BQ24721 Datasheet, PDF (11/48 Pages) Texas Instruments – ADVANCED MULTI-CHEMISTRY AND MULTI-CELL SYNCHRONOUS SWITCH-MODE CHARGER AND SYSTEM POWER SELECTOR

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TYPICAL CHARACTERISTICS (continued)
bq24721
SLUS683 – NOVEMBER 2005
ACDET THRESHOLD
vs
JUNCTION TEMPERATURE
1.2012
V_I = 20 V
1.201
1.2008
1.2006
1.2004
1.2002
1.2
1.1998
1.1996
0
20 40 60 80 100 110 120 125
T_J − Junction Temperature − ^oC
Figure 10.
HIDRV, r_DS(on), PULL DOWN
vs
JUNCTION TEMPERATURE
1.9
V_I = 20 V
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1
0 20 40 60 80 100 110 120 125
T_J − Junction Temperature − ^oC
Figure 13.
BATTERY VOLTAGE REGULATION
ACCURACY
vs
BATTERY VOLATGE
0.1
0.08 ^{VI = 24 V}
0.06
0.04
T_J = 85^oC
0.02
0
-0.02
-0.04
-0.06
-0.08
-0.1
9
T_J = 25^oC
T_J = 125^oC
T_J = 0^oC
11
13
15
17
19
V_(BAT) − Battery Voltage − V
Figure 16.
ACDET HYSTERESIS
vs
JUNCTION TEMPERATURE
19.25
19.2
19.15
19.1
V_I = 20 V
19.05
19
18.95
18.9
18.85
18.8
18.75
0
20 40 60 80 100 110 120 125
T_J − Junction Temperature − ^oC
Figure 11.
LODRV, r_DS(on), PULL UP
vs
JUNCTION TEMPERATURE
2.7
V_I = 20 V
2.5
2.3
2.1
1.9
1.7
1.5
0
20 40 60 80 100 110 120 125
T_J − Junction Temperature − ^oC
Figure 14.
BATTERY VOLTAGE REGULATION
vs
JUNCTION TEMPERATURE
0.1
0.08
0.06
0.04
0.02
0
-0.02
-0.04
-0.06
-0.08
-0.1
0
V_I = 12.6 V
V_I = 16.8 V
20 40 60 80 100 110 120 125
T_J − Junction Temperature − ^oC
Figure 17.
HIDRV, r_DS(on), PULL UP
vs
JUNCTION TEMPERATURE
2.7
V_I = 20 V
2.5
2.3
2.1
1.9
1.7
1.5
0
20 40 60 80 100 110 120 125
T_J − Junction Temperature − ^oC
Figure 12.
LODRV, r_DS(on), PULL DOWN
vs
JUNCTION TEMPERATURE
1.9
V_I = 20 V
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1
0 20 40 60 80 100 110 120 125
T_J − Junction Temperature − ^oC
Figure 15.
CHARGE CURRENT REGULATION
ACCURACY
vs
SRP-SRN VOLTAGE
15
V_I = 20 V
13
11
T_J = 125^oC
9
7
T_J = 85^oC
5
3
T_J = 25^oC
T_J = 0^oC
1
-1
5
15
25 35 45 55 65
V_I − SPR-SRN Voltage − mV
Figure 18.
11