LP2985_08 Datasheet, PDF (11/25 Pages) Texas Instruments – 150-mA LOW-NOISE LOW-DROPOUT REGULATOR WITH SHUTDOWN

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LP2985
150-mA LOW-NOISE LOW-DROPOUT REGULATOR
WITH SHUTDOWN
SLVS522K – JULY 2004 – REVISED MARCH 2008
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)
LOAD TRANSIENT RESPONSE
LOAD TRANSIENT RESPONSE
3.4
200
3.4
200
3.38
150
3.38
150
3.36
100
3.36
100
3.34
3.32
3.3
3.28
3.26
3.24
3.22
3.4
3.38
3.36
3.34
3.32
3.3
3.28
3.26
3.24
3.22
I_L
V_O = 3.3 V
C_byp = 10 nF
∆I_L = 100 mA
V_O
20 µs/div"
Figure 17.
LOAD TRANSIENT RESPONSE
I_L
V_O = 3.3 V
C_byp = 0 nF
∆I_L = 150 mA
V_O
20 µs/div"
Figure 19.
50
0
−50
−100
−150
−200
−250
200
150
100
50
0
−50
−100
−150
−200
−250
3.34
3.32
3.3
3.28
3.26
3.24
3.22
3.41
3.39
3.37
3.35
3.33
3.31
3.29
3.27
I_L
V_O = 3.3 V
C_byp = 10 nF
∆I_L = 150 mA
V_O
20 µs/div"
Figure 18.
LINE TRANSIENT RESPONSE
V_I
V_O = 3.3 V
C_byp = 0 nF
I_O = 150 mA
V_O
20 µs/div"
Figure 20.
50
0
−50
−100
−150
−200
−250
5.5
5
4.5
4
3.5
3
2.5
2
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