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DESCRIPTION

APPLICATIONS

0

10

20

30

40

50

60

70

80

1

10

100

1k

10k

100k 1M

10M

TPS79530

RIPPLEREJECTION

vs

FREQUENCY

Frequency (Hz)

Frequency(Hz)

0

0.1

0.2

0.3

0.4

0.5

100

1k

10k

100k

TPS79530

OUTPUT SPECTRALNOISEDENSITY

vs

FREQUENCY

1

2

3

4

5

DCQ PACKAGE

SOT223-6

(TOPVIEW)

NR/FB

OUT

GND

IN

EN

6

GND

EN

NC

GND

NR/FB

8

7

6

5

IN

IN

OUT

OUT

1

2

3

4

DRB PACKAGE

3mm x 3mm SON

(TOP VIEW)

TPS795xx

SLVS350G – OCTOBER 2002 – REVISED JULY 2006

ULTRALOW-NOISE, HIGH-PSRR, FAST, RF, 500-mA

LOW-DROPOUT LINEAR REGULATORS

•

500-mA Low-Dropout Regulator With Enable

The

TPS795xx

family

of

low-dropout

(LDO),

low-power linear voltage regulators features high

•

Available in Fixed and Adjustable (1.2-V to

power-supply rejection ratio (PSRR), ultralow noise,

5.5-V) Versions

fast start-up, and excellent line and load transient

•

High PSRR (50 dB at 10 kHz)

responses in small outline, SOT223-6 and 3 x 3 SON

•

Ultralow Noise (33

µV

packages. Each device in the family is stable with a

small 1-

µF ceramic capacitor on the output. The

•

Fast Start-Up Time (50

µs)

family uses an advanced,

proprietary

BiCMOS

•

Stable With a 1-

µF Ceramic Capacitor

fabrication process to yield extremely low dropout

•

Excellent Load/Line Transient Response

voltages (for example, 110 mV at 500 mA). Each

device achieves fast start-up times (approximately 50

•

Very Low Dropout Voltage (110 mV at Full

µs with a 0.001-µF bypass capacitor) while

Load, TPS79530)

consuming very low quiescent current (265

µA,

•

6-Pin SOT223 and 3

× 3 SON Packages

typical). Moreover, when the device is placed in

standby mode, the supply current is reduced to less

than 1

µA. The TPS79530 exhibits approximately 33

•

RF: VCOs, Receivers, ADCs

µV

0.1-

µF bypass capacitor. Applications with analog

•

Audio

components

that

are

noise-sensitive,

such

as

•

Bluetooth

portable RF electronics, benefit from the high-PSRR

•

Cellular and Cordless Telephones

and low-noise features, as well as from the fast

•

Handheld Organizers, PDAs

response time.

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.

Bluetooth is a registered trademark of Bluetooth SIG, Inc.

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2002–2006, 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.