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FEATURES

DESCRIPTION

APPLICATIONS

DCQPACKAGE

SOT223

(TOPVIEW)

1

2

3

4

5

IN

OUT

GND

FB/NC

EN

TABISGND

TypicalApplicationCircuit

TPS737xx

GND

EN

FB

IN

OUT

V

IN

V

OUT

Optional

1.0 F

m

TPS737xx

SBVS067C – JANUARY 2006 – REVISED AUGUST 2006

1A Low-Dropout Regulator

with Reverse Current Protection

•

Stable with 1.0µF or Larger Ceramic Output

The TPS737xx family of linear low-dropout (LDO)

Capacitor

voltage regulators uses an NMOS pass element in a

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.

•

Excellent Load Transient Response—Even

Load transient response is excellent, even with a

With Only 1.0µF Output Capacitor

small 1.0µF ceramic output capacitor. The NMOS

topology also allows very low dropout for the die size

•

NMOS Topology Delivers Low Reverse

used.

Leakage Current

The TPS737xx family uses an advanced BiCMOS

•

0.5% Initial Accuracy

process to yield high precision while delivering very

•

3% Overall Accuracy Over Line, Load, and

low dropout voltages and low ground pin current.

Temperature

Current consumption, when not enabled, is under

•

1

µA and ideal for portable applications. These

devices are protected by thermal shutdown and

•

Thermal Shutdown and Current Limit for

foldback current limit.

Fault Protection

•

Available in Multiple Output Voltage Versions

– Adjustable Output: 1.20V to 5.5V

– Custom Outputs Available Using Factory

Package-Level Programming

•

Point of Load Regulation for DSPs, FPGAs,

ASICs, and Microprocessors

•

Post-Regulation for Switching Supplies

•

Portable/Battery-Powered Equipment

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.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2006, 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.