LP2985_15 Datasheet, PDF (16/29 Pages) Texas Instruments – 150-mA Low-noise Low-dropout Regulator With Shutdown

LP2985
SLVS522O – JULY 2004 – REVISED JANUARY 2015
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Application Information (continued)
4
10
V_O
3
8
2
1
0
V_O = 3.3 V
−1 _{Cbyp = 100 pF}
I_LOAD = 150 mA
−2
−3
6
4
V_ON/OFF
2
−4
0
200 ms/div→
Figure 29. Turn-on Time
4
3
2
4
10
V_O
3
8
2
1
0
−1
V_O = 3.3 V
C_byp = 1 nF
I_LOAD = 150 mA
−2
−3
6
4
V_ON/OFF
2
−4
0
2 ms/div→
Figure 30. Turn-on Time
Input
10
8
1
6
0
−1
V_O = 3.3 V
C_byp = 10 nF
I_LOAD = 150 mA
−2
−3
4
Output
2
−4
0
20 ms/div→
Figure 31. Turn-on Time
9 Power Supply Recommendations
A power supply may be used at the input voltage within the ranges given in the Recommended Operating
Conditions table. It is recommended to use bypass capacitors as described in Layout Guidelines.
16
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