BQ24721 Datasheet, PDF (10/48 Pages) Texas Instruments – ADVANCED MULTI-CHEMISTRY AND MULTI-CELL SYNCHRONOUS SWITCH-MODE CHARGER AND SYSTEM POWER SELECTOR

bq24721
SLUS683 – NOVEMBER 2005
www.ti.com
TYPICAL CHARACTERISTICS
VREF5 LOAD REGULATION
vs
LOAD CURRENT
5
4.99
V_I = 20 V
4.98
4.97
T_J = 0^oC
T_J = 25^oC
4.96
4.95
T_J = 85^oC
4.94
4.93
T_J = 125^oC
4.92
0
5 10 15 20 25 30 35 40 45 50
I_L − Load Current − mA
Figure 1.
REGN LOAD REGULATION
vs
LOAD CURRENT
5.95
V_I = 20 V
5.9
5.85
T_J = 0^oC
T_J = 25^oC
5.8
T_J = 85^oC
5.75
T_J = 125^oC
5.7
0
5 10 15 20 25 30 35 40 45 50
I_L − Load Current − mA
Figure 4.
REGN CURRENT LIMIT
vs
FORCED REGN VOLTAGE
160
V_CC = 24 V
140
120
100
80
60
40
20
0
0
1
2
3
45 6
V_I − Forced REGN Voltage − V
Figure 7.
VREF5 LINE REGULATION
vs
INPUT VOLTAGE
4.988
V_I = 20 V
4.986
4.984
T_J = 0^oC
T_J = 25^oC
4.982 T_J = 85^oC
4.98
4.978
4.976
T_J = 125^oC
4.974
7
9 11 13 15 17 19 21 23 24
V_I − Input Voltage − V
Figure 2.
REGN LINE REGULATION
vs
INPUT VOLTAGE
5.92
V_I = 20 V
5.91
T_J = 0^oC
5.9
5.89
T_J = 25^oC
T_J = 85^oC
5.88
T_J = 125^oC
5.87
7
9 11 13 15 17 19 21 23 24
V_I − Input Voltage − V
Figure 5.
QUIESCENT CURRENT, NO
ADAPTER
vs
JUNCTION TEMPERATURE
280
270
260
250
V_I = 16.8 V
240
V_I = 12.6 V
230
220
210
200
0
20 40 60 80 100 110 120 125
T_J − Junction Temperature − ^oC
Figure 8.
VREF5 CURRENT LIMIT
vs
JUNCTION TEMPERATURE
114
V_I = 20 V
113
112
111
110
109
108
0
20 40 60 80 100 110 120 125
T_J − Junction Temperature − ^oC
Figure 3.
REGN CURRENT LIMIT
vs
JUNCTION TEMPERATURE
116
V_I = 20 V
115.5
115
114.5
114
113.5
113
0
20 40 60 80 100 110 120 125
T_J − Junction Temperature − ^oC
Figure 6.
QUIESCENT CURRENT, WITH
ADAPTER
vs
JUNCTION TEMPERATURE
5.8
5.6
5.4
V_I = 16.8 V
5.2
5
V_I = 12.6 V
4.8
4.6
4.4
4.2
4
-15 5 25 45 65 85 105 125
T_J − Junction Temperature − ^oC
Figure 9.
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