TPS74401 Datasheet, PDF (9/22 Pages) Texas Instruments – 3.0A Ultra-Low Dropout Linear Regulator

TPS74401
www.ti.com
SBVS066D – DECEMBER 2005 – REVISED AUGUST 2006
TYPICAL CHARACTERISTICS (continued)
At T_J = +25°C, V_OUT = 1.5V, V_IN = V_OUT(TYP) + 0.3V, V_BIAS = 3.3V, I_OUT = 50mA, C_IN = 1µF, C_BIAS = 1µF, C_SS = 0.01µF, and C_OUT = 10µF,
unless otherwise noted.
2.85
2.65
2.45
2.25
2.05
1.85
1.65
1.45
1.25
0
I_BIAS vs I_OUT AND TEMPERATURE
+125°C
+25°C
-40°C
500 1000 1500 2000 2500 3000
I_OUT (mA)
Figure 21.
I_BIAS SHUTDOWN vs TEMPERATURE
0.45
0.40
0.35
V_BIAS = 2.375V
0.30
0.25
V_BIAS = 5.5V
0.20
0.15
0.10
0.05
0
-40 -20 0
20 40 60 80 100 120
Figure 23.
LOW-LEVEL PG VOLTAGE vs PG CURRENT
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
2
4
6
8
10
12
PG Current (mA)
Figure 25.
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
2.0
I_BIAS vs V_BIAS AND V_OUT
T_J = +125°C
T_J = +25°C
T_J = -40°C
2.5
3.0
3.5
4.0
4.5
5.0
V_BIAS (V)
Figure 22.
SOFT-START CHARGING CURRENT (I_SS)
vs TEMPERATURE
765
750
735
720
705
690
675
-40 -20 0
20 40 60
Figure 24.
80 100 120
OUTPUT SHORT-CIRCUIT RECOVERY
V_OUT = 0.8V
I_OUT
1A/div
Output Shorted
V_OUT
50mV/div
Time (20ms/div)
Output Open
Figure 26.
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