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1 Amp Constant-Current, Low Dropout Driver (LDD(TM)) From Catalyst Semiconductor Targets High-Power LED Lighting Applications.


CAT4101 Provides Simple Solution for Automotive, Architectural, Landscape and General LED Lighting

SANTA CLARA, Calif. -- Catalyst Semiconductor, Inc. (NASDAQ NASDAQ
 in full National Association of Securities Dealers Automated Quotations

U.S. market for over-the-counter securities. Established in 1971 by the National Association of Securities Dealers (NASD), NASDAQ is an automated quotation system that reports on
:CATS) a supplier of analog, mixed-signal and non-volatile memory semiconductors, has expanded its line of constant-current, LDD LDD Lotus Developer Domain
LDD Lijst Dedecker (Political party, Vlaanderen, Belgium)
LDD Living Dead Dolls
LDD LEGO Digital Designer
LDD Land Development Desktop (Autodesk AutoCAD)
LDD Laser Diode Driver
[TM] (low dropout (1) On magnetic media, a bit that has lost its strength due to a surface defect or recording malfunction. If the bit is in an audio or video file, it might be detected by the error correction circuitry and either corrected or not, but if not, it is often not noticed by the human  driver) products to include a new, simple-to-use, high-power device for architectural, landscape, automotive and general LED lighting products. The CAT4101 is a linear-based, constant-current LED driver, which drives long strings of LEDs and provides a high-current solution for a wide range LED applications.

Since it is a linear-based LED driver, the CAT4101 does not require an inductor inductor, electric device consisting of one or more turns of wire and typically having two terminals. An inductor is usually connected into a circuit in order to raise the inductance to a desired value. , eliminating noise, minimizing component count and simplifying design. The LED current is set via an external resistor connected to the RSET RSET Receive Signal Element Timing  pin. The LED pin is compatible with high-voltages up to 25V. This enables the CAT4101 to drive long strings of up to 10 LEDs, adjustable to 1 amp. The device offers high-speed, high-resolution PWM (Pulse Width Modulation) A modulation technique that generates variable-width pulses to represent the amplitude of an analog input signal. Like its fixed-width pulse density modulation (PDM) cousin, the output switching transistor is on more of the time for a  dimming, an "instant-on" PWM control mode and thermal shutdown protection in the event of an over-temperature fault condition. The CAT4101 is available in a 5-lead, TO-263 package to provide exceptional thermal dissipation.

Product Features

* 1A current sink with high accuracy

* Up to 25V operation on LED pin

* Low dropout voltage drive 500mV/1A

* LED current set by external resistor

* High resolution PWM dimming via EN/PWM

* Thermal shutdown protection

* Packaging: 5-lead TO-263

Price and Availability

The CAT4101 constant-current, LDD is priced at $0.98 each in 10,000 piece quantities. CAT4101 samples and evaluation kits CAT4101 are available now. Projected lead-time for production quantities is currently 6 to 8 weeks ARO.

About Catalyst Semiconductor

Headquartered in Santa Clara, California Santa Clara, California (IPA: /ˌsæntəˈklærə/) , founded in 1777 and incorporated in 1852, is a city in Santa Clara County, in the U.S. state of California. , Catalyst Semiconductor designs and markets analog, mixed-signal and non-volatile memory products, including Digitally Programmable Potentiometers (DPP DPP - Dining Philosophers Problem [TM]), white and color LED drivers, DC/DC converters, LDO LDO Low-Dropout (Used With Regulators)
LDO Limited Duty Officer
LDO Light Diesel Oil (petroleum)
LDO Local Development Officer (Nepal)
LDO Land Development Ordinance
 regulators, voltage supervisors, bus expanders, serial and parallel EEPROMs, Flash and NVRAM (Non-Volatile RAM) May refer to dynamic RAM (DRAM) and static RAM (SRAM) chips that are backed up by a battery or to non-volatile chips such as flash memory. See non-volatile memory, dynamic RAM, static RAM and solid state disk. . Many of Catalyst's products incorporate the Company's Quantum Charge Programmable[TM] technology, to deliver Adaptive Analog[TM] products, which offer a new level of customer flexibility, lower power and smaller die size. Catalyst products are used in telecommunications, computer, automotive, industrial and consumer markets. Typical applications include LCD displays, automotive lighting, optical networks, printers, modems, wireless LANs, network cards, DIMM (Dual In-Line Memory Module) A printed circuit board that holds memory chips and plugs into a DIMM socket on the motherboard. See memory module.

DIMM - Dual In-Line Memory Module
 modules, cellular telephones, navigation systems, set-top boxes and Internet routers. www.catsemi.com.

Forward Looking Statements

There may be forward-looking statements in this press release, which are subject to risks and uncertainties, including statements about Catalyst Semiconductor's Low Dropout Driver (LDD[TM]) LED driver products lead times and availability. A number of factors can affect product availability and lead times. These include, but are not limited to issues regarding the supply of materials or other interruptions in our manufacturing processes, or those of our foundries and other vendors; the cyclical nature of the semiconductor industry; and variable market demand. More information about factors that could cause actual results to differ materially from those in the forward-looking statements is contained under the heading "Certain Factors That May Affect the Company's Future Results of Operations" listed from time-to-time in reports Catalyst files with the Securities and Exchange Commission including, but not limited to, Catalyst's Annual Report filed on Form 10-K and Quarterly Reports filed on Form 10-Q. Catalyst disclaims any obligation to update information contained in any forward-looking statement.

Editor Notes:

1) Trademark notices: Adaptive Analog[TM], DPP[TM], LDD[TM] and Quantum Charge Programmable[TM] are trademarks of Catalyst Semiconductor, Inc.
COPYRIGHT 2008 Business Wire
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Copyright 2008 Gale, Cengage Learning. All rights reserved.

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Publication:Business Wire
Date:Aug 27, 2008
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