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

No C

IN

TYPICAL POWER-SUPPLY RIPPLE REJECTION

TPS7A8001

GND

EN

FB

IN

OUT

V

IN

V

OUT

4.7 F

m

Ceramic

V

EN

R

1

R

2

Optional 1.0 F input capacitor.

May improve source impedance,

noise, or PSRR.

m

NR

To avoid inrush current,

it is recommended to

always connect a

1nF to 10nF capacitor

Typical Application Circuit for Adjustable Voltage Versions

IN

NR

IN

EN

6

7

8

5

4

OUT

OUT

FB/SNS

GND

DRBPACKAGE

3mmx3mmSON

(TOPVIEW)

1

2

3

TPS7A80xx

www.ti.com

SBVS135H – JUNE 2010 – REVISED JANUARY 2013

Low-Noise, Wide-Bandwidth, High PSRR,

Low-Dropout 1A Linear Regulator

Check for Samples: TPS7A80xx

1

FEATURES

DESCRIPTION

The

TPS7A80xx

family

of

low-dropout

linear

2

•

Low-Dropout 1A Regulator with Enable

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,

excellent transient response, and excellent PSRR

–

Adjustable Output Voltages: 0.8V to 6.0V

performance.

•

Wide-Bandwidth High PSRR:

The TPS7A80xx is stable with a 4.7

μF ceramic output

–

63dB at 1kHz

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.

•

(100Hz to 100kHz)

This device is fully specified over the temperature

•

Stable with a 4.7

μF Ceramic Capacitor

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

•

Excellent Load/Line Transient Response

•

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 © 2010–2013, 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.