TPS71319DRCR datasheet(8/20 Pages) TI1

Part #	TPS71319DRCR

Description	Dual 250 mA Output, UltraLow Noise, High PSRR, Low-Dropout Linear Regulator with Integrated SVS

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350

300

250

200

150

100

50

0

100

1k

10k

100k

Frequency (Hz)

I

OUT = 250 mA

C

NR = 0.01 µF

V

OUT = 2.8 V (adj)

I

OUT = 1 mA

180

160

140

120

100

80

60

40

20

0

100

1k

10k

100k

Frequency (Hz)

0.001

µF

0.047

µF

0.01

µF

0.1

µF

C

OUT = 10 µF

I

OUT = 250 mA

V

OUT = 2.8 V (adj)

80

70

60

50

40

30

20

10

0

10

100

1k

10k

100k

1M

10M

Frequency (Hz)

V

OUT = 2.8 V (adj)

C

OUT = 2.2 µF

C

NR = 0.01 µF

I

OUT = 1 mA

I

OUT = 250 mA

80

70

60

50

40

30

20

10

0

10

100

1k

10k

100k

1M

10M

Frequency (Hz)

V

OUT = 2.8 V (adj)

C

OUT = 10 µF

C

NR = 0.01 µF

I

OUT = 1 mA

I

OUT = 250 mA

80

70

60

50

40

30

20

10

0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

V

IN − VOUT (V)

f = 1 kHz

f = 10 kHz

f = 100 kHz

V

OUT = 2.8 V (adj)

I

OUT = 250 mA

C

OUT = 10 µF

C

NR = 0.01 µF

TPS71319

TPS71334

SBVS055A – DECEMBER 2004 – REVISED JANUARY 2005

TYPICAL CHARACTERISTICS (continued)

For all voltage versions at T

J = 25°C, VIN = VOUT(nom) + 1 V, IOUT = 1 mA,VEN = 1.2 V, COUT = 2.2 µF, and CNR = 0.01 µF,

unless otherwise noted.

NOISE SPECTRAL DENSITY

COUT = 10 µF

NOISE SPECTRAL DENSITY vs CNR

Figure 19.

Figure 20.

PSRR (RIPPLE REJECTION) vs FREQUENCY

Figure 21.

Figure 22.

PSRR (RIPPLE REJECTION) vs VIN - VOUT

Figure 23.

8

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