TPS74301 datasheet(9/27 Pages) TI

Part #	TPS74301

Description	1.5A Ultra-LDO with Programmable Sequencing

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Manufacturer	TI [Texas Instruments]

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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

+125 C

°

+25 C

°

-

°

40 C

0.45

0.40

0.35

0.30

0.25

0.20

0.15

0.10

0.05

0

-40

-20

0

20

40

60

80

100

JunctionTemperature( C)

°

120

V

=2.375V

BIAS

V

=5.5V

BIAS

1V/div

Time(50 s/div)

m

V

OUT

0V

1.1V

V

EN

V

=V

I

=1.5A

TRACK

IN

OUT

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

2

4

6

8

10

12

PGCurrent(mA)

Time(20 s/div)

m

V

OUT

50mV/div

I

OUT

500mA/div

OutputOpen

OutputShorted

TPS74301

SBVS065E – DECEMBER 2005 – REVISED MAY 2007

TYPICAL CHARACTERISTICS (continued)

At TJ = +25°C, VOUT = 1.5V, VIN = VOUT(TYP) + 0.3V, VBIAS = 3.3V, IOUT = 50mA, EN = VIN, CIN = 1µF, CBIAS = 4.7µF, and COUT = 10µF,

unless otherwise noted.

IBIAS vs VBIAS AND VOUT

IBIAS SHUTDOWN vs TEMPERATURE

Figure 21.

Figure 22.

TURN-ON RESPONSE–QFN PACKAGE

LOW-LEVEL PG VOLTAGE vs PG CURRENT

Figure 23.

Figure 24.

OUTPUT SHORT-CIRCUIT RECOVERY

Figure 25.

9

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