BQ24072_10 Datasheet, PDF (10/42 Pages) Texas Instruments – 1.5A USB-FRIENDLY Li-Ion BATTERY CHARGER AND POWER-PATH MANAGEMENT IC

bq24072, bq24073
bq24074, bq24075, bq24079
SLUS810E – SEPTEMBER 2008 – REVISED JULY 2010
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, bq24079
THERMAL REGULATION
600
0.7
V_SYSOFF
5 V/div
500
0.6
DROPOUT VOLTAGE
vs
TEMPERATURE
I_L = 1 A
V_BAT
400
0.5
4V
300
0.4
2 V/div
V_OUT
200
0.3
Battery Powering
100
System
System Power Off
0.2
I_BAT
500 mA/div
0
120 125 130 135 140 145
4 ms/div
Temperature - ^oC
0.1
Figure 10.
Figure 11.
0
0
25
50
75
100 125
T_J - Junction Temperature - °C
Figure 12.
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.
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.
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.
10
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