BQ24072T_1 Datasheet, PDF (11/34 Pages) Texas Instruments – 1.5A USB-Friendly Li-Ion Battery Charger and Power-Path Management IC

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bq24072T
bq24075T, bq24079T
SLUS937A – DECEMBER 2009 – REVISED APRIL 2010
TYPICAL CHARACTERISTICS (continued)
V_IN = 6V, EN1 = 1, EN2 = 0, T_A = 25°C, unless otherwise noted.
SYSTEM ON/OFF WITH INPUT
NOT CONNECTED
V_IN = 0V
THERMAL REGULATION
600
V_SYSOFF
5 V/div
500
DROPOUT VOLTAGE
vs
TEMPERATURE
0.7
I_L = 1 A
0.6
V_BAT
4V
V_OUT
Battery Powering
System
I_BAT
System Power Off
4 ms/div
Figure 10.
2 V/div
500 mA/div
400
300
200
100
0
120 125 130 135 140 145
Temperature - ^oC
Figure 11.
0.5
0.4
0.3
0.2
0.1
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.
bq24072T
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.
bq24072T
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.
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