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DESCRIPTION

APPLICATIONS

GND

EN

NR

IN

OUT

V

IN

V

OUT

Optional

Optional

Optional

Typical Application Circuit for Fixed-Voltage Versions

DBV PACKAGE

SOT23

(TOP VIEW)

IN

GND

EN

NR/FB

OUT

1

2

3

4

5

TPS731xx

TPS73101, TPS73115, TPS73118

TPS73125, TPS73130, TPS73132

TPS73133, TPS73150

SBVS034E – SEPTEMBER 2003 – REVISED SEPTEMBER 2004

Cap-Free, NMOS, 150mA Low Dropout Regulator

with Reverse Current Protection

•

Stable with No Output Capacitor or Any Value

The TPS731xx family of low-dropout (LDO) linear

or Type of Capacitor

voltage regulators uses a new topology: an NMOS

pass element in a voltage-follower configuration. This

•

Input Voltage Range of 1.7V to 5.5V

topology is stable using output capacitors with low

•

Ultralow Dropout Voltage: 30mV Typ

ESR, and even allows operation without a capacitor.

•

Excellent Load Transient Response—with or

It also provides high reverse blockage (low reverse

without Optional Output Capacitor

current) and ground pin current that is nearly constant

over all values of output current.

•

New NMOS Topology Provides Low Reverse

Leakage Current

The TPS731xx uses an advanced BiCMOS process

to yield high precision while delivering very low

•

dropout voltages and low ground pin current. Current

•

0.5% Initial Accuracy

consumption, when not enabled, is under 1µA and

•

1% Overall Accuracy over Line, Load, and

ideal for portable applications. The extremely low

Temperature

powering VCOs. These devices are protected by

•

thermal shutdown and foldback current limit.

•

Thermal Shutdown and Specified Min/Max

Current Limit Protection

•

Available in Multiple Output Voltage Versions

– Fixed Outputs of 1.2V, 1.5V, 1.8V, 2.5V, 3.0V,

3.3V, and 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.

PRODUCTION DATA information is current as of publication date.

Copyright © 2003–2004, 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.