LP2985_10 Datasheet, PDF (8/27 Pages) Texas Instruments – 150-mA LOW-NOISE LOW-DROPOUT REGULATOR WITH SHUTDOWN

LP2985
SLVS522M – JULY 2004 – REVISED MARCH 2009 .......................................................................................................................................................... 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)
0.5
0.45
0.4
SHORT-CIRCUIT CURRENT
vs
TIME
V_I = 16 V
V_O = 3.3 V
C_i = 1 µF
C_byp = 0.01 µF
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
−100
100
300
500
700
Time − ms
Figure 5.
1200
1100
1000
GROUND-PIN CURRENT
vs
LOAD CURRENT
V_O = 3.3 V
C_byp = 10 nF
900
800
700
600
500
400
300
200
100
0
0 20 40 60 80 100 120 140 160
Load Current − mA
Figure 7.
SHORT-CIRCUIT CURRENT
vs
OUTPUT VOLTAGE
320
V_O = 3.3 V
300
280
260
240
220
200
0
0.5
1
1.5
2
2.5
3 3.5
Output Voltage − V
Figure 6.
RIPPLE REJECTION
vs
FREQUENCY
100
90
V_I = 5 V
V_O = 3.3 V
80
C_o = 10 µF
C_byp = 0 nF
70
1 mA
60
50 mA
50
40
150 mA
30
20
10
0
10
100
1k
10k
100k
1M
Frequency − Hz
Figure 8.
8
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