National also offers online tools that enable power designers to
select the best power management chips for their applications.
National's key analog markets include wireless handsets , displays and a
variety of broad electronics markets, including medical, automotive,
industrial , and test and measurement applications.6
V to 5.5 V. The low supply current of 32 uA further contributes to long standby
operation.

Pricing and Availability
Available now and priced in 1,000-unit quantities, the LM2770 is $1.

About National Semiconductor
National Semiconductor , the industry's premier analog company, creates
high-performance analog devices and subsystems. National's leading-edge
products include power management circuits, display drivers, audio and
operational amplifiers, communication interface products and data conversion
solutions.

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National is
demonstrating the LM5035 in booth 8/9 at the Applied Power Electronics
Conference (APEC) in Dallas today through Wednesday.com

com

theses darnell

"Most competitors' half-bridge controllers require an external half-bridge
FET driver, which increases the solution footprint and introduces timing
errors due to propagation delays," said Paul Greenland, director of strategic
marketing for National Semiconductor 's Power Management Group.com .

About National Semiconductor
National Semiconductor , the industry's premier analog company, creates
high-value analog devices and subsystems.com .

topologies smps

90 in 1,000-unit quantities.

Media Contact
Megan Carter Design Support Group
National Semiconductor 800-272-9959
408-721-6929 http://www. The LM2770 also features user-selectable output voltages for
increased flexibility of design and a low-power, low-dropout sleep mode that
reduces the quiescent current and dramatically improves standby times.

It is specifically not intended for listing manufacturers and distributors of power supplies and electronic components as well as providers of engineering services , which should instead be listed in the appropriate business category such as: Business/Industries/Manufacturing /Electronics.

switchmode pspice

"

Key Technical Specifications of National's New Step-Down Converters
The LM2770 is a regulated switched capacitor step-down DC-DC converter
with an output current capability of 250 mA over an input range of 2.html and
http://www. For more information on
National's power management products, visit http://power.national. Headquartered in Santa
Clara, California, National reported sales of $1.

powersystems switching

national.

Power electronics is a particular field of engineering that deals with transfer of electric energy from a source to a load using electronics circuits.

diodes rectifiers

National's innovative power management products include
best-in-class linear regulators; power monitoring, control and reference ICs;
and switching converters, such as high-voltage ICs for DC-DC conversion,
switched capacitor converters, lighting management ICs and inductive switching
converters.com/pf/LM/LM5035 .
"Top mobile phone manufacturers rely on National Semiconductor to provide
solutions that deliver the ideal combination of efficiency and size," said
Peter Henry, vice president of National Semiconductor's Portable Power
Products Group.

About National's Power Management Products
National Semiconductor is the number one supplier of power management ICs
with 12.national .

Media Contact Reader Information
Gayle Bullock Design Support Group
(408) 721-2033 (800) 272-9959
http://www.

balog thyristors

All other brand or product names are
trademarks or registered trademarks of their respective holders . It is available in fixed output voltage options of 1.3 percent growth for
the industry during the same time period.html . The company's analog products are also optimized for numerous
applications in a variety of electronics markets, including medical,
automotive, industrial and test and measurement .

gurion synchronous

national. The buck converters feature a dynamic-gain architecture that
provides up to 90 percent efficiency in a very small, inductor-free footprint. One signal monitors the
battery and indicates when the input voltage falls below 2.85 V while another
pin verifies that the output voltage is no more than 5 percent below the
nominal output voltage of the part.

switching gurion

National's
Webench(R) design tool allows designers to choose a product, create and
analyze a design, and then build custom prototypes that can be delivered
within 24 hours.national. National's leading-edge products
include power management circuits, display drivers, audio and operational
amplifiers, communication interface products and data conversion solutions. Headquartered in Santa
Clara, California, National reported sales of $1.com
megan.
These devices power application circuits in portable devices including
wireless handsets, digital still cameras, MP3 players, PDAs, hard disk drives,
wireless LAN and other low -power, small form-factor products.5 V and
1.0 V.com/pf/LM/LM2770. National's key markets include wireless handsets, displays, PCs and
laptops.98 billion for fiscal 2004,
which ended May 30, 2004 .

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Applications for LM5035 half-bridge power supplies include telecommunications,
data communications and industrial control systems where power density and
efficiency are primary concerns.carter@nsc . Tiny Buck Converters Feature Dynamic-Gain Architecture for Up to 90 Percent
Efficiency in an Inductor-Free Footprint

CTIA, NEW ORLEANS, National
Semiconductor Corporation (NYSE: NSM), a world leader in power management
technology, today introduced four new step-down DC -DC converters for portable
systems.
The LM2770, LM2788, LM2797 and LM2798 DC-DC converters feature output
currents up to 250 mA over the extended Li-Ion battery range of 2.00, and the LM2797 and LM2798 are each $1.

NOTE: National Semiconductor, LLP and WEBENCH are registered trademarks
of National Semiconductor Corporation.

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National Semiconductor Introduces 100V Half-Bridge PWM Controller With Industry's Highest Level of Integration

1 percent market share, according to iSuppli's 2005 voltage
regulator/reference survey.5
V.7 V to
5. Pin-selectable
output voltages provide flexibility for system design. The LM2770 is
available in a miniature 10-pin, non-pullback LLP(R ) package.5 V,
1. More information about National's power management products is
available at http://power.national.

