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FEATURES

DESCRIPTION

APPLICATIONS

DCQ PACKAGE

SOT223

(TOP VIEW)

1

2

3

4

5

IN

OUT

GND

NR/FB

EN

TAB IS GND

DBV PACKAGE

SOT23

(TOP VIEW)

IN

GND

EN

NR/FB

OUT

1

2

3

4

5

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)

TPS732xx

GND

EN

NR

IN

OUT

V

IN

V

OUT

Optional

Optional

Optional

Typical Application Circuit for Fixed-Voltage Versions

TPS732xx

SBVS037I – AUGUST 2003 – REVISED MAY 2006

Cap-Free, NMOS, 250mA Low Dropout Regulator

with Reverse Current Protection

•

Stable with No Output Capacitor or Any Value

The TPS732xx family of low-dropout (LDO) voltage

or Type of Capacitor

regulators uses a new topology: an NMOS pass

element in a voltage-follower configuration. This

•

Input Voltage Range: 1.7V to 5.5V

topology is stable using output capacitors with low

•

Ultralow Dropout Voltage: 40mV Typ at

ESR, and even allows operation without a capacitor.

250mA

It also provides high reverse blockage (low reverse

•

Excellent Load Transient Response—with or

current) and ground pin current that is nearly

without Optional Output Capacitor

constant over all values of output current.

•

New NMOS Topology Provides Low Reverse

The TPS732xx uses an advanced BiCMOS process

Leakage Current

to yield high precision while delivering very low

dropout voltages and low ground pin current. Current

•

Low Noise: 30

µV

consumption, when not enabled, is under 1

µA and

•

0.5% Initial Accuracy

ideal for portable applications. The extremely low

•

1% Overall Accuracy (Line, Load, and

output noise (30

µV

Temperature)

powering VCOs. These devices are protected by

thermal shutdown and foldback current limit.

•

Less Than 1

µA Max I

•

Thermal Shutdown and Specified Min/Max

Current Limit Protection

•

Available in Multiple Output Voltage Versions

– Fixed Outputs of 1.20V to 5.0V

– Adjustable Outputs from 1.20V to 5.5V

– Custom Outputs Available

•

Portable/Battery-Powered Equipment

•

Post-Regulation for Switching Supplies

•

Noise-Sensitive Circuitry such as VCOs

•

Point of Load Regulation for DSPs, FPGAs,

ASICs, and Microprocessors

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 © 2003–2006, 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.