BQ24300 Datasheet, PDF (8/22 Pages) Texas Instruments – OVERVOLTAGE AND OVERCURRENT PROTECTION IC AND Li+ CHARGER FRONT-END PROTECTION IC

bq24300
bq24304
SLUS764A – AUGUST 2007 – REVISED OCTOBER 2007
TYPICAL OPERATING PERFORMANCE (continued)
V_VBAT
t_DGL(BOVP)
V_OUT
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Figure 12. Battery OVP. V_VBAT Steps from 4.3 V to 4.5 V.
Shows t_DGL(BOVP) and Soft-Stop
UNDERVOLTAGE LOCKOUT
vs
FREE-AIR TEMPERATURE
2.75
DROPOUT VOLTAGE (IN to OUT)
vs
FREE-AIR TEMPERATURE
80
2.7
V_IN Increasing
2.65
2.6
2.55
2.5
2.45
V_IN Decreasing
70
60
bq24304, V_IN = 4 V
50
bq24300, V_IN = 5 V
40
30
2.4
20
-50 -30 -10 10
30 50
70
90 110 130
0
Temperature - °C
Figure 13.
50
100
150
Temperature - °C
Figure 14.
REGULATION VOLTAGE (OUT pin)
vs
FREE-AIR TEMPERATURE
5.53
4.53
OVP THRESHOLD
vs
FREE-AIR TEMPERATURE
10.6
5.52
4.52
bq24304
5.51
4.51
bq24300
5.5
4.5
5.49
0
4.4
20
40
60
80
100
120
Temperature - °C
Figure 15.
10.55
10.5
10.45
V_IN Increasing
10.4
10.35
V_IN Decreasing
10.3
0
20
40
60
80
100
120
Temperature - °C
Figure 16.
8
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