge current vs battery voltage
4
3.5
3
2.5
2
1.5
1
900
700
500
300
100
0
Constant voltage
Constant current
1
2
3
4
Fig. 2 Battery charge vs time
www.acutechnology.com
4
Rev. 1.8 April 1, 2006