LP2985_15 Datasheet, PDF (15/29 Pages) Texas Instruments – 150-mA Low-noise Low-dropout Regulator With Shutdown

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Application Information (continued)
3.4
200
3.38
150
3.36
100
3.34
3.32
3.3
3.28
V_O = 3.3 V
C_byp = 0 nF
DI_L = 150 mA
I_L
50
0
−50
V_O
−100
3.26
−150
3.24
−200
3.22
−250
20 ms/div→
Figure 23. Load Transient Response
3.41
5.5
3.39
3.37
3.35
3.33
V_O = 3.3 V
C_byp = 10 nF
I_O = 150 mA
5
V_I
4.5
4
3.5
3.31
3
3.29
V_O
2.5
3.27
2
20 ms/div→
Figure 25. Line Transient Response
3.41
5.5
3.39
5
3.37
V_IN
4.5
3.35
4
V_O = 3.3 V
C_byp = 10 nF
3.33 IO = 1 mA
3.5
3.31
3.29
V_O
3
2.5
3.27
2
100 ms/div→
Figure 27. Line Transient Response
Copyright © 2004–2015, Texas Instruments Incorporated
LP2985
SLVS522O – JULY 2004 – REVISED JANUARY 2015
3.41
5.5
3.39
3.37
3.35
3.33
V_O = 3.3 V
C_byp = 0 nF
I_O = 150 mA
5
V_I
4.5
4
3.5
3.31
V_O
3
3.29
2.5
3.27
2
20 ms/div→
Figure 24. Line Transient Response
3.41
5.5
3.39
3.37
3.35
3.33
V_O = 3.3 V
C_byp = 0 nF
I_O = 1 mA
5
V_I
4.5
4
3.5
3.31
3
3.29
2.5
V_O
3.27
2
20 ms/div→
Figure 26. Line Transient Response
4
10
V_O
3
8
2
1
0
−1 ^{VO = 3.3 V}
C_byp = 0
I_O = 150 mA
−2
−3
6
4
V_ON/OFF
2
−4
0
100 ms/div→
Figure 28. Turn-on Time
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