LP3873_15 Datasheet, PDF (7/24 Pages) Texas Instruments – 3A Fast Ultra Low Dropout Linear Regulators

LP3873, LP3876
www.ti.com
SNVS220E – NOVEMBER 2002 – REVISED APRIL 2013
Typical Performance Characteristics (continued)
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
DC Line Regulation
vs
Temperature
3
V_IN
vs
V_OUT Over Temperature
3.0
2.5
2.5
2
2.0
1.5
1
0.5
0
-40 -20 0 20 40 60 80 100 125
JUNCTION TEMPERATURE (^oC)
Figure 9.
1.5
-40^oC
1.0
25^oC
0.5
125^oC
0.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VIN (V)
Figure 10.
3.000
2.500
2.000
Noise
vs
Frequency
IL = 100mA
CIN = COUT = 10PF
Load Transient Response
C_IN = C_OUT = 10µF, OSCON
VOUT
100mV/DIV
1.500
1.000
0.500
ILOAD
1A/DIV
0.000
100
1k
10k
100k
FREQUENCY (Hz)
Figure 11.
TIME (50Ps/DIV)
Figure 12.
Load Transient Response
C_IN = C_OUT = 100µF, OSCON
Load Transient Response
C_IN = C_OUT = 100µF, POSCAP
VOUT
100mV/DIV
VOUT
100mV/DIV
ILOAD
1A/DIV
TIME (50Ps/DIV)
Figure 13.
ILOAD
1A/DIV
TIME (50Ps/DIV)
Figure 14.
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