TypicalApplicationCircuit

TPS737xx

GND

EN

FB

IN

OUT

V

IN

V

OUT

Optional

1.0 F

m

OFF

ON

IN

N/C

N/C

EN

8

7

6

5

OUT

N/C

NR/FB

GND

1

2

3

4

DRB PACKAGE

3mm x 3mm SON

(TOP VIEW)

DCQ PACKAGE

SOT223

(TOP VIEW)

1

2

3

4

5

IN

OUT

GND

NR/FB

EN

TAB IS GND

6

IN

N/C

EN

6

5

4

OUT

NR/FB

GND

1

2

3

2mm x 2mm SON

(TOP VIEW)

TPS737xx

www.ti.com

SBVS067O – JANUARY 2006 – REVISED JUNE 2012

1A Low-Dropout Regulator

with Reverse Current Protection

1

FEATURES

DESCRIPTION

The TPS737xx family of linear low-dropout (LDO)

2

•

Stable with 1.0

μF or Larger Ceramic Output

voltage regulators uses an NMOS pass element in a

Capacitor

voltage-follower

configuration.

This

topology

is

•

Input Voltage Range: 2.2V to 5.5V

relatively insensitive to output capacitor value and

•

Ultra-Low Dropout Voltage: 130mV typ at 1A

ESR, allowing a wide variety of load configurations.

Load transient response is excellent, even with a

•

Excellent Load Transient Response—Even

small 1.0

μF ceramic output capacitor. The NMOS

With Only 1.0

μF Output Capacitor

topology also allows very low dropout.

•

NMOS Topology Delivers Low Reverse

The TPS737xx family uses an advanced BiCMOS

Leakage Current

process to yield high precision while delivering very

•

1.0% Initial Accuracy

low dropout voltages and low ground pin current.

•

3% Overall Accuracy Over Line, Load, and

Current consumption, when not enabled, is under

Temperature

20nA and ideal for portable applications. These

devices are protected by thermal shutdown and

•

foldback current limit.

•

Thermal Shutdown and Current Limit for Fault

Protection

•

Available in Multiple Output Voltage Versions

–

Adjustable Output: 1.20V to 5.5V

–

Custom Outputs Available Using Factory

Package-Level Programming

APPLICATIONS

•

Point of Load Regulation for DSPs, FPGAs,

ASICs, and Microprocessors

•

Post-Regulation for Switching Supplies

•

Portable/Battery-Powered Equipment

(1)

Power

dissipation

may

limit

operating

range. Check Thermal Information table.

space

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 © 2006–2012, 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.