TPS74401KTWRG3 datasheet(10/29 Pages) TI

No. de pieza	TPS74401KTWRG3

Descripción Electrónicos	3.0A Ultra-LDO with Programmable Soft-Start

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Fabricante Electrónico	TI [Texas Instruments]

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-40

-20

0

20

40

60

80

100

120

V

=2.375V

BIAS

V

=5.5V

BIAS

0.45

0.40

0.35

0.30

0.25

0.20

0.15

0.10

0.05

0

JunctionTemperature( C)

°

3.0

2.8

2.6

2.4

2.2

2.0

1.8

1.6

1.4

1.2

1.0

2.0

2.5

3.0

3.5

4.0

4.5

V

(V)

BIAS

5.0

T =

J

+125 C

°

T =+25 C

°

J

T =

J

-

°

40 C

2.85

2.65

2.45

2.25

2.05

1.85

1.65

1.45

1.25

0

500

1000

1500

2000

2500

I

(mA)

OUT

3000

+125 C

°

+25 C

°

-

°

40 C

1

0.1

0.01

100

1k

10k

Frequency(Hz)

100k

C

=1nF

SS

C

=0nF

SS

C

=10nF

SS

I

=3A

OUT

V

=1.1V

OUT

1

0.1

0.01

100

1k

10k

Frequency(Hz)

100k

V

=3.3V

OUT

V

=2.5V

OUT

V

=1.5V

OUT

V

=1.1V

OUT

V

=0.8V

OUT

V

:V

+1.62V

BIAS

OUT

I

:3A

OUT

C :1 F(Ceramic)

m

IN

C

:1 F(Ceramic)

m

OUT

R ,R :(seeTable1)

1

2

TPS744xx

SBVS066O – DECEMBER 2005 – REVISED MARCH 2013

www.ti.com

TYPICAL CHARACTERISTICS (continued)

At TJ = +25°C, VOUT = 1.5V, VIN = VOUT(TYP) + 0.3V, VBIAS = 3.3V, IOUT = 50mA, CIN = 1μF, CBIAS = 1μF, CSS = 0.01μF, and

COUT = 10μF, unless otherwise noted.

NOISE SPECTRAL DENSITY

Figure 17.

Figure 18.

IBIAS vs IOUT AND TEMPERATURE

IBIAS vs VBIAS AND VOUT

Figure 19.

Figure 20.

IBIAS SHUTDOWN vs TEMPERATURE

Figure 21.

10

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