BQ24382 Datasheet, PDF (5/18 Pages) Texas Instruments – Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC With LDO Mode

bq24380
bq24381
bq24382
www.ti.com......................................................................................................................................................... SLUS805B – APRIL 2008 – REVISED MARCH 2009
TYPICAL CHARACTERISTICS
NORMAL POWER-ON
SHOWING SOFT-START (bq24380)
OVP at POWER-ON
R
OUT
=
6.6
W
V
IN
2 V/div
V
OUT
2 V/div
I
OUT
500 mA/div
V
IN
5 V/div
V
FAULT
2 V/div
V
OUT
500 mV/div
t - Time - 2 ms/div
Figure 1.
OVP RESPONSE for INPUT STEP (bq24380)
V_FAULT
2 V/div
V_IN
2 V/div
V_IN = 6 V to 9 V step
V_OUT
2 V/div
t - Time - 2 ms/div
Figure 2.
SLOW INPUT RAMPINTO OVP EVENT (bq24380)
V
FAULT
2 V/div
V
IN
2 V/div
V
OUT
2 V/div
t - Time - 5 ms/div
Figure 3.
RECOVERY FROM OVP (bq24380)
V_IN
5 V/div
V_IN = 10 V to 6 V step
V_OUT
2 V/div
V_FAULT
2 V/div
t - Time - 200 ms/div
Figure 4.
POWER UP INTO SHORT CIRCUIT
V
IN
5 V/div
V
FAULT
2 V/div
I
OUT
1 A/div
V
OUT
5 V/div
t - Time - 2 ms/div
Figure 5.
t - Time - 5 ms/div
Figure 6.
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