100

1 k

10 k

100 k

Frequency (Hz)

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

I

= 1.5 A

OUT

I

= 1 A

OUT

V

= 5.5 V

IN

C

= 2.2 F

C

= 0.1 F

OUT

NR

m

m

80

70

60

50

40

30

20

10

0

1

10

100

1 k

10 k

100 k

1 M

10 M

Frequency (Hz)

I

= 1 mA

OUT

I

= 1 A

OUT

V

= 4 V

IN

C

= 10 F

C

= 0.01 F

OUT

NR

m

m

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

TPS79601, TPS79613, TPS79618, TPS79625

TPS79628, TPS79630, TPS79633, TPS79650

SLVS351P – SEPTEMBER 2002 – REVISED MARCH 2015

TPS796xx Ultralow-Noise, High PSRR, Fast, RF, 1-A Low-Dropout Linear Regulators

1 Features

3 Description

The TPS796 family of low-dropout (LDO) low-power

1

•

1-A Low-Dropout Regulator With Enable

linear voltage regulators features high power-supply

•

Available in Fixed and Adjustable (1.2 V to 5.5 V)

rejection ratio (PSRR), ultralow-noise, fast start-up,

Versions

and excellent line and load transient responses in

•

High PSRR (53 dB at 10 kHz)

small outline, 3 × 3 VSON, SOT223-6, and TO-263

packages. Each device in the family is stable with a

•

Ultralow-Noise (40

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

voltages (for example, 250 mV at 1 A). Each device

•

Excellent Load and Line Transient Response

achieves fast start-up times (approximately 50

μs with

•

Very Low Dropout Voltage (250 mV at Full Load,

a 0.001-

μF bypass capacitor) while consuming very

TPS79630)

low quiescent current (265

μA typical). Moreover,

•

3 × 3 VSON PowerPAD™, SOT223-6, and

when the device is placed in standby mode, the

TO-263 Packages

supply current is reduced to less than 1

μA. The

TPS79630 exhibits approximately 40

voltage noise at 3.0-V output, with a 0.1-

μF bypass

2 Applications

capacitor. Applications with analog components that

•

RF: VCOs, Receivers, ADCs

are noise sensitive, such as portable RF electronics,

•

Audio

benefit from the high PSRR, low noise features, and

need fast response time.

•

•

Cellular and Cordless Telephones

Device Information(1)

•

Handheld Organizers, PDAs

PART NUMBER

PACKAGE

BODY SIZE (NOM)

VSON (8)

3.00 mm × 3.00 mm

TPS796

SOT-223 (6)

6.50 mm × 3.50 mm

TO-263 (5)

10.16 mm × 8.42 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Ripple Rejection vs Frequency

Output Spectral Noise Density vs Frequency

TPS79630

TPS79630

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.