LED Driver offers 1 A current sink.
September 3, 2008 -
Available in 5-lead, TO-263 package, Model CAT4101 constant-current, low dropout LED driver is linear-based and does not require an inductor. LED current is set via external resistor connected to RSET pin, which is compatible with voltages up to 25 V, enabling unit to drive strings of up to 10 LEDs, adjustable to 1 A. Device offers high-resolution PWM dimming, instant-on PWM control mode, and thermal shutdown protection in the event of any over-temperature fault condition.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
Catalyst Semiconductor
1250 Borregas Ave.
Sunnyvale, CA, 94089
USA
1 Amp Constant-Current, Low Dropout Driver (LDD(TM)) from Catalyst Semiconductor Targets High-Power LED Lighting Applications
SANTA CLARA, Calif., August 27, 2008 - Catalyst Semiconductor, Inc. (NASDAQ:CATS) a supplier of analog, mixed-signal and non-volatile memory semiconductors, has expanded its line of constant-current, LDD(TM) (low dropout driver) products to include a new, simple-to-use, high-power device for architectural, landscape, automotive and general LED lighting products. The CAT4101 (http://www.catsemi.com/products/CAT4101.asp) 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, eliminating noise, minimizing component count and simplifying design. The LED current is set via an external resistor connected to the RSET 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 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
o 1A current sink with high accuracy
o Up to 25V operation on LED pin
o Low dropout voltage drive 500mV/1A
o LED current set by external resistor
o High resolution PWM dimming via EN/PWM
o Thermal shutdown protection
o 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, Catalyst Semiconductor designs and markets analog, mixed-signal and non-volatile memory products, including Digitally Programmable Potentiometers (DPP(TM)), white and color LED drivers, DC/DC converters, LDO regulators, voltage supervisors, bus expanders, serial and parallel EEPROMs, Flash and NVRAM. 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 modules, cellular telephones, navigation systems, set-top boxes and Internet routers.
Company Name: Catalyst Semiconductor, Inc.
Address 1: 2975 Stender Way
City: Santa Clara
State: CA
Zip: 95054
Country: USA
Phone: 408-542-1080
URL: www.catsemi.com
Contact Name: Sherry Hill
Title: Director Marketing Communications
E-mail: sherry.hill@catsemi.com
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