TPS74401-EP Datasheet, PDF (2/26 Pages) Texas Instruments – 3.0-A ULTRA-LDO WITH PROGRAMMABLE SOFT-START

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.
500mV/div
C_SS = 0mF
C_SS = 0.001mF
C_SS = 0.0047mF
V_OUT
1.1V
V_EN
1V/div _0V
Time (1ms/div)
Figure 2. Turn-On Response
T_A
–55°C to 125°C
Table 1. ORDERING INFORMATION⁽¹⁾
PACKAGE ⁽²⁾
ORDERABLE PART NUMBER
QFN (RGW)
Reel of 3000
TPS74401MRGWREP
TOP-SIDE MARKING
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
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