BQ24313 Datasheet, PDF (8/22 Pages) Texas Instruments – OVERVOLTAGE AND OVERCURRENT PROTECTION IC AND Li+ CHARGER FRONT-END PROTECTION IC

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SLUS817A – MARCH 2008 – REVISED NOVEMBER 2008............................................................................................................................................... www.ti.com
TYPICAL OPERATING PERFORMANCE (continued)
OCP, ZOOM-IN ON THE FIRST CYCLE OF FIGURE 7
R_OUT SWITCHES FROM 6.6Ω TO 3.3Ω,SHOWS CURRENT
LIMITING AND SOFT-STOP
2 V/div
V_IN
500 mA/div
I_IN
1 V/div
V_OUT
t - Time - 2 ms/div
Figure 8.
BAT-OVP, V_(VBAT) STEPS FROM 4 V TO 4.5 V,SHOWS
t_DGL(BAT-OVP) AND SOFT STOP
2 V/div
V_OUT
V_OUT
2 V/div
I_IN
500 mA/div
V_FAULT
1 V/div
t - Time - 40 ms/div
Figure 9.
BAT-OVP, V_(VBAT) CYCLES BETWEEN 4 V AND 4.5
V,SHOWS BAT-OVP COUNTER
2 V/div
V_OUT
1 V/div
V_BAT
2 V/div
V_BAT
1 V/div
V_FAULT
t - Time - 100 ms/div
Figure 10.
INPUT VOLTAGE RAMP-UP / RAMP-DOWN
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2 V/div
VIN
2 V/div
VOUT
t - Time - 40 ms/div
Figure 12.
200 mA/div
V_FAULT
t - Time - 4 ms/div
Figure 11.
UNDERVOLTAGE LOCKOUT
vs
FREE-AIR TEMPERATURE
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
Figure 13.
90 110 130
8
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