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0.10

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0.40

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0.70

0.80

Frequency (Hz)

100

10k

100k

1k

0

10

20

30

40

50

60

70

80

f (Hz)

1

10k

10M

1k

10

100

100k

1M

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TPS786

SLVS389M – SEPTEMBER 2002 – REVISED SEPTEMBER 2015

TPS786 Ultralow-Noise, High-PSRR, Fast, RF, 1.5-A

Low-Dropout Linear Regulators

1 Features

3 Description

The TPS786 family of low-dropout (LDO) low-power

1

•

1.5-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,

Output Versions

and excellent line and load transient responses in

•

High PSRR (49 dB at 10 kHz)

small outline, SOT223-6 and DDPAK-5 packages.

Each device in the family is stable, with a small 1-

μF

•

Ultralow Noise (48

ceramic capacitor on the output. The family uses an

•

Fast Start-Up Time (50

μs)

advanced, proprietary BiCMOS fabrication process to

•

Stable With a 1-

μF Ceramic Capacitor

yield extremely low dropout voltages (for example,

390 mV at 1.5 A). Each device achieves fast start-up

•

Excellent Load and Line Transient Response

times (approximately 50

μs with a 0.001-μF bypass

•

Very Low Dropout Voltage (390 mV at Full Load,

capacitor)

while

consuming

very

low

quiescent

TPS78630)

current (265

μA, typical). Moreover, when the device

•

3 × 3 SON PowerPAD™, 6-Pin SOT223 and 5-Pin

is placed in standby mode, the supply current is

DDPAK Package

reduced to less than 1

μA. The TPS78630 exhibits

approximately 48

output

noise

with

a

0.1-

μF

bypass

capacitor.

2 Applications

Applications with analog components that are noise

•

RF: VCOs, Receivers, ADCs

sensitive, such as portable RF electronics, benefit

•

Audio

from the high PSRR, low noise features, and the fast

response time.

•

•

Cellular and Cordless Telephones

Device Information(1)

•

Handheld Organizers, PDAs

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TO-263 (5)

10.16 mm × 8.42 mm

TPS786

SOT-223 (6)

6.50 mm × 3.50 mm

SON (8)

3.00 mm × 3.00 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

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.