MC34673 Datasheet, PDF (9/22 Pages) Freescale Semiconductor, Inc – High Input Voltage 1.2A Charger for Single-cell Li-Ion Batteries

ELECTRICAL CHARACTERISTICS
ELECTRICAL PERFORMANCE CURVES
1.2
R =13.3 kΩ
ISET
1.0
0.8
0.6
R =6.57 kΩ
ISET
R =3.23 kΩ
ISET
0.4
0.2
0.0
0 200 400 600 800 1000 1200
Charge Current (mA)
Figure 10. V_ISET vs Charge Current
V_IN = 5.0V, T_A = 25°C
1500
1200
R =3.23 kΩ
ISET
900
600
300
R =6.57 kΩ
ISET
R =13.3 kΩ
ISET
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
V_BAT (V)
Figure 11. Charge Current vs V_BAT
V_IN = 5.0V, T_A = 25°C
4.30
4.25
4.20
4.15
4.10
4.05
4.00
-40 -20 0 20 40 60 80
Temperature ( ^oC)
Figure 12. V_BAT vs Temperature
V_IN = 5.0V, I_BAT = 0mA
1200
1000
R =3.95 kΩ
ISET
800
600
R =6.11 kΩ
ISET
400
200
R =19.36 kΩ
ISET
0
-40 -20 0 20 40 60 80
Temperature ( ^oC)
Figure 13. Constant Charge Current vs Temperature
V_IN = 5.0V, V_BAT = 3.9V
250
200
R =3.95 kΩ
ISET
150
100
R =6.11 kΩ
ISET
50
R =19.36 kΩ
ISET
0
-40 -20 0 20 40 60 80
Temperature ( ^oC)
Figure 14. Trickle Charge Current vs Temperature
V_IN = 5.0V, V_BAT = 2.0V
1.2
1.0
0.8
0.6
0.4
0.2
0.0
-40 -20 0 20 40 60 80
Temperature ( ^oC)
Figure 15. V_ISET vs Temperature
V_IN = 5.0V
Analog Integrated Circuit Device Data
Freescale Semiconductor
34673
9