BQ24382 Datasheet, PDF (6/18 Pages) Texas Instruments – Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC With LDO Mode

bq24380
bq24381
bq24382
SLUS805B – APRIL 2008 – REVISED MARCH 2009......................................................................................................................................................... www.ti.com
TYPICAL CHARACTERISTICS (continued)
SOFT-STOP DURING OCP EVENT (bq24380)
BATTERY OVP EVENT (bq24380)
V
IN
5 V/div
V
OUT
500 mV/div
V_BAT
1 V/div
V_OUT
2 V/div
I
OUT
1 A/div
VBAT = 3.8 V to 4.5 V step
V_FAULT
2 V/div
t - Time - 20 ms/div
Figure 7.
UVLO
vs
FREE-AIR TEMPERATURE
2.75
2.70
2.65
V_IN Rising
2.60
2.55
t - Time - 50 ms/div
Figure 8.
DROPOUT VOLTAGE
vs
FREE-AIR TEMPERATURE
250
I_OUT = 1 A
210
V_IN = 4 V
170
V_IN = 5 V
130
2.50
V_IN Falling
90
2.45
2.40
-40
-15
10
35
60
85
110
135
T_A - Free-Air Temperature - °C
Figure 9.
OUTPUT VOLTAGE REGULATION, V_O(REG)
vs
FREE-AIR TEMPERATURE
5.60
5.50
bq24380
5.40
5.30
50
-40
-15
10
35
60
85
T_A - Free-Air Temperature - °C
Figure 10.
110 135
OVP THRESHOLD
vs
FREE-AIR TEMPERATURE
7.4
bq24381
7.2
V_IN Rising
7.0
V_IN Falling
6.8
5.20
5.10
bq24381
5.00
4.90
–40
–15
10
35
60
85
110
135
T_A – Free-Air Temperature – °C
Figure 11.
6.6
6.4
V_IN Rising
6.2
bq24380
V_IN Falling
6.0
–40
–15
10
35
60
85
T_A – Free-Air Temperature – °C
Figure 12.
110
135
6
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