1

100

10k

1M

FREQUENCY (MHz)

0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

VOUT = 1.2V

IL = 1A

COUT = 100 PF Tant.

0

5 Ps/DIV

1

2

3

VIN

VOUT

VOUT = 1.2V

IL = 3A

0

1

1.5

1000

10000

100000

1000000

FREQUENCY (Hz)

0

10

20

30

40

50

60

70

80

90

100

100

CBIAS = 1 PF Tantalum

IL = 0

VOUT = 1.2V

1000

10000

100000

1000000

FREQUENCY (Hz)

0

10

20

30

40

50

60

70

80

COUT = 4.7 PF Tantalum

CBIAS = 1 PF Tantalum

IL = 10 mA

LP38843

SNVS290C – DECEMBER 2004 – REVISED APRIL 2013

www.ti.com

TYPICAL PERFORMANCE CHARACTERISTICS (continued)

Unless otherwise specified: TJ = 25°C, CIN = 10 µF CER, COUT = 22 µF CER, CBIAS = 1 µF CER, S/D Pin is tied to VBIAS, VOUT

= 1.2V, IL = 10mA, VBIAS = 5V, VIN = VOUT + 1V.

VBIAS PSRR

VIN PSRR

Figure 9.

Figure 10.

Output Noise Voltage

VOUT Start Up

Figure 11.

Figure 12.

6

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