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The result is a robust solution with
industry-leading power density for highly compact power modules such as
one-eighth and one-sixteenth bricks.
The LM2788 is a regulated switched capacitor step-down DC-DC converter
with an output current capability of 120 mA over an input voltage range of 2. National's power management revenue grew 29. National's WEBENCH(R) online design tool
allows designers to select a power management product, create and analyze a
design , and then build custom prototypes that can be delivered within 24
hours. Additional company and product information is
available at http://www.

pspice designline

LM5035 Integrates a 100V, 2A Primary-side Half -bridge Driver and Fully
Featured PWM Controller to Maximize Conversion Efficiency and Power Density

APEC, DALLAS, National Semiconductor
Corporation (NYSE: NSM), a worldwide leader in power management technology,
today introduced a 100V half-bridge pulse-width modulation (PWM) controller
that offers the industry's highest level of integration to minimize the
overall solution size of half-bridge DC-DC converters."

About the LM5035
The LM5035 half-bridge controller and gate driver contains all of the
features necessary to implement half-bridge-topology power converters using
voltage-mode control with line feed-forward.

Pricing and Availability
Available now, the LM5035 is priced at $1.

NOTE: National Semiconductor and WEBENCH are registered trademarks of
National Semiconductor Corporation.national.com .

switched gurion

It also includes:
-- Synchronous rectifier controls with programmable delays that allow
users to optimize power efficiency by tuning the secondary-side and
primary-side FET switch timing
-- Voltage-mode control for stable operation in half-bridge topology and
better noise immunity than current mode control
-- Line feed-forward compensation to improve regulation during input line
voltage fluctuations
-- Resistor-programmed oscillator capable of operating up to 2 MHz
-- Synchronization capability to lock the PWM to an external oscillator
for reduced electro-magnetic interference
-- Programmable line under-voltage lockout to control power-on sequencing
and minimize start-up current surges
-- Remote thermal sensor interface that directly connects to an external
thermister
-- Adjustable soft-start for safe start-up in applications with large
capacitive loads
-- Versatile, dual-mode over-current protection with hiccup delay timer to
reduce power dissipation during a continuous load fault
-- Cycle-by-cycle over-current limiting to protect power supply components
from instantaneous overload conditions
-- Unique, current-mode opto-coupler interface that increases the
bandwidth of conventional opto-couplers
-- Precision 5V output that eliminates the need for an external reference
or a bias supply for housekeeping circuits

About National's Power Management Products
National Semiconductor is the number one supplier of power management ICs
with 14. A choice of two tiny packages along with four small
ceramic capacitors and no external inductor provides the engineer with an
extremely compact footprint that minimizes board space and optimizes the bill
of materials.com/pf/LM/LM2798.

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For more information about the LM5035, including how to order samples and
evaluation boards, please visit http://www.91 billion for fiscal 2005,
which ended May 29 , 2005. The unique dynamic-gain architecture provides efficiency up to 90 percent,
which is comparable to traditional buck regulator solutions that require
external inductors. "National's new DC-DC converters maximize performance and
minimize the solution footprint to offer unparalleled portable power
solutions .2 V, 1.10.

epe gurion

More information about National's power management products
is available at http://power .7 V to 5.6 V.com/cgi-bin/WebenchTemplate?base_pn=LM2788 . Each is packaged in a small MSOP-10.7
percent in 2003 over the previous year, compared to 17.html ,
http://www.

switched switchmode

3 percent in 2004 over the previous year, compared to 24 percent growth for
the industry. The device utilizes multiple fractional voltage -gain steps
to maximize power efficiency over the entire input voltage and output current
ranges .

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National Semiconductor Expands Portable Power Portfolio With New High Efficiency Step-Down DC-DC Converters Without Inductors

8 V and 2.national.com.

rectifier designline

5 V.national.

This category is for sites that provide useful information directly related to the design and analysis of power conversion circuits and topologies , applications of power electronics, control and regulation techniques, as well as active and passive power electronics components (IGBT, MOSFET, thyristors, diodes, transformers, inductors).

switching powersystems

Programmable control of the rectifying switches allows designers to
perfect their timing relationship to optimize overall power efficiency.com/pf/LM/LM2788.

smps infoweb

html . Additional company and product information is
available at http://www.national.
The LM2797 and LM2798, with the same features as the LM2788, also include
input and output voltage-monitoring characteristics.html ,
http://www.

topologies voltages

com. The LM2770 has a low -power sleep mode that limits the quiescent
current to 30 uA and significantly extends standby times .8 percent market share, according to iSuppli's 2004 voltage
regulator/reference survey.40,
the LM2788 is $1.
More information about the products is available at
http://www.

smps pspice

"With the
LM5035 , National has integrated core IP from our LM5100A gate driver and
LM5025 PWM controller on a single chip. The LM2788 is available in fixed output voltage options of 1.
The LM2788 is available for simulation on National Semiconductor's award
winning WEBENCH tool at
http://www.

switchmode epe

The LM5035, the newest member of National's high-voltage LM5000 family,
integrates a voltage-mode PWM controller with high-side and low-side 2A peak
gate drivers plus two programmable, secondary-side synchronous rectifier FET
drivers. National's power management revenue grew
37.national.national . The
LM2797 and LM2798 feature input and output voltage monitoring that prevents
unexpected power loss and instability issues during operation. The LM2797 has a faster turn-on time of
100 us. National 's innovative power
management products include best-in-class linear regulators; power monitoring ,
control and reference ICs; and switching converters, such as high-voltage ICs
for DC/DC conversion , switched capacitor converters, lighting management ICs
and inductive switching converters.com/pf /LM/LM2797.national.