IN

NR

IN

EN

6

7

8

5

4

OUT

OUT

FB/SNS

GND

DRBPACKAGE

3mmx3mmSON

(TOPVIEW)

1

2

3

TYPICALPOWER-SUPPLYRIPPLEREJECTION

TPS7A8001

GND

EN

FB

IN

OUT

V

IN

V

OUT

4.7 F

m

Ceramic

V

EN

R

1

R

2

Optional1.0 Finputcapacitor.

Mayimprovesourceimpedance,

noise,orPSRR.

m

NR

Toavoidinrushcurrent,

itisrecommendedto

alwaysconnecta

1nFto10nFcapacitor

90

80

70

60

50

40

30

20

10

10

100

1k

10k

100k

1M

Frequency(Hz)

10M

I

=10mA

OUT

I

=100mA

OUT

I

=750mA

OUT

I

=1A

OUT

V

=1.0V

DO

NoC

IN

TypicalApplicationCircuitforFixedVoltageVersions

TPS7A80xx

www.ti.com

SBVS135A – JUNE 2010 – REVISED JUNE 2010

Low-Noise, High-Bandwidth PSRR,

Low-Dropout 1A Linear Regulator

Check for Samples: TPS7A80xx

1

FEATURES

DESCRIPTION

2

•

Low-Dropout 1A Regulator with Enable

The

TPS7A80xx

family

of

low-dropout

linear

regulators (LDOs) offer very high power-supply ripple

•

Available in Multiple Output Versions:

rejection (PSRR) at the output. This series of LDOs

–

Fixed Output Voltages: 0.8V to 5.0V Using

uses

an

advanced

BiCMOS

process

and

a

Innovative Factory EEPROM Programming

PMOSFET pass device to achieve very low noise,

–

Adjustable Output Voltages: 0.8V to 6.0V

excellent transient response, and excellent PSRR

performance.

•

Ultra-High PSRR:

–

63dB at 1kHz

The TPS7A80xx is stable with a 4.7mF ceramic output

capacitor, and uses a precision voltage reference and

–

57dB at 100kHz

feedback loop to achieve a worst-case accuracy of

–

38dB at 1MHz

3% over all load, line, process, and temperature

•

variations.

100kHz)

This device is fully specified over the temperature

•

Stable with a 4.7mF Ceramic Capacitor

•

Excellent Load/Line Transient Response

3mm × 3mm, SON-8 package with a thermal pad.

•

3% Overall Accuracy (over Load/Line/Temp)

•

Over-Current and Over-Temperature

Protection

•

Very Low Dropout: 170mV Typical at 1A

•

3mm × 3mm SON-8 DRB Package

APPLICATIONS

•

Telecom Infrastructure

•

Audio

•

High-Speed I/F (PLL/VCO)

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 © 2010, 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.