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

TPS74401-EP

SBVS122B – MARCH 2010 – REVISED SEPTEMBER 2010

www.ti.com

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with

appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more

susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

DESCRIPTION

The TPS74401 low-dropout (LDO) linear regulator provides an easy-to-use robust power management solution

for a wide variety of applications. User-programmable soft-start minimizes stress on the input power source by

reducing capacitive inrush current on start-up. The soft-start is monotonic and well-suited for powering many

different types of processors and ASICs. The enable input and power-good output allow easy sequencing with

external regulators. This complete flexibility permits the user to configure a solution that will meet the sequencing

requirements of FPGAs, DSPs, and other applications with specific start-up requirements.

A precision reference and error amplifier deliver 1% accuracy over load, line, temperature, and process. Each

LDO is stable with low-cost ceramic output capacitors and the device is fully specified from –55°C to 125°C.

Figure 2. Turn-On Response

ORDERABLE PART NUMBER

TOP-SIDE MARKING

–55°C to 125°C

QFN (RGW)

Reel of 3000

TPS74401MRGWREP

TPS74401EP

(1)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

Web site at www.ti.com.

(2)

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at

www.ti.com/sc/package.

2

Submit Documentation Feedback

Copyright © 2010, Texas Instruments Incorporated

Product Folder Link(s): TPS74401-EP