LP3875EMP-18 Datasheet, PDF (6/25 Pages) Texas Instruments – LP3872/LP3875 1.5A Fast Ultra Low Dropout Linear Regulators

LP3872, LP3875
SNVS227F – FEBRUARY 2003 – REVISED APRIL 2013
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TYPICAL PERFORMANCE CHARACTERISTICS
Unless otherwise specified: T_J = 25°C, C_OUT = 10µF, C_IN = 10µF, S/D pin is tied to V_IN, V_OUT = 2.5V, V_IN = V_O(NOM) + 1V,
I_L = 10mA
Dropout Voltage vs Output Load Current
600
Ground Current vs Output Voltage
I_L = 1.5A
6
500
5
o
125
C
400
25^{o C}
4
300
3
200
-40^{o C}
2
100
1
0
0
0.5
1
1.5
OUTPUT LOAD CURRENT (A)
Figure 6.
0
1.8 2.3 2.8 3.3 3.8 4.3 5.0
OUTPUT VOLTAGE (V)
Figure 7.
Shutdown I_Q vs Junction Temperature
10
1
0.1
0.01
0.001
-40 -20 0 20 40 60 80 100 125
TEMPERATURE (^oC)
Figure 8.
Errorflag Threshold vs Junction Temperature
14
12
10
8
6
4
2
0
-40 -20 0 20 40 60 80 100 125
JUNCTION TEMPERATURE (^oC)
Figure 9.
DC Load Reg. vs Junction Temperature
3
DC Line Regulation vs Temperature
3
2.5
2.5
2
2
1.5
1.5
1
1
0.5
0.5
0
-40 -20 0 20 40 60 80 100 125
JUNCTION TEMPERATURE (^oC)
Figure 10.
0
-40 -20 0 20 40 60 80 100 125
JUNCTION TEMPERATURE (^oC)
Figure 11.
6
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