BQ24314C Datasheet, PDF (6/26 Pages) Texas Instruments – Li+ Charger Front-End Protection IC

bq24314C
SLUSAV3A – AUGUST 2012 – REVISED JULY 2015
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6.6 Typical Characteristics
Test conditions (unless otherwise noted) for typical operating performance: V_IN = 5 V, C_IN = 1 μF, C_OUT = 1 μF, R_ILIM =
24.9 kΩ, R_BAT = 100 kΩ, T_A = 25°C, V_PU = 3.3 V (see Figure 12 for the Typical Application Circuit)
2.75
2.7
2.65
V_IN Increasing
2.6
2.55
2.5
2.45
V_IN Decreasing
2.4
-50 -30 -10 10 30 50 70
Temperature - °C
90 110 130
280
260
240
220
200
180
160
140
120
100
0
V_IN = 4 V
V_IN = 5 V
50
100
150
Temperature - °C
Figure 1. Undervoltage Lockout vs Free-Air Temperature
5.88
5.86
5.84
5.82
V_IN Increasing
5.8
V_IN Decreasing
5.78
-50
-30 -10
10 30 50 70
Temperature - °C
90 110 130
Figure 2. Dropout Voltage (IN to OUT) vs Free-Air
Temperature
1600
1400
1200
1000
800
600
400
200
0
0
10 20 30 40 50 60 70 80 90 100
R_ILIM - kW
Figure 3. Overvoltage Threshold Protection vs Free-Air
Temperature
985
984
983
982
981
980
979
978
977
976
975
-50 -30 -10
10 30 50 70
Temperature - °C
90 110 130
Figure 4. Input Overcurrent Protection vs ILIM Resistance
4.5
4.45
4.4
BV_OVP (V_BAT Increasing)
4.35
4.3
4.25
4.2
BV_OVP Recovery (V_BAT Decreasing)
4.15
-50 -30 -10 10
30 50
70
Temperature - °C
90 110 130
Figure 5. Input Overcurrent Protection vs Free-Air
Temperature
Figure 6. Battery Overvoltage Protection vs Free-Air
Temperature
6
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