BQ24072 Datasheet, PDF (10/38 Pages) Texas Instruments – 1.2A USB-FRIENDLY Li-Ion BATTERY CHARGER AND POWER-PATH MANAGEMENT IC

bq24072, bq24073
bq24074, bq24075
SLUS810A – SEPTEMBER 2008 – REVISED DECEMBER 2008...................................................................................................................................... www.ti.com
TYPICAL CHARACTERISTICS (continued)
V_IN = 6V, EN1=1, EN2=0, bq24073 application circuit, T_A = 25°C, unless otherwise noted.
SYSTEM ON/OFF WITH INPUT NOT
CONNECTED
V_IN = 0V
bq24075
V_SYSOFF
5 V/div
V_BAT
4V
V_OUT
Battery Powering
System
I_BAT
System Power Off
4 ms/div
2 V/div
500 mA/div
Figure 10.
DROPOUT VOLTAGE
vs
TEMPERATURE
NO INPUT SUPPLY
120
I_L = 1 A
100
80
VBAT = 3 V
60
VBAT = 3.9 V
40
20
0
0
25
50
75
100 125
T_J - Junction Temperature - °C
Figure 13.
bq24073/ 74
OUTPUT REGULATION VOLTAGE
vs
TEMPERATURE
4.45
4.43
V_IN = 5 V,
I_L = 1 A
4.40
4.38
4.35
4.33
4.30
0
25
50
75
100 125
T_J - Junction Temperature - °C
Figure 16.
THERMAL REGULATION
600
500
400
300
200
100
0
120 125 130 135 140 145
Temperature - ^oC
Figure 11.
bq24072
OUTPUT REGULATION VOLTAGE
vs
BATTERY VOLTAGE
4.6
V_IN = 5 V
4.4
4.2
4
3.8
3.6
3.4
3.2
3
2
2.5
3
3.5
4
4.5
V_BAT - Battery Voltage - V
Figure 14.
bq24075
OUTPUT REGULATION VOLTAGE
vs
TEMPERATURE
5.75
5.70
5.65
V_IN = 6 V,
I_L = 1 A
5.60
5.55
5.50
5.45
5.40
5.35
5.30
5.25
0
25
50
75
100 125
T_J - Junction Temperature - °C
Figure 17.
DROPOUT VOLTAGE
vs
TEMPERATURE
0.7
I_L = 1 A
0.6
0.5
0.4
0.3
0.2
0.1
0
0
25
50
75
100 125
T_J - Junction Temperature - °C
Figure 12.
bq24072
OUTPUT REGULATION VOLTAGE
vs
TEMPERATURE
3.80
3.78
3.76
V_IN = 5 V,
V_BAT = 3.5 V,
I_L = 1 A
3.74
3.72
3.70
3.68
3.66
3.64
3.62
3.60
0
25
50
75
100 125
T_J - Junction Temperature - °C
Figure 15.
BAT REGULATION VOLTAGE
vs
TEMPERATURE
4.210
4.205
4.200
4.195
4.190
4.185
4.180
0
5 10 15 20 ^{25 30}
T_J - Junction Temperature - °C
Figure 18.
10
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