DBV 5

DBV 6

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FEATURES

DESCRIPTION

APPLICATIONS

3

2

4

5

DBV PACKAGE

(TOP VIEW)

1

IN

GND

EN

OUT

NR

Fixed Option

3

2

4

6

DBV PACKAGE

(TOP VIEW)

1

IN

GND

EN

OUT

NR

5

FB

Adjustable Option

TPS73028

RIPPLE REJECTION

vs

FREQUENCY

10

100

1 k

10 k

10

40

80

100 k

1 M

10 M

Frequency (Hz)

50

0

20

30

60

70

90

100

0

0.05

0.10

0.15

0.20

0.25

0.30

100

1 k

10 k

100 k

Frequency (Hz)

TPS73028

OUTPUT SPECTRAL NOISE DENSITY

vs

FREQUENCY

TPS73001, TPS73018

TPS73025

TPS73030, TPS73033

SBVS054A – NOVEMBER 2004 – REVISED NOVEMBER 2004

LOW-NOISE, HIGH PSRR, RF 200-mA

LOW-DROPOUT LINEAR REGULATORS

•

200-mA RF Low-Dropout Regulator

The

TPS730xx

family

of

low-dropout

(LDO)

With Enable

low-power linear voltage regulators features high

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

•

Available in 1.8-V, 2.5-V, 3-V, 3.3-V, and

fast start-up, and excellent line and load transient

Adjustable (1.22-V to 5.5-V)

responses a small SOT23 package. Each device in

•

High PSRR (68dB at 1 kHz)

the family is stable, with a small 2.2-µF ceramic

•

capacitor on the output. The TPS730xx family uses

an advanced, proprietary BiCMOS fabrication pro-

•

Fast Start-Up Time (50 µs)

cess to yield low dropout voltages (e.g., 120 mV at

•

Stable With a 2.2-µF Ceramic Capacitor

200 mA, TPS73030). Each device achieves fast

•

Excellent Load/Line Transient Response

start-up times (approximately 50 µs with a 0.001-µF

bypass capacitor) while consuming low quiescent

•

Very Low Dropout Voltage (120 mV at Full

current (170 µA typical). Moreover, when the device

Load)

is placed in standby mode, the supply current is

•

5- and 6-Pin SOT23 (DBV) Package

reduced to less than 1 µA. The TPS73018 exhibits

2.8-V output with a 0.01-µF bypass capacitor. Appli-

•

RF: VCOs, Receivers, ADCs

cations

with

analog

components

that

are

noise-sensitive, such as portable RF electronics,

•

Audio

benefit from the high PSRR and low-noise features

•

Cellular and Cordless Telephones

as well as the fast response time.

•

Bluetooth™, Wireless LAN

•

Handheld Organizers, PDAs

Figure 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.

Bluetooth is a trademark of Bluetooth Sig, Inc.

PRODUCTION DATA information is current as of publication date.

Copyright © 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.