LP2985A-30DBVTG4 datasheet(11/25 Pages) TI

Part #	LP2985A-30DBVTG4

Description	150-mA LOW-NOISE LOW-DROPOUT REGULATOR WITH SHUTDOWN

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Manufacturer	TI [Texas Instruments]

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3.22

3.24

3.26

3.28

3.3

3.32

3.34

3.36

3.38

3.4

−250

−200

−150

−100

−50

0

50

100

150

200

20

µs/div"

VO = 3.3 V

Cbyp = 10 nF

∆IL = 100 mA

IL

VO

3.22

3.24

3.26

3.28

3.3

3.32

3.34

3.36

3.38

3.4

−250

−200

−150

−100

−50

0

50

100

150

200

VO = 3.3 V

Cbyp = 10 nF

∆IL = 150 mA

IL

VO

20

µs/div"

3.22

3.24

3.26

3.28

3.3

3.32

3.34

3.36

3.38

3.4

−250

−200

−150

−100

−50

0

50

100

150

200

IL

VO

VO = 3.3 V

Cbyp = 0 nF

∆IL = 150 mA

20

µs/div"

3.27

3.29

3.31

3.33

3.35

3.37

3.39

3.41

2

2.5

3

3.5

4

4.5

5

5.5

VI

VO

20

µs/div"

VO = 3.3 V

Cbyp = 0 nF

IO = 150 mA

LP2985

150-mA LOW-NOISE LOW-DROPOUT REGULATOR

WITH SHUTDOWN

SLVS522J – JULY 2004 – REVISED AUGUST 2006

TYPICAL PERFORMANCE CHARACTERISTICS (continued)

C

IN = 1 µF, COUT = 4.7 µF, VIN = VOUT(NOM) + 1 V, TA = 25°C, ON/OFF pin tied to VIN (unless otherwise specified)

LOAD TRANSIENT RESPONSE

Figure 17.

Figure 18.

LOAD TRANSIENT RESPONSE

LINE TRANSIENT RESPONSE

Figure 19.

Figure 20.

11

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