Datasheet

0.01
0.1
1
10
100 1k 10k 100k
Frequency − Hz
Noise Density − µV/
C
byp
= 1 nF
C
byp
= 10 nF
C
byp
= 100 pF
I
LOAD
= 150 mA
Hz
0.001
0.01
0.1
1
10
10 100 1k 10k 100k
1M
Frequency − Hz
C
i
= 1 µF
C
o
= 4.7 µF
V
O
= 3.3 V
10 mA
100 mA
1 mA
Output Impedance − Ω
0.01
0.1
1
10
100 1k 10k 100k
Frequency − Hz
Noise Density − µV/
I
LOAD
= 1 mA
C
byp
= 1 nF
C
byp
= 10 nF
C
byp
= 100 pF
Hz
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
0 1 2 3 4 5 6
Input Voltage − V
Input Current − mA
R
L
= Open
R
L
= 3.3 kΩ
V
O
= 3.3 V
C
byp
= 10 nF
LP2985
SLVS522N –JULY 2004–REVISED JUNE 2011 www.ti.com
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)
OUTPUT IMPEDANCE OUTPUT NOISE DENSITY
vs vs
FREQUENCY FREQUENCY
Figure 14. Figure 15.
OUTPUT NOISE DENSITY INPUT CURRENT
vs vs
FREQUENCY INPUT VOLTAGE
Figure 16. Figure 17.
10 Copyright © 2004–2011, Texas Instruments Incorporated