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TI introduces industry-leading ultra-low noise, high PSRR linear voltage regulators

   TI introduces industry-leading ultra-low noise, high PSRR linear voltage

LDOs reduce jitter, eliminate noise filters and simplify power design

PR Newswire

DALLAS, May 14, 2013

DALLAS, May 14, 2013 /PRNewswire/ -- Texas Instruments Incorporated (TI)
(NASDAQ: TXN) today introduced two high-current, low-dropout (LDO) linear
voltage regulators with excellent noise and power supply rejection ratio
(PSRR) performance in very small, easy-to-use packages. The 250-mA LP5907 and
800-mA LP38798 LDOs feature less than 10-µVrms output noise over the 10-Hz to
100-kHz bandwidth, eliminating the need for expensive and bulky filtering in a
wide range of high-performance applications. For more information, samples and
evaluation modules, visit and


250-mA LP5907 LDO

Designed to meet the requirements of RF and analog circuits in applications
such as mobile handsets, tablets and WiFi devices, the LP5907 linear regulator
provides ultra-low noise, high PSRR, low quiescent current and low line or
load transient response figures. Using innovative design techniques, the
LP5907 offers industry-leading noise performance without a bypass capacitor,
and includes the ability for remote output capacitor placement. The device is
designed to work with 1-µF input and output ceramic capacitors, and when used
in conjunction with the award-winning WEBENCH® online design tool, the LP5907
speeds and simplifies the design process.  Watch a video at

LP5907 key features and benefits

  o Output noise of less than 10-uVrms provides a clean supply for
    noise-sensitive applications.
  o PSRR of 75 dB at 1 kHz keeps a noisy supply from reaching target
  o Output voltage range between 1.2 V and 4.5 V in 25 mV steps enables a
    variety of designs.
  o Very small 0.65-mm by 0.65-mm by 0.40-mm micro SMD package allows
    placement very close to target application.

800-mA LP38798 LDO

The LP38798 is a high-performance linear regulator capable of supplying 800-mA
of output current. Designed to meet the requirements of sensitive RF and
analog circuitry in applications such as basestations, the LP38798 features a
unique linear topology on an advanced CMOS process to deliver ultra-low output
noise and high PSRR at switching power supply frequencies. The LP38798 is
stable with both ceramic and tantalum output capacitors and requires a minimum
output capacitance of just 1-µF for stability.

LP38798 key features and benefits

Output noise of 5 uVrms provides a clean supply for noise-sensitive

  o PSRR of 90 dB at 10 kHz keeps a noisy supply from reaching target
  o Wide operating input voltage range of 3 V to 20 V.
  o Very small 4.0-mm by 4.0-mm by 0.8-mm WSON package allows for placement
    very close to target application.

The LP5907 and LP38798 join TI's broad portfolio of LDO linear regulators,
which feature low quiescent current to increase efficiency in a variety of
applications. For more information, visit

Availability, packaging and pricing

The LP5907 and LP39798 LDOs are available in volume now from TI and its
authorized distributors. Offered in 5-pin SOT-23, 4-pin micro SMD and 4-pin
DSBGA ^ packages, the LP5907 is priced at US$0.23 in 1,000-unit quantities.
The LP39798 is offered in a 12-pin WSON package with thermal pad and is price
at US$1.30.

Find out more about TI's power portfolio:

  o Learn how to choose the best solution with "Fundamentals of Choosing LDO
    and Switching Regulators," which explains power trade-offs.
  o Watch a video to learn how to select an LDO for low noise applications:
  o Watch a video to learn how to select an LDO for your application:
  o Learn how to pick a linear regulator for noise-sensitive applications.
  o Download the LDO Quick Reference Guide:
  o Ask questions and share knowledge in the Power forum in the TI E2E™
  o Download power reference designs from TI's PowerLab™ Reference Design

About WEBENCH tools from Texas Instruments

The WEBENCH Designer and Architect component libraries include more than
24,000 components from 120 manufacturers. Price and availability is updated
hourly by TI's distribution partners for design optimization and production
planning. Offered in eight languages, the user can compare complete system
designs and make supply chain decisions in minutes. To start a cost-free
design, visit TI's WEBENCH design environment at

About Texas Instruments

Texas Instruments semiconductor innovations help 90,000 customers unlock the
possibilities of the world as it could be – smarter, safer, greener, healthier
and more fun. Our commitment to building a better future is ingrained in
everything we do – from the responsible manufacturing of our semiconductors,
to caring for our employees, to giving back inside our communities. This is
just the beginning of our story. Learn more at


WEBENCH is a registered trademark and TI E2E and PowerLab are trademarks of
Texas Instruments. All other trademarks belong to their respective owners.

SOURCE Texas Instruments Incorporated

Contact: Gayle Bullock, Texas Instruments, +1-408-721-2033,, or Mary Dunnie, GolinHarris, +1-972-341-2576
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