TPS74401KTWR datasheet(6/29 Pages) TI

Part #	TPS74401KTWR

Description	3.0A Ultra-LDO with Programmable Soft-Start

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Manufacturer	TI [Texas Instruments]

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t (s) =

SS

V

C

I

REF

SS

×

0.8V

C (F)

0.73 A

SS

m

×

=

(1)

where tSS(s) = soft-start time in seconds.

TPS744xx

SBVS066O – DECEMBER 2005 – REVISED MARCH 2013

www.ti.com

Table 1. Standard 1% Resistor Values for Programming the Output Voltage(1)

R1 (kΩ)

R2 (kΩ)

VOUT (V)

Short

Open

0.8

0.619

4.99

0.9

1.13

4.53

1.0

1.37

4.42

1.05

1.87

4.99

1.1

2.49

4.99

1.2

4.12

4.75

1.5

3.57

2.87

1.8

3.57

1.69

2.5

3.57

1.15

3.3

(1)

VOUT = 0.8 × (1 + R1/R2)

Table 2. Standard Capacitor Values for Programming the Soft-Start Time(1)

CSS

SOFT-START TIME

Open

0.1ms

470pF

0.5ms

1000pF

1ms

4700pF

5ms

0.01

μF

10ms

0.015

μF

16ms

6

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