TPS74401RGRT datasheet(11/40 Pages) TI1

No de pièce	TPS74401RGRT

Description	3.0-A, Ultra-LDO with Programmable Soft-Start

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Fabricant	TI1 [Texas Instruments]

Site Internet	http://www.ti.com

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1V/div

500mV/div

Time(1ms/div)

C

=0 F

SS

m

C

=0.001 F

SS

m

C

=0.0047 F

SS

m

V

OUT

V

EN

0V

1.1V

Time(20ms/div)

V

(500mV/div)

PG

V

OUT

V

=V

IN

BIAS

EN

10mV/div

500mV/div

Time(50 s/div)

m

C

=2x470 F(OSCON)

OUT

m

C

=100 F(Cer.)

OUT

m

C

=10 F(Cer.)

OUT

m

C

=0 F

OUT

m

1V/ s

m

4.3V

3.3V

10mV/div

500mV/div

Time(50 s/div)

m

C

=2x470 F

OUT

m

C

=100 F(Cer.)

OUT

m

C

=10 F

OUT

(Cer.)

m

C

=0 F

OUT

m

1V/ s

m

2.5V

1.5V

V

=1.2V

OUT

(OSCON)

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)

50mV/div

2A/div

Time(50 s/div)

m

C

= 2x470 F(OSCON)

OUT

m

C

= 100 F Cer.

OUT

m

C

= 10 F Cer.

OUT

m

C

=

OUT

0 F

m

1A/ s

m

3.0A

100mA

TPS74401

www.ti.com

SBVS066Q – DECEMBER 2005 – REVISED APRIL 2015

Typical Characteristics (continued)

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

COUT = 10 μF, unless otherwise noted.

Figure 20. Load Transient Response

Figure 19. Low-Level PG Voltage vs PG Current

Figure 21. VBIAS Line Transient (3 A)

Figure 22. VIN Line Transient (3 A)

Figure 23. Turn-On Response

Figure 24. Power-Up, Power-Down

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