BQ24075T Datasheet, PDF (11/29 Pages) Texas Instruments – 1.5A USB-Friendly Li-Ion Battery Charger and Power-Path Management IC

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bq24075T
bq24079T
SLUS937 – DECEMBER 2009
TYPICAL CHARACTERISTICS (continued)
V_IN = 6V, EN1 = 1, EN2 = 0, T_A = 25°C, unless otherwise noted.
OVERVOLTAGE PROTECTION
THRESHOLD
vs
TEMPERATURE
INPUT CURRENT LIMIT
vs
INPUT VOLTAGE
6.70
800
6.6 V
700
6.65
V_I Rising
600
500
6.60
RILIM
USB500
400
6.55
300
FASTCHARGE CURRENT
vs
BATTERY VOLTAGE
1.05
R_ISET = 900 W
1.03
1.01
0.99
6.50
V_I Falling
200
100
USB100
0.97
6.45
0
25
50
75
100 125
T_J - Junction Temperature - °C
Figure 16.
0
5
6
7
8
9
10
V_I - Input Voltage - V
Figure 17.
0.95
3
3.2 3.4 ^3.6 3.8
4 4.2
V_BAT - Battery Voltage - V
Figure 18.
FASTCHARGE CURRENT
vs
BATTERY VOLTAGE
310
R_ISET = 3 kW
305
300
295
290
285
280
3 3.2 3.4 3.6 3.8 4 4.2
V_BAT - Battery Voltage - V
Figure 19.
FASTCHARGE CURRENT
vs
BATTERY VOLTAGE
105
104
R_ISET = 900 W
103
102
101
100
99
98
97
96
95
2
2.2
2.4
2.6
2.8
3
V_BAT - Battery Voltage - V
Figure 20.
PRECHARGE CURRENT
vs
BATTERY VOLTAGE
31.5
31
R_ISET = 3 kW
30.5
30
29.5
29
28.5
2
2.2
2.4
2.6
2.8
3
V_BAT - Battery Voltage - V
Figure 21.
Copyright © 2009, Texas Instruments Incorporated
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