0.5V/div

V

OUT

V

EN

1V/div

Time(1ms/div)

C

C

C

1.2V

0V

TPS74801

GND

EN

FB

IN

PG

BIAS

SS

OUT

V

IN

R

1

R

2

R

3

C

OUT

C

IN

C

SS

V

BIAS

C

BIAS

V

OUT

TPS74801-Q1

www.ti.com

SLVSAI4B – OCTOBER 2010 – REVISED JULY 2013

1.5 A Low-Dropout Linear Regulator with Programmable Soft-Start

Check for Samples: TPS74801-Q1

1

FEATURES

APPLICATIONS

2

•

Qualified for Automotive Applications

•

FPGA Applications

•

AEC-Q100 Qualified with the Following

•

DSP Core and I/O Voltages

Results:

•

Post-Regulation Applications

–

Device Temperature Grade 1: –40°C to

•

Applications with Special Start-Up Time or

125°C Ambient Operating Temperature

Sequencing Requirements

Range

•

Hot-Swap and Inrush Controls

–

Device HBM ESD Classification Level H2

–

Device HBM ESD Classification Level C4B

DESCRIPTION

The TPS74801-Q1 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-

•

Power Good (PG) Output Allows Supply

suited

for

powering

many

different

types

of

Monitoring or Provides a Sequencing Signal

processors and ASICs. The enable input and power

for Other Supplies

good output allow easy sequencing with external

•

2% Accuracy Over Line/Load/Temperature

regulators. This complete flexibility permits the user to

configure a solution that meets the sequencing

•

Programmable Soft-Start Provides Linear

requirements

of

FPGAs,

DSPs,

and

other

Voltage Startup

applications with special start-up requirements.

•

A precision reference and error amplifier deliver 2%

Transient Response

accuracy over load, line, temperature, and process.

•

Stable with Any Output Capacitor

≥ 2.2 μF

The device is stable with any type of capacitor

•

Available in a Small 3-mm x 3-mm x 1-mm

greater than or equal to 2.2

μF, and is fully specified

SON-10 and 5 x 5 QFN-20 Packages

from –40°C to 105°C for the DRC package, and from

–40°C

to

125°C

for

the

RGW

package.

The

TPS74801-Q1 is offered in a small 3-mm × 3-mm

SON-10 package, yielding a highly compact, total

solution size. It is also available in a 5 x 5 QFN-20 for

compatibility with the TPS74401.

Figure 1. Typical Application Circuit (Adjustable)

Figure 2. Turn-On Response

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2010–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.