LP2985_10 Datasheet, PDF (9/27 Pages) Texas Instruments – 150-mA LOW-NOISE LOW-DROPOUT REGULATOR WITH SHUTDOWN

LP2985
www.ti.com .......................................................................................................................................................... SLVS522M – JULY 2004 – REVISED MARCH 2009
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
C_IN = 1 µF, C_OUT = 4.7 µF, V_IN = V_OUT(NOM) + 1 V, T_A = 25°C, ON/OFF pin tied to V_IN (unless otherwise specified)
RIPPLE REJECTION
vs
FREQUENCY
100
V_I = 3.7 V
90 _{VO = 3.3 V}
80
C_o = 10 µF
C_byp = 0 nF
70
1 mA
60
50 ^{50 mA}
RIPPLE REJECTION
vs
FREQUENCY
100
V_I = 5 V
90 _{VO = 3.3 V}
80
C_o = 4.7 µF
C_byp = 10 nF
70
60 ^{1 mA}
50
40
30
150 mA
20
10
40 _{50 mA}
30
20
150 mA
10
0
10
100
1k
10k
100k
1M
Frequency − Hz
Figure 9.
0
10
100
1k
10k
100k
1M
Frequency − Hz
Figure 10.
RIPPLE REJECTION
vs
FREQUENCY
100
90
V_I = 5 V
V_O = 3.3 V
80
C_o = 4.7 µF
C_byp = 10 nF
70
1 mA
60
10 mA
50
OUTPUT IMPEDANCE
vs
FREQUENCY
10
C_i = 1 µF
C_o = 10 µF
V_O = 3.3 V
1
1 mA
10 mA
100 mA
0.1
40 _{100 mA}
30
0.01
20
10
0
0.001
10
100
1k
10k
100k
1M
10
100
1k
10k
100k
1M
Frequency − Hz
Frequency − Hz
Figure 11.
Figure 12.
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