DBV 5

DBV 6

YZQ

www.ti.com

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

IN

EN

OUT

NR

GND

YZQ PACKAGE

(TOP VIEW)

A3

A1

C3

C1

B2

TPS730xx

SBVS054E – NOVEMBER 2004 – REVISED AUGUST 2005

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, 2.8-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. NanoStar™

•

High PSRR (68dB at 1 kHz)

packaging gives an ultrasmall footprint as well as an

•

Ultralow-Noise (23

µV

ultralow profile and package weight, making it ideal

for portable applications such as handsets and PDAs.

•

Fast Start-Up Time (50

µs)

Each device in the family is stable, with a small

•

Stable With a 2.2-

µF Ceramic Capacitor

2.2-

µF ceramic capacitor on the output. The

•

Excellent Load/Line Transient Response

TPS730xx family uses an advanced, proprietary

BiCMOS fabrication process to yield low dropout

•

Very Low Dropout Voltage (120 mV at Full

voltages (e.g., 120 mV at 200 mA, TPS73030). Each

Load)

device achieves fast start-up times (approximately 50

•

5- and 6-Pin SOT23 (DBV), and Wafer Chip

µs with a 0.001-µF bypass capacitor) while consum-

Scale (YZQ) Packages

ing low quiescent current (170

µA typical). Moreover,

when the device is placed in standby mode, the

supply current is reduced to less than 1

µA. The

•

RF: VCOs, Receivers, ADCs

TPS73018 exhibits approximately 23

µV

voltage noise at 2.8-V output with a 0.01-

µF bypass

•

Audio

capacitor. Applications with analog components that

•

Cellular and Cordless Telephones

are noise-sensitive, such as portable RF electronics,

•

Bluetooth

benefit from the high PSRR and low-noise features

•

Handheld Organizers, PDAs

as well as the fast response time.

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.

NanoStar is a trademark of Texas Instruments.

Bluetooth is a registered trademark of Bluetooth Sig, Inc.

PRODUCTION DATA information is current as of publication date.

Copyright © 2004–2005, 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.