LP2985 datasheet(10/27 Pages) TI

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0.01

0.1

100

10k

100k

Frequency − Hz

Cbyp = 1 nF

Cbyp = 10 nF

Cbyp = 100 pF

ILOAD = 150 mA

0.001

0.01

0.1

100

10k

100k

Frequency − Hz

Ci = 1 µF

Co = 4.7 µF

VO = 3.3 V

10 mA

100 mA

1 mA

0.01

0.1

100

10k

100k

Frequency − Hz

ILOAD = 1 mA

Cbyp = 1 nF

Cbyp = 10 nF

Cbyp = 100 pF

0.2

0.4

0.6

0.8

1.2

1.4

1.6

1.8

Input Voltage − V

RL = Open

RL = 3.3 kΩ

VO = 3.3 V

Cbyp = 10 nF

LP2985

SLVS522M – JULY 2004 – REVISED MARCH 2009 .......................................................................................................................................................... www.ti.com

TYPICAL PERFORMANCE CHARACTERISTICS (continued)

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

OUTPUT IMPEDANCE

OUTPUT NOISE DENSITY

FREQUENCY

Figure 13.

Figure 14.

OUTPUT NOISE DENSITY

INPUT CURRENT

FREQUENCY

INPUT VOLTAGE

Figure 15.

Figure 16.

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