Datasheet

−100
100 300 500 700
Time − ms
V
I
= 16 V
V
O
= 3.3 V
C
i
= 1 µF
C
byp
= 0.01 µF
Short-Circuit Current − A
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
200
220
240
260
280
300
320
0 0.5 1 1.5 2 2.5 3 3.5
Output Voltage − V
I
SC
− mA
V
O
= 3.3 V
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
0
20 40 60 80 100 120 140
Load Current − mA
160
V
O
= 3.3 V
C
byp
= 10 nF
Ground Pin Current − µA
0
10
20
30
40
50
60
70
80
90
100
10 100 1k 10k 100k 1M
Frequency − Hz
Ripple Rejection − dB
V
I
= 5 V
V
O
= 3.3 V
C
o
= 10 µF
C
byp
= 0 nF
50 mA
150 mA
1 mA
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)
SHORT-CIRCUIT CURRENT SHORT-CIRCUIT CURRENT
vs vs
TIME OUTPUT VOLTAGE
Figure 6. Figure 7.
GROUND-PIN CURRENT RIPPLE REJECTION
vs vs
LOAD CURRENT FREQUENCY
Figure 8. Figure 9.
8 Copyright © 2004–2011, Texas Instruments Incorporated