LP3875EMP-18 Datasheet, PDF (7/25 Pages) Texas Instruments – LP3872/LP3875 1.5A Fast Ultra Low Dropout Linear Regulators

LP3872, LP3875
www.ti.com
SNVS227F – FEBRUARY 2003 – 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
3.000
Noise vs Frequency
Load Transient Response
C_IN = C_OUT = 10µF, OSCON
2.500
2.000
IL = 100mA
CIN = COUT = 10PF
VOUT
100mV/DIV
1.500
1.000
0.500
ILOAD
1A/DIV
0.000
100
1k
10k
100k
FREQUENCY (Hz)
Figure 12.
TIME (50Ps/DIV)
Figure 13.
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 14.
Load Transient Response
C_IN =C_OUT = 10µF, TANTALUM
VOUT
100mV/DIV
ILOAD
1A/DIV
TIME (50Ps/DIV)
Figure 15.
Load Transient Response
C_IN =C_OUT = 100µF, TANTALUM
VOUT
100mV/DIV
ILOAD
1A/DIV
TIME (50Ps/DIV)
Figure 16.
ILOAD
1A/DIV
TIME (50Ps/DIV)
Figure 17.
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