TIME (20 ms/DIV)

CDELAY = 0.1 PF

CBYP = 0

ILOAD = 250 mA

VOUT 2V/DIV

VIN 2V/DIV

CDELAY 2V/DIV

ERROR 2V/DIV

TIME (50 Ps/DIV)

CDELAY = 0.1 PF

CBYP = 0

ILOAD = 250 mA

VOUT 2V/DIV

VIN 2V/DIV

CDELAY 2V/DIV

ERROR 2V/DIV

100

1M

FREQUENCY (kHz)

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

1k

10k

100k

IOUT = 150 mA

CBYP = 0.1 PF

IOUT = 1 mA

1

10

100

FREQUENCY (kHz)

0.01

0.1

1

10

0.1

CBYP = 0

CBYP = 0.1 PF

LP3997

SNVS272B – MAY 2004 – REVISED MAY 2013

www.ti.com

Typical Performance Characteristics. (continued)

Unless otherwise noted, SD = 950mV, VIN = VOUT + 1.0V, CIN = 2.2 µF, IOUT = 1 mA, COUT = 2.2 µF and CBYP = 0.1 µF.

Typical values and limits appearing in normal type apply for TJ = 27°C. Limits appearing in boldface type apply over the full

temperature range for operation,

−40 to +125°C.

Power Supply Rejection Ratio

Noise Spectrum

Turn-On Sequence

Turn-Off Sequence

8

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