1

FEATURES

DESCRIPTION

APPLICATIONS

IN

N/C

N/C

EN

8

7

6

5

OUT

N/C

NR/FB

GND

1

2

3

4

DRBPACKAGE

3mmx3mmSON

(TOPVIEW)

DCQPACKAGE

SOT223

(TOPVIEW)

1

2

3

4

5

IN

OUT

GND

NR/FB

EN

TABISGND

TypicalApplicationCircuit

TPS737xx

GND

EN

FB

IN

OUT

V

IN

V

OUT

Optional

1.0 F

m

6

OFF

ON

TPS737xx

1A Low-Dropout Regulator

with Reverse Current Protection

2

• Stable with 1.0µF or Larger Ceramic Output

Capacitor

The TPS737xx family of linear low-dropout (LDO)

voltage regulators uses an NMOS pass element in a

• Input Voltage Range: 2.2V to 5.5V

voltage-follower

configuration.

This

topology

is

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

relatively insensitive to output capacitor value and

• Excellent Load Transient Response—Even

ESR, allowing a wide variety of load configurations.

With Only 1.0µF Output Capacitor

Load transient response is excellent, even with a

small 1.0µF ceramic output capacitor. The NMOS

• NMOS Topology Delivers Low Reverse

topology also allows very low dropout.

Leakage Current

• 1.0% Initial Accuracy

The TPS737xx family uses an advanced BiCMOS

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

• Less Than 20nA typical I

20nA and ideal for portable applications. These

• Thermal Shutdown and Current Limit for Fault

devices are protected by thermal shutdown and

foldback current limit.

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

1

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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 © 2006–2008, 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